The project is financially supported by grants from the Japan Society for the Promotion of Sience (No. 24700942 to Y. Tsujino) (April 2012 - March 2015)(No. 16K16346 to Y. Tsujino) (April 2016 - March 2019)

Type specimens of Cretaceous ammonoid in Japan

Type specimens are fundamental resources for researchers. However, there is no easy way for researchers to make a search of specimens. Recently, many institutes publicized databases of digital images of paleontological specimens on the Internet. In particular, the 3D digital models are useful, because they give us sterical recognition of a specimen.

Cretaceous marine strata which have yielded abundant ammonoids are widely distributed throughout Japan. Over 300 type specimens (Holotype, Lectotype and Neotype) of Cretaceous ammonoids are held in Japan.

It is our aim to share on the Internat 3D digital models of the type specimens of Cretaceous ammonoids.

What's New

2019/3/19 Update 21 photo data.

2018/3/30 Update 144 photo data.

2017/3/30 Web page Renewal.

Database

Database search:

Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D

Nakagawa Museum of Natural History
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Parahoplites colossus	Matsumoto, 1984	Rep. Geol. Surv. Hokkaido, No. 55, p. 21, pl. 1, figs. 1 - 3; pl. 2, figs. 1 - 3; text - fig. 1A, B	Holotype: Geological Survey of Hokkaido Collection, No. 187	A cliff on the left side of the lower course of the Pankenai creek, a tributary of the Teshio River, near Utanai, Nakagawa Town, northern Hokkaido (142^05'30" E, 44^51'00" N)	Member Kj2, Kamiji Formation, Lower Yezo Group	Middle Upper Aptian, Lower Cretaceous

Mikasa City Museum
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Gabbioceras mikasaense	Shigeta, 1996	Bull. Nat. Sci. Mus., Tokyo, Ser. C, Vol. 22, Nos. 1 - 2, p. 4, fig. 2 - 4a,b	Holotype: MCM. A397	Loc. 1 (NSM PCL 4 - 14 - 14), a roadside cliff, Ikushumbets area, Misaka City, Sorachi Province, central Hokkaido (141^58'32" E, 43^14'02" N)	Member 2b, Misaka Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Horotateceras tatsuyai	Hayakawa, 1998	Bull. Mikasa City Mus., Nat. Sci., No. 2, p. 42, fig. 1A, B	Holotype: MCM - A612	Horotate River, a tributary of the Kotanbetsu River, Kotanbetsu area, Tomamae County, Rumoi Province, northwestern Hokkaido (ca. 141^59'E, 44^08'N)	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Eogunnarites tanakai	Hayakawa, 1997	Bull. Mikasa City Mus., No. 1, p. 20. fig. 1.	Holotype: MCM - A611	Loc. no. 558, Shumarinai area, Uryu County, northwestern Hokkaido	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Dihamites obiraensis	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 355, pl. 59, fig. 2	Holotype: Ob 1006, K. Muramoto' s private collection	Aka - no - sawa Creek, a northern tributary of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (ca. 141^58'E, 44^44'08" N)	Unit Uh or higher, Upper Yezo Group	Upper Santonian, Upper Cretaceous
Douvilleiceras compressum
Douvilleiceras kawashitai
Eupachydiscus keramasatoshii	Matsumoto, 1990	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 160, p. 624, figs. 3A - C, 4	Holotype: No. 482, M. Kera's private collection	Loc. Y 5512, Masago - zawa Creek, a tributary of the Shuparo River, Oyubari area, central Hokkaido (ca. 142^07'E, 43^10'N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Neomphaloceras pseudophalum
Nowakites mikasaensis	Matsumoto, 1979	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 113, p. 39, pl. 6, fig. 1	Holotype: M - 1709, T. Muramoto' s private collection	A small branch A of the Banno - sawa Creek, a tributary of the River Ikushumbets, Mikasa City, Sorachi Province, central Hokkaido (ca. 141^59'E, 43^13'N)	Upper Yezo Group	Lower Coniacian, Upper Cretaceous
Peroniceras yubarense	Matsumoto, Muramoto and Hirano, 1981	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 121, p. 55, pl. 6, fig. 2; pl. 7, fig. 2; text - fig. 2	Holotype: Yb5152, K. Muramoto's private collection	Main stream of the Shiyubari River, at a point close to loc. Y102 of Matsumoto (1942), Oyubari area, Sorachi Province, central Hokkaido (142^06'35" E, 43^09'03" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Shuparoceras abei	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 21, No. 1, p. 113, pl. 13, fig. 1	Holotype: HCS. No. 57, Geological Survey, Hokkaido	Colliery & Steamship Co., Yubari City (donated to the Mkikasa City Museum, MCM.A823) River gravel in the Shiyubari (= Yubari) River, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Tanabeceras pombetsense

Hokkaido University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Barroisiceras minimum	Yabe (MS), Hayasaka and Fukada, 1951	Jour. Fac. Sci., Hokkaido Univ., ser. 4, Vol. 7, No. 4, p. 325, pl. 1, figs. 1 - 4	Holotype: Specimen housed in Departemnt of Geology and Mineralogy, Hokkaido University (register number undescribed)	Loc. Ik 1103, cliff along forestry railway in Ikushumbets Valley, about 200m below from the confluence with the Ban - no - sawa Creek, Mikasa City, Sorachi Province, central Hokkaido (142^00'33" E, 43^13'53" N)	Unit IIIa, Upper Yezo Group	Upper Turonian, Upper Cretaceous	(= Reesidites minimus (Hayasaka and Fukada, 1953)) / Remarks: The generic position of this species was transferred to Reesidites by Wright and Matsumoto (1954, p. 130). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8.
Grandidiericeras nagaoi	Matsumoto and Saito, 1987	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 145, p. 2, figs. 1A - C & 3 - 1a, b, c	Holotype: GMH. No. 12008	Loc. IK 966d, a river - side outcrop in the Ikushumbets River, now submerged under the Katsurazawa Lake, Mikasa City, Sorachi Province, central Hokkaido (142^00'40" E, 43^14'11" N)	Green sandstone (Member GS2), Upper Yezo Group	Coniacian, Upper Cretaceous
Kossmaticeras theobaldianum paucicostatum	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 147, pl. 9, fig. 2	Holotype: Hokkaido University specimen (registered number unknown)	Loc. no. 62004, Bannosawa Creek, a tributary of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 141^59'E, 43^13'N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Mantelliceras (?) nagaoi	Matsumoto, Saito and Fukada, 1957	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 6, No. 1, p. 6, pl. 12, fig. 1; pl. 13, fig. 2	Holotype: GH. No. 12007	Abeshinai, Nakagawa Town, Teshio Province, northern Hokkaido	Middle Yezo Group	Upper Cretaceous
Pachydiscus (Neodesmoceras) japonicum	(Saito MS.)Matsumoto, 1954	Jap. Jour. Geol. Geogr., Vol. 24, p. 89, pl. 9, fig. 1a - c	Holotype: Specimen housed in the Department of Geology and Mineralogy, Hokkaido University (registered number undescribed)	Penkemobetsu River, Shimo - hobetsu, Iburi Province, southern central Hokkaido (ca. 142^10'E, 42^47'N)	Hakobuchi Group ?	Senonian, Upper Cretaceous
Prionocyclus aberrans	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 16, No. 1, p. 25, pl. 5, fig. 1; text - fig. 8	Holotype: GH. 12006 (Hokkaido Univ. Coll. 12006)	A locality close to an abandoned colliery called "Ponbetsu Mansei - shako", Pombets, Mikasa City, Sorachi province, central Hokkaido (ca. 141^59'E, 43^16'N)	Upper Yezo Group	Upper Turonian, Upper Cretaceous

Hobetsu Museum
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Anagaudryceras compresssum
Didymoceras hidakense
Gaudryceras hobetsense
Phylloptychoceras horitai

Akita University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Pseudokossmaticeras yagii	Matsumoto, 1990	Bull. Hobetsu Mus., No. 6, p. 5, pl. 1A - C; text - fig. 1	Holotype: HCS. No.13, Hokkaido Colliery and Steamship Company Collection	A nodule loose on the upper course of the Kuriki River, 4 km northeast of Noborikawa, Noborikawa area, Iburi Province, southern central Hokkaido	Upper Yezo Group or Hakobuchi Group	Upper Campanian or Lower Maastrichitian, Upper Cretaceous

Tohoku University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Acanthoplites subcornuerianus	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 32, pl. 1, figs. 8, 9	Holotype: IGPS 36512	Hideshima, Sakiyama Villege, Shimohei County, Iwate Prefecture, Pacific coast of northeast Honshu (ca. 141^ 59' 25" E, 39^40'00" N)	Hiraiga Formation, Miyako Group	Aptian, Lower Cretaceous
Ancyloceras choshiense	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 37, pl. 3, figs. 22 - 24	Holotype: IGPS 36832	A little north of Inubo Cape, , Choshi Peninsula, Chiba Prefecture, central Honshu	Choshi Group	Aptian, Lower Cretaceous
Ancyloceras giganteum	Yabe and Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 37, pl. 4, fig. 7	Holotype: IGPS 35297	A little north of Komo, Hanoura Town, Naka County, Tokushima Prefecture, Shikoku (134^35'49" E, 33^56'41" N)	Mochii Formation	Lower Aptian, Lower Cretaceous
Beudanticeras shikokuense	Yabe and Shimizu, 1927	Sci. Rep., Tohoku Imp. Univ., 2nd Ser., Geol., Vol. 11, No. 1, p. 69, pl. 3(1), fig. 10	Holotype: IGPS. 35154	Sakamoto, Tanano Villege, Katsura County, Tokoshima Prefecture, east Shikoku (ca. 134^27'E, 33^56'N)	Monobegawa Series (Fujikawa Formation)	Upper Albian, Lower Cretaceous	(= Desmoceras (Pseudouhligella) dawsoni shikokuense (Yabe and Shimizu, 1927)) / Remarks: The generic position of this subspecies was transferred to Desmoceras (Pseudouhligella) by Nakai and Matsumoto (1968, p. 9). / Reference: Nakai, I. and Matsumoto, T., 1968. Jour. Sci. Hiroshima Univ., Ser. C, Vol. 6, No. 1, 1 - 15, pls. 1 - 3.
Colombiceras satowi	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 34, pl. 3, figs. 5 - 10	Holotype: IGPS 35387	Near Inubo Cape, Choshi Peninsula, Chiba Prefecture, central Honshu (ca. 140^52'E, 35^42'N)	Choshi Group	Aptian, Lower Cretaceous
Crioceras ishiwarai	Yabe and Shimizu, 1925	Jap. Jour. Geol. Geogr., Vol. 4, Nos. 3 - 4, p. 85, pl. 5; text - figs. 1, 2	Holotype: unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Shiraito - hama, Oshima Island, Kesennuma City, Miyagi Prefecture, Pacific coast of northeast Honshu (ca. 141^37'E, 38^52'N)	Oshima Formation	Hauterivian - Barremian, Lower Cretaceous
Crioceras yagii	Yabe and Shimizu, 1926	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 72(40), pl. 15 (4), figs. 16 - 19	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Ishido, Minami - Saku County, Nagano Prefecture, central Honshu (ca. 138^38'E, 36^07'N)	Ishido Group (= Ishido Formation)	Barremian, Lower Cretaceous
Desmoceras (?) pseudodifficile	Yabe and Shimizu, 1926	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 70(38), pl. 15 (4), fig. 11	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Ishido, Minami - Saku County, Nagano Prefecture, central Honshu	Ishido Group (= Ishido Formation)	Barremian, Lower Cretaceous
Douvilleiceras nodosocostatiforme	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd ser., Vol. 15, No. 1, p. 35, pl. 1, figs. 6, 7	Holotype: IGPS 35152	Loc. Hn. 4151, Matsushima, Omoto village, Iwate Prefecture, northeast Honshu (141^58'57" E, 39^49'51" N)	Hiraiga Formation, Miyako Group	Uppermost Albian, Lower Cretaceous	(=Diadochoceras nodosocostatiforme (Shimizu, 1931)) / Remarks: The generic position of this species was transferred to Diadochoceras by Obata (1975, p. 2). / Reference: Obata, I., 1975. Bull. Natn. Sci. Mus., Ser. C, Vol. 1, No. 1, 1 - 10. pls. 1 - 3.
Eubostrychoceras indopacificum	Matsumoto, 1967	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 18, No. 2, p. 333, pl. 18, fig. 1	Holotype: IGPS 35159	Sakurazawa Creek, Oriki, Futaba County, Fukushima Prefecture, northeastern Honshu (ca. 140^58'E, 37^12'N)	Lower Futaba Formation	Coniacian, Upper Cretaceous
Gauthiericeras rarum	Yabe, 1925 (Yabe MS. Nom.)	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 7, No. 4, p. 135 (11), pl. 33 (4), figs. 11 - 15	Holotype: Tohoku Univ. specimen (registered number undescribed)	Kikume - zawa Creek, near the junction with the Ikushumbets River, Mikasa City, Sorachi province, central Hokkaido (now under the Katsurazawa Lake) (142^00'49" E, 43^13'29" N)	Upper Ammonite Beds (Upper Yezo Group)	Senonian, Upper Cretaceous
Inflaticeras imaii	Yabe and Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 39, pl. 4, fig. 8	Holotype: IGPS 36858	Ponhorokabets Creek, Yubari City, Sorachi Province, central Hokkaido (ca. 141^57'40" E, 43^04'20" N)	Lower Ammonites Beds (= Middle Yezo Group)	Upper Albian, Lower Cretaceous	(= Mortoniceras (Cantabrigites) imaii (Yabe and Shimizu, 1931)) / Remarks: The generic position of this species was transferred to Mortoniceras (Cantabrigites) by Matsumoto and Harada (1964). / Reference: Matsumoto, T. and Harada, M., 1964. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 15, No. 1, 79 - 115, pls. 9 - 11.
Leptoceras asiaticum	Yabe and Shimizu, 1926	Sci. Rep. Tohoku Imp. Univ., Vol. 9, No. 2, p. 73(41), pl. 15(4), fig. 21	Holotype: IGPS 22849	Loc. SA - 621, Ishido, Sanchu area, central Honshu (ca. 138^36'E, 36^07'N)	Lower part of Ishido Formation	Lower Barremian, Lower Cretaceous	(= Karsteniceras asiaticum (Yabe and Shimizu, 1926) / Remarks: The generic position of this species was transmitted to Karsteniceras by Matsukawa, 1988, p. 399). / Reference: Matsukawa, M., 1988. Trans. Proc. Palaeont. Soc. Jap., N. S., No. 149, 396 - 416, figs. 1 - 11.
Mortoniceras nomii	Yabe and Shimizu, 1925	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 7, No. 4, p. 131, pl. 32 (3), figs. 1 - 3	Holotype: Tohoku University specimen (missing); its plaster cast, IGPS. 22402	An outcrop at the confluence of the Penkemoyuparo Creek with the Shiyuparo (Yubari) River, Oyubari area, Sorachi Province, central Hokkaido (ca. 142^06'41" E, 43^01'29" N)	Upper Yezo Group	Santonian, Upper Cretaceous	(= Protexanites nomii (Yabe and Shimizu, 1925)) / Remarks: The generic position of this species was transferred to Protexanites by Matsumoto (1965, p. 38). / References: Matsumoto, T., 1965. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 16, No. 1, 1 - 80, pls. 1 - 18.
Mortoniceras orientale	Yabe and Shimizu, 1925	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 7, no. 4, p. 129 (5), pl. 31 (2), figs. 4, 5; pl. 33(4), fig. 16	Holotype: IGPS. 7329	The Shiyuparo (Shiyubari) River, Oyubari area or Kikume - zawa Creek, near the juction with the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous	(= Paratexanites orientalis (Yabe and Shimizu, 1925)) / Remarks: The generic position of this species was transferred to Paratexanites by Matsumoto (1965, p. 41). / References: Matsumoto, T., 1965. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 16, No. 1, 1 - 80, pls. 1 - 18.
Mortoniceras sanushibense [recte]	Yabe and Shimizu, 1925	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 7, No. 4, p. 132(8), pl. 33(4), figs. 3 - 5	Holotype: IGPS. 8039	Upper reaches of the Sanushibe Creek, a tributary of the Hobetsu River, Hobetsu Town, Iburi Province, southern central Hokkaido (ca. 142^07'E, 42^52'N)	Upper Yezo Group	Senonian, Upper Cretaceous	(=Texanites (Plesiotexanites) sanushibensis (Yabe and Shimizu, 1925)) / Remarks: The generic position of this species was transferred to Teaxnites (Plesiotexanites) by Matsumoto (1970, p. 292). / Reference: Matsumoto, T., 1970. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 20, No. 2, 225 - 304, pls. 30 - 47.
Neophylloceras subramosum	Shimizu, 1934	Ammonites in S. Shimizu and T. Obata, Ammonites: Iwanami's lecture series of Geology and Paleontology, Tokyo, p. 62, fig. 34A - C	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Wakkawenbets Creek, a tributary of the Abeshinai River, Saku - Abeshinai area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^03'E, 44^38'N)	Upper Yezo Group	Senonian, Upper Cretaceous	(= Hypophylloceras (Neophylloceras) subramosum (Shimizu, 1934)) / Remarks: The generic position of this species was transferred to Hypophylloceras (Neophylloceras) by Wright (1996, p. 1). / Reference: Wright, C. W., 1996. Treatise on Invertebrate Paleontology, Part L, Mollusca 4, Revised, Vol. 4, Cretaceous Ammonoidea, 362pp+ i - xx, Geol. Soc. Amer. & Univ. Kansas.
Parahoplites yaegashii	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 30, pl. 2, figs. 1 - 3; pl. 3, figs. 1, 2	Holotype: IGPS 36856	Komo, Hanoura Town, Naka County, Tokushima Prefecture, Shikoku	Mochii Formation	Aptian, Lower Cretaceous
Peroniceras ninakawai	Yabe and Shimizu, 1925	Sci. Rep. Tohoku Imp. Univ., Ser. 2, Vol. 7, p. 137[13], pl. 31 [2], figs. 8, 9; pl. 33[4], fig. 17	Holotype: IGPS 8026	Yanagi - no - sawa Creek, a branch of the Sanushibe River, Iburi Province, south central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous	(= Cobbanoceras ninakawai (Yabe and Shimizu, 1925)) / Remarks: The genericposition of this species was transferred to Cobannoceras by Matsumoto (1965, p. 223). / Reference: Matsumoto, T., 1965. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 16, No. 3, 209 - 243, pls. 36 - 43.
Polyaspidoceras shimizui	Matsumoto, 1978	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 24, No. 1, p. 18, pl. 6, fig. 1	Holotype: IGPS 54404	Miho Creek, a tributary of the Naibuchi River, Naibuchi (= Naiba) district, south Saghalin, Russia (ca. 142^36'E, 47^19'N)	Miho Group ?	Turonian, Upper Cretaceous
Protexanites (Protexanites) bontanti shimizui	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D, Geol., Vol. 20, No. 2, pl. 31(35), fig. 2a - d; text - fig. 6a, b	Holotype: IGPS. 36962	Namikawa, Toyohara County, south Sakhalin, Russia	Miho Group?	Senonian, Upper Cretaceous
Pseudobarroisiceras nagaoi	Shimizu, 1932	Jap. Jour. Geol. Geogr., Vol. 10, p. 1, pl. 1, fig. 1 - 2, 4 - 8	Holotype: IGPS 49432 (= now registered as IGPS. 36853)	Lower course of the Wakkawenbetsu Creek, a tributary of the Abeshinai River, Abeshina - Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^03'E, 44^38'N)	Middle Abeshinai Group (= Upper Yezo Group)	Senonian, Upper Cretaceous
Pseudohaploceras nipponicum	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 27, pl. 1, figs. 17 - 19	Holotype: IGCP. 36514	Matsushima, Taro - mura, Shimohei - gun, Iwate Prefecture, Pacific Coast of northern Honshu (141^58'57" E, 39^49'51" N)	Hiraiga Formation, Miyako Group	Upper Aptian, Lower Cretaceous
Pseudosaynella otsukai	Yabe and Shimizu, 1926	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 68(36), pl. 15(4), figs. 5 - 8	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Kawarazawa, Gumma Prefecture, central Honshu	Kawarazawa Group (= Kawarazawa Formation)	Aptian, Lower Cretaceous
Pseudothurmannia hanouraensis	Yabe and Shimizu (MS. Nom.), 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 29, pl. 1, figs. 20 - 24, pl. 3, fig. 11	Holotype: IGPS 35304 (pl. 1, fig. 20) / Paratypes: IGPS 36516 (pl. 1, fig. 21), IGPS 36860 (pl. 1, figs. 23 - 25; pl. 3, fig. 1)	Ushiotoshiyama, Hanoura Town, Naka County, Tokushima Prefecture, Shikoku	Hanoura Formation	Neocomian, Lower Cretaceous
Pulchellia ishidoensis	Yabe and Shimizu, 1926	Sci. Rep., Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 74(42), pl. 15 (4), figs. 22 - 24	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Ishido, Minami - Saku County, Nagano Prefecture, central Honshu (ca. 138^38'E, 36^07'N)	Ishido Group (= Ishido Formation)	Barremian, Lower Cretaceous
Puzosia (?) yabei	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 24	Holotype: IGPS. 36506	Matsushima, Taro Villege, Shimohei County, Iwate Prefecture, Pacific coast of northeast Honshu (141^58'57" E, 39^49'51" N)	Hiraiga Formation, Miyako Group	Aptian, Lower Cretaceous
Reymentites hataii	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 3, p. 240, pl. 42 [25], fig. 3; text - figs. 19 [59] - 20 [60]	Holotype: IGPS 54746	The Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Possibly Upper Uezo Group	Possibly Senonian (Coniacian and Santonian), Upper Cretaceous
Saynella matsushimaensis	Shimizu, 1931	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 25, pl. 1, figs. 10 - 13; pl. 3, fig. 26	Holotype: IGPS 36507	Matsushima, Taro Villege, Shimohei County, Iwate Prefecture, Pacific coast of northeast Honshu (141^58'57" E, 39^49'51" N)	Hiraiga Formation, Miyako Group	Aptian, Lower Cretaceous
Simbirskites kochibei	Yabe and Shimizu, 1926	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 69(37), pl. 15 (4), figs. 9, 10	Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University	Kawarazawa, Gumma Prefecture, central Honshu	Kawarazawa Group (= Kawarazawa Formation)	Aptian, Lower Cretaceous
Mortoniceras fukazawai	Yabe and Shimizu, 1925	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 7, no. 4, p. 130, pl. 30, fig. 1; pl. 31, figs. 1 - 4 & 6; pl. 33, figs. 1, 2	Lectotype: IGPS. 8045 (pl. 30, fig. 1; pl. 31, fig. 6; pl. 33, figs. 1, 2) / Paralectotype: IGPS. ? (pl. 31, figs. 1 - 4)	A locality between Oda and Akase, Uto City, northern side of the Uto Peninsula, Kumamoto Prefecture, west Kyushu (ca. 130^30'E, 32^39'N)	Member I - d, Himenoura Group	Upper Santonian - Lower Campanian, Upper Cretaceous	(= Protexanites fukazawai (Yabe and Shimizu, 1925)) / Remarks: The generic position of this species was transferred to Protexanites by Matsumoto (1965, p. 38). Lectotype was designated by Matsumoto and Ueda (1962, p. 174). / References: Matsumoto, T., 1965. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 16, No. 1, 1 - 80, pls. 1 - 18.Matsumoto, T. and Ueda, Y., 1962. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 12, No. 2, 162 - 174, pls. 22 - 27.
Gauthiericeras shibatai
Prionotropis teshioensis

National Museum of Nature and Science
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Ainoceras paucicostatum	Matsumoto and Kanie, 1967	Mem. Fac. Sci., Kyushu Univ., ser. D (Geol.), Vol. 18, No. 2, p. 356, pl. 21, fig. 5	Holotype: GY 16 (transferred to the National Science Museum, Tokyo, NSM)	Loc. U118 - 3, Nishihorobetsu, Urakawa rea, Hidaka Province, southern central Hokkaido (142^48'41" E, 42^10'47" N)	Unit U2b of Kanie = Ur3b of Matsumoto, Upper Yezo Group	Approximately Lower Campanian, Upper Cretaceous	Remarks: This specimen is now housed in the National Science Museum, Tokyo.
Eodouvilleiceras matsumotoi	Obata, 1969	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 76, p. 166, pl. 18, fig. 5a - e; text - fig. 1	Holotype: NSM 7272 (pl. 18, fig. 5a - e; text - fig. 1) / Paratypes: NSM 7269, NSM 7281 (list only)	Loc. Hn. 4201, Tairajima, Omoto village, Iwate Prefecture, northeastern Honshu (141^59'00" E, 39^49'54" N)	Hiraiga Formation, Miyako Group	Upper Aptian, Lower Cretaceous
Eogaudryceras antiquum
Epipuzosia maya	Matsumoto, 1988	Palaeont. Soc. Japan, Spec. Paps., No. 30, p. 142, fig. 66	Holotype: YKC. 570915, Y. Kawashita' s private collection	Loc. R 8024, Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Unit Mj, Middle Yezo Group	Lower or Middle Turonian, Upper Cretaceous
Gabbioceras yezoense	Shigeta, 1996	Bull. Nat. Sci. Mus., Tokyo, Ser. C, Vol. 22, Nos. 1 - 2, p. 2, figs. 1 - 1, 2 - 2a, b	Holotype: NSM. PM8300	Loc. 4 (NSM PCL 3 - 35 - 4), a concretion in the Shumarinai - gawa River, Horokanai Town, northwestern Hokkaido (142^05'46" E, 44^16'49" N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Gaudryceras makarovense
Heteroptychoceras obatai	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 357, pl. 58, fig. 4	Holotype: NSM. PM7243	Loc. Y103p, Isojiro - no - sawa Creek, Oyubari area, Sorachi Province, central Hokkaido (142^07'47" E, 43^05'48" N)	Upper Yezo Group	Santonian, Upper Cretaceous
Holcodiscus ojii
Hourcquia kawashitai	Matsumoto and Toshimitsu, 1984	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 25. No. 2, p. 233, pl. 32, figs. 1, 2; text - figs. 2A, B, 3A - D	Holotype: YKC. 57 - 6 - 20 - E, Y. Kawashita's private collection (pl. 32, fig. 1; text - fig. 2A, B) / Paratypes: GK. H5990 (pl. 32, fig. 2a - c), YKC. 57 - 9 - 10 - D, Y. Kawashita' s private collection (pl. 32, fig. 2a - c)	Floated or fallen nodule in the Karasemi - zawa Creek, Haboro area, northwestern Hokkaido (ca. 142^02'E, 44^18'N)	Lower member of the Shirochi Formation, Middle Yezo Group	Upper Turonian, Upper Cretaceous
Hyperpuzosia tamon	Matsumoto, 1988	Palaeont. Soc. Jap., Spec. Paps., No. 30, p. 147, figs. 69 - 74, 77	Holotype: YKC. 480628 - 1, Y. Kawashita' s private collection (figs. 69, 70A) / Paratypes: YKC. 480628 - 2(figs. 70B - C, 71), YKC. 501005 (fig. 72), YKC. 490927(fig. 74), YKC. 560820(fig. 77), Y. Kawashita' s private collection; NSM. MM9597 (fig. 73)	Oku - futamata - zawa Creek, a tributary of the Pombets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido	Unit Ma, Lower Yezo Group	Probably Lower Albian, Lower Cretaceous
Hyphantoceras (?) heteromorphum	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, no. 3, p. 314, pl. 47, fig. 2.	Holotype: NSM. PM7244	Loc. Ik - M1 - p5, Kami - ichi - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^02'E, 43^15'N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Hyphantoceras transitorium	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, no. 3, p. 313, pl. 44, fig. 5.	Holotype: NSM. PM7261	Inari - zawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^02'20" E, 43^13'03" N)	Upper Yezo Group	Santonian, Upper Cretaceous
Hypophylloceras (Neophylloceras) victriense
Karsteniceras obatai	Matsukawa, 1987	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 148, p. 349, fig. 3 - 3	Holotype: NSM. PM9589	Loc. 7309, Isejigaura, Choshi City, Chiba Prefecture, central Honshu (140^52'15" E, 35^43'26" N)	Kimigahama Formation, Choshi Group	Lower Barremian, Lower Cretaceous
Kawashitaceras dentatum
Kawashitaceras obiraense	Matsumoto, 1984	Proc. Jap. Acad., Vol. 60, Ser. B, p.342, figs. 2 - 4	Holotype: Y. Kawashita' s private collection	Small branch stream of the Obirashibe River, about a point 500m southeast from the bridge called "Tengu - bashi" , Obira area, Rumoi Province, northwestern Hokkaido (ca. 141^55'E, 44^04'N)	Upper Yezo Group	Upper Turonian or Coniacian, Upper Cretaceous
Mammites costatus	Matsumoto and Kawashita, 1978	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 1, p. 5, pl. 1, fig. 1	Holotype: No. 51 - 8 - 20, Yoshitaro Kawashita's private collection	Shogako - no - sawa Creek, near Kashima, Oyubari area, central Hokkaido (ca. 142^07'38" E, 43^04'36" N)	Middle Yezo Group	Lower Turonian, Upper Cretaceous	(= Neomphaloceras costatum (Matsumoto and Kawashita, 1978)) / Remarks: The generic position of this species was transferred to Neomphaloceras by Matsumoto (1991, p. 920). / Reference: Matsumoto, T., 1991. Trans. Proc. Palaeont. Soc. Jap., N. S., No. 164, 910 - 927, figs. 1 - 8.
Mariella (Mariella) pacifica	Matsumoto, Inoma and Kawashita, 1999	Paleont. Res., Vol. 3, No. 2, p. 113, figs. 5 - 1 - - 7	Holotype: GS. G170 (Geological Collections, Faculty of Culture and Education, Saga University, Saga)(fig. 5 - - 1a - c) / Paratypes: GS. G171 (fig. 5 - 2), GS. G172 (fig. 5 - 3), GS. G173 (fig. 5 - 4), GS. G174 (fig. 5 - 5), GS. G175 (list only), GS. G176 (fig. 5 - 6), GS. G177 (fig. 5 - 6), GS. G178 (fig. 5 - 7), GS. G179 (list only), (Geological Collections, Faculty of Culture and Education, Saga University, Saga)	Loc. R905, Hotei - zawa Creek, a branch of the Shumarinai River, Soeushinai area, Uryu County, northwestern Hokkaido (found together with the holotype in the same nodule)	Unit My3, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Marshallites miyakoensis	Obata and Futakami, 1991	Palaeont. Soc. Jap., Spec. Paps., No. 33, p.124, pl. 31, figs. 1 - 5	Holotype: NSM. PM7692 (pl. 31, fig. 5) / Paratypes: NSM. PM 7693 (pl. 31, fig. 2), NSM. PM7694 (pl. 31, fig. 1), NSM. PM7694 (pl. 31, fig. 3), NSM. PM 7696 (pl. 31, fig. 4)	Hiraname coast, Miyako area, Iwate Prefecture, Pacific Coast of northern Honshu (141^56'49" E, 39^56'20" N)	Aketo Formation, Miyako Group	Lower Albian, Lower Cretaceous
Miyakoceras hayamii
Miyakoceras tanohatense	Obata, 1967	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 67, p. 131, pl. 11, figs. 3a - d, 4a - d; text - fig. 1	Holotype: NSM. 6119 (pl. 11, fig. 3a - d; text - fig. 1) / Paratype: NSM. 6120 (pl. 11, fig. 4a - d)	Loc. Hn. 1902, southern Haipe, Tanohata village, Iwate Prefecture, northeastern Honshu (141^56'41" E, 39^55'23" N)	Hiraiga Formation, Miyako Group	Upper Aptian, Lower Cretaceous
Muramotoceras laxum	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 23, No. 3, p. 337, pl. 45, figs. 1, 2; pl. 52, fig. 1; text - fig. 8	Holotype: NSM. PM7239 (pl. 52, fig. 1; text - fig. 8) / Paratypes: NSM. PM7209 (pl. 45, fig. 1), NSM. PM7210 (pl.45, fig. 2),	A rollen gravel in the Sato - no - sawa Creek at Ob - S - p1, a tributary of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (142^02'08" E, 44^02'27" N)	Saku Formation, Middle Yezo Group	Middle Turonian, Upper Cretaceous
Muramotoceras yezoense	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 23, No. 3, p. 335, pl. 53, figs. 1 - 4; pl. 54, fig. 1; text - figs. 6, 7	Holotype: NSM. PM7207 (pl. 53, fig. 1; text - fig. 6) / Paratypes: NSM. PM7208 (pl. 53, fig. 2), NSM. PM7211 (list only), NSM. PM7212 (list only), NSM. PM7213 (pl. 53, fig. 3), NSM. PM7214 (list only), NSM. PM7215 (pl. 54, fig. 1), NSM. PM7216 (list only), NSM. PM7217 (list only), NSM. PM7218 (list only), NSM. PM7219 (pl. 53, fig. 4; text - fig. 7), GK. H5652 (list only)	Rollen gravels in the Sato - no - sawa Creek at Ob - S - R1 - 2p, a tributary of the Obirashibe River, Tappu area, Obira Town,Rumoi Province, northwestern Hokkaido (142^02'08" E, 44^ 02' 27" N)	Saku Formation, Middle Yezo Group	Middle Turonian, Upper Cretaceous
Neocomitoides minimus
Neocrioceras (?) undulosum	Matsumto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 23, No. 3, p.343, pl. 47, fig.1	Holotype: NSM. PM7221	Loc. Ob - S - R1, eastern branch of the Sato - no - sawa Creek, a tributary of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (142^02'08" E, 44^02'27" N)	Middle Yezo Group	Middle? Turonian, Upper Cretaceous
Neosilesites hagiwarai
Obataceras manjiense
Prionocycloceras matsumotoi	Futakami, 1991	Jour. Kawamura Women' s Univ., Vol. 2, p. 258, pl. 1, figs. 1 - 7; text - fig. 1A, B(3)	Holotype: NSM. PM9568 (pl. 1, fig. 6; text - fig. 1A, B(3)) / Paratypes: NSM. PM9569 (pl. 1, fig. 7), NSM. PM9570 (pl. 1, fig. 4), NSM. PM9571 (pl. 1, fig. 8), NSM. PM9572 (pl. 1, fig. 3), NSM. PM9573 (pl. 1, fig. 5)	Loc. Ki504F, a rolled nodule in the Kamiichi - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi province, central Hokkaido (142^02'20" E, 43^15'49" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Prionocycloceras obatai	Futakami, 1991	Jour. Kawamura Women's Univ., Vol. 2, p. 261, pl. 2, fig. 3; text - fig. 2A, B	Holotype: NSM. PM9578	Loc. Ki607, the Roku - no - sawa Creek, a tributary of the Kamiichi - no - sawa River, Ikushumbets area, Mikasa City, Sorachi province, central Hokkaido (142^02'29" E, 43^16'29" N)	Lower part of the Upper Yezo Group	Lower to middle (?) Coniacian, Upper Cretaceous
Pseudaspideceras (Ampalabites) kawashitai	Matsumoto and Obata, 1982	Bull. Nat. Sci. Mus., Tokyo, Ser. C, Vol. 8, No. 2, p. 75, pl. 3, fig. 1a,b; text - fig. 2	Holotype: Y. Kawashita' s private collection	Upper reaches of the Kamimaki - zawa Creek, in a right branch 1 km upstream from the branching point, Oyubari area, Sorachi Province, central Hokkaido (ca. 142^10'E, 43^08'N)	Middle Yezo Group	Lower Turonian, Upper Cretaceous
Pseudobarroisiceras compressum	Matsumoto and Toshimitsu, 1984	Mem. Fac. Sci., Kyushu univ., Ser. D (Geol.), Vol. 25, No. 2, p. 237, pl. 34, fig. 1a, b; text - fig. 4A - C	Holotype: YKC. 57 - 6 - 20 B, Y. Kawashita's private collection	Floated or fallen nodule at RH2715p in the Karasemi - zawa Creek, Haboro area, Rumoi Province, northwestern Hokkaido	Lower member of the Shirochi Formation, Middle Yezo Group	Upper Turonian, Upper Cretaceous
Pseudohaploceras japonicum	Obata and Matsukawa, 1984	Bull. Nat. Sci. Mus., Ser. C (Geol.), Vol. 10, No. 1, p. 28, pl. 2, figs. 4, 5a, b	Holotype: NSM. PM7296 (pl. 2, fig. 5a, b) / Paratype: NSM. PM7297 (pl. 2, fig. 4)	Loc. SA - 203, Mamono - zawa Valley, Nakazato village, Gunma Prefecture, central Honshu (ca. 138^50'E, 36^14'00" N)	Ishido Formation	Barremian, Lower Cretaceous
Pseudoleymeriella hataii	Obata, 1973	Sci Rep. Tohoku Univ., 2nd Ser., Spec. Vol. 6, p. 310, pl. 34, figs. 1a - d, 4a - c, 5a - d, 7a - c, 8a - d, text - figs. 1, 2	Holotype: NSM. PM7282 (pl. 34, fig. 1a - d) / Paratypes: NSM. PM7283 (pl. 34, fig. 8a - d, text - fig. 1), NSM. PM7285 (pl. 34, fig. 4a - c), NSM. PM7287 (pl. 34, fig.v7a - c), NSM. PM7288 (pl. 34, fig. 5a - d, text - fig. 2), NSM. PM7290 (list only), NSM. PM7291 (list only)	Loc. Hn. 0650, Aketo coast, Tanohata village, Shimohei County, Iwate Prefecture, Pacific Coast of northern Honshu (141^56'53" E, 39^56'24" N)	Upper part of the "Orbitolina Sandstone" [=uppermost part of the Hiraiga Formation], Miyako Group	Upper Aptian, Lower Cretaceous
Pseudoleymeriella hiranamensis	Obata, 1973	Sci Rep. Tohoku Univ., 2nd Ser., Spec. Vol. 6, p. 312, pl. 34, fig. 6a - d	Holotype: NSM. PM7284	Loc. Hn. 0650, Aketo coast, Tanohata village, Shimohei County, Iwate Prefecture, Pacific Coast of northern Honshu (141^56'53" E, 39^56'24" N)	Upper part of the "Orbitolina Sandstone" [=uppermost part of the Hiraiga Formation], Miyako Group	Upper Aptian, Lower Cretaceous
Pteropuzosia kawashitai	Matsumoto, 1988	Palaeont. Soc. Japan, Spec. Paps., No. 30, p. 159, fig. 79	Holotype: YKC. 540610, Y. Kawashita's private collection	A point about 900 m upstream from the entrance of the 66 - rimpan - zawa Creek near Tengu - bashi Bridge, a tributary of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (the locality in now under the Obirashibe Lake) (141^55'16" E, 44^03'54" N)	Unit Mj - k, Middle Yezo Group	Turonian, Upper Cretaceous
Pulchellia maedai
Pulchellia minima
Puzosia elegans	Matsumoto, 1988	Palaeont. Soc. Japan, Spec. Paps., No. 30, p. 36, fig. 4.	Holotype: NSM. Pl - 6345	Loc. Ik 1038, an outcrop exposed on the right (northern) side of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (142^00'14" E, 43^14'33" N)	Unit IIc, Mikasa Formation	Upper Cenomanian, Upper Cretaceous
Sharpeiceras kikuae	Matsumoto and Kawashita, 1995	Jour. Fac. Educ., Saga Univ., Vol. 42, No. 2, p. 186, pl. 5, fig. 1a, b	Holotype: YKC. 060628, Y. Kawashita's private collection	Loc. Y 5091, Hakkin - zawa Creek, a tributary of the Shiyubari (= Yubari) Rover, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido (142^10'32" E, 43^02'10" N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Shasticrioceras intermedium	Matsukawa and Obata, 1993	Palaeontology, Vol. 36, No. 2, p. 258, text - fig. 5A, B	Holotype: NSM. PM7446	Loc. 1405, Suhara, Yuasa area, Wakayama Prefecture, west Honshu (135^10'01" E, 34^02'35" N)	Upper part of the Arida Formation	Lower Barremian, Lower Cretaceous
Subprionocyclus latus
Tongoboryceras kawashitai
Trianglites antiqus	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 350, pl. 58, fig. 1	Holotype: NSM. PM7259	Saku - gakko - no - sawa Creek, Saku area, Nakagawa Town, Teshio Province, northwestern Hokkaido (ca. 142^1 - 2' E, 44^44'N)	Saku Formation, Middle Yezo Group	Turonian?, Upper Cretaceous
Yeharaites kawashitai	Matsumoto, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 49, pl. 9, fig. 1	Holotype: YKC. 010718, Yoshitaro Kawashita's private collection	Loc. S - 901, Hakkin - zawa Creek, a tributary of the Yubari (Shiyubari) River, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido (ca. 142^11'E, 43^02'N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Yezoceras nodosum	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser D (Geol.), Vol. 23, No. 3, p. 317, pl. 45, fig. 2; pl. 46, fig. 4	(Holotype: NSM. PM7254 (pl. 45, fig. 2)) / (Paratype: NNSM. PM7255 (pl. 46, fig. 4))	Loc. Ik 2156b, Pombetsu - go - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'00" E, 43^14'19" N)	Upper Yezo Group	Coniacian, Upper Cretaceous

Tsukuba University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Anisoceras hashimotoi	Inoma, 1980	Prof. Saburo Kanno Memorial Volume, p. 172, pl. 22, fig. 1	Holotype: TKD. 30543	Loc. P6, a rolled nodule in the Shumarinai River, Shumarinai - Soeushinai area, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Uppermost Albian or Lowest Cenomanian, mid - Cretaceous
Eogunnarites hashimotoi	Matsumoto and Inoma, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p.120 - 122, pl. 30, figs. 1 - 2	Holotype: TKD. 30590	Loc. P2, Shumarinai River, Shumarinai - Soeushinai area, Uryu County, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Ficheuria pusilla	Matsumoto and Inoma, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 2, p. 290, text - fig. 15; pl. 42, fig. 4	Holotype: TKD. 30603	Loc. P5, Shumarinai River, Shumarinai - Soeushinai area, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Upper Albian, Lower Cretaceous
Hemiptychoceras ezoanum	Inoma, 1980	Prof. Saburo Kanno Mem. Vol., Univ. Tsukuba, p. 167, pl. 21, figs. 1, 2; text - fig. 1	Holotype: TKD. 300721B (pl. 21, fig. 2); Paratype: TKD. 30071A (pl. 21, fig. 1; text - fig. 1)	Loc. 70904A, Shumarinai River, Shumarinai - Soeushinai area, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Cenomanian, Upper Cretaceous
Marshallites kossmati	Matsumoto and Inoma, 1991	Palaeont. Soc. Jap., Spec. Paps., No. 33, p.108, pl. 25, fig. 1	Holotype: TKD. 30155	Loc. 70904B, Shumarinai River, Shumarinai - Soeushinai area, Uryu County, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Metaptychoceras periodicum	Inoma, 1980	Professor Saburo Kanno Memorial Volume, p. 169, pl. 21, figs. 10 - 13; text - fig. 3	Holotype: TKD. 30072A (pl. 21, fig. 12) / Paratypes: TKD. 30072D (pl. 21, fig. 10), TKD. 30072B (pl. 21, fig. 11; text - fig. 3), TKD. 30072C (pl. 21, fig. 13)	Loc. 70904A, the Shumarinai River, Shumarinai - Soeushinai area, Uryu County, northwestern Hokkaido (142^05'30" E, 44^16'43" N)	Middle Yezo Group	Uppermost Albian or Lowest Cenomanian, mid - Cretaceous
Reesidites elegans	Matsumoto and Inoma, 1971	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 21, No. 1, p. 139, pl. 23, figs. 1 - 3	Holotype: TKU. 30376 - (1) (Institute of Geoscience, Tsukuba University)(pl. 23, fig. 1) / Paratypes: TKU. 30376 - (2) (pl. 23, fig. 2), TKU. 30376 - (3) (pl. 23, fig. 3), (Institute of Geoscience, Tsukuba University)	Loc. 71705, upper reaches of the Shirochiune - zawa Creek, a branch of the Naka - futamata - gawa River, Haboro area, Rumoi Province, northwestern Hokkaido (142^02'20" E, 44^17'34" N)	Unit Uy2 in the geological map "Soeushinai", Upper Yezo Group	Upper Turonian, Upper Cretaceous
Scaphites japonicus	Inoma, 1980	Prof. Saburo Kanno Memorial Vol., p. 176, pl. 22, fig. 11.	Holotype: TKD. 30565	P7, a rolled nodule in the Shumarinai River, Shumarinai - Soeushinai area, northwestern Hokkaido (142^05'26" E, 44^16'42" N)	Middle Yezo Group	Uppermost Albian or Lowest Cenomanian, mid - Cretaceous
Sciponoceras matsumotoi	Inoma, 1980	Prof. Saburo Kanno Memorial Volume, p.171, text - fig. 4; pl. 21, fig. 14	Holotype: TKD. 30538A	P1, a rolled nodule in the Shumarinai River, Shumarina - Soeushinai area, northwestern Hokkaido (142^05'26" E, 44^16'42" N)	Middle Yezo Group	Uppermost Albian or Lowest Cenomanian, mid - Cretaceous
Stoliczkaia (Shumarinaia) asiatica	Matsumoto and Inoma, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 2, p. 279, pl. 39, fig. 6	Holotype: TKD. 30173 A	Loc. 70904A, Shumarinai River, Shumarinai - Soeushinai area, Horokanai Town, Uryu County, northwestern Hokkaido (142^05'28" E, 44^16'39" N)	Middle Yezo Group	Upper Albian to Lower Cenomanian, mid - Cretaceous
Stoliczkaia (Shumarinaia) hashimotoi	Matsumoto and Inoma, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 2, p. 277, pl. 39, fig. 1a, b; text - fig. 10a, b	Holotype: TKD. 30178A	Loc. 70904A, Shumarinai River, Shumarinai - Soeushinai area, Horokanai Town, Uryu County, northwestern Hokkaido (142^05'28" E, 44^16'39" N)	Middle Yezo Group	Upper Albian to Lower Cenomanian, mid - Cretaceous
Stoliczkaia (Stoliczkaia) yezoana	Matsumoto and Inoma, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 2, p. 275, text - fig. 9; pl. 39, fig. 8	Holotype: TKD. 30177	Loc. 70904A, Shumarinai River, Shumarinai - Soeushinai area, Horokanai Town, Uryu County, northwestern Hokkaido (142^05'28" E, 44^16'39" N)	Middle Yezo Group	Upper Albian to Lower Cenomanian, mid - Cretaceous
Stomohamites japonicum	Inoma, 1980	Prof. Saburo Kanno Memorial Volume, p. 168, pl. 21, fig. 3	Holotype: TKD. 30069A (pl. 21, fig. 3),	Loc. 70904A, Shumarinai River, Shumarinai - Soeushinai area Horokanai Town, Uryu County, northwestern Hokkaido (142^05'28" E, 44^16'39" N)	Middle Yezo Group	Upper Albian to Lower Cenomanian, mid - Cretaceous

The University of Tokyo
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Acanthoceras pseudodeverianum	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 178, pl. 5, fig. 1, 1a	Holotype: UMUT MM7516 (= GT. I - 106)	Obirashibets (= Obirashibe River), Tappu area, Obira Town, northwestern Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous	(= Romaniceras pseudodeverianum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Romaniceras by Matsumoto, Saito, and Fukada (1957, p. 22). / Reference: Matsumoto, T., Saito, R. and Fukada, A., 1957. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 6, No. 1, pp. 1 - 45, pls. 1 - 18. [see printed matter]
Acanthoceras rotomagense var. asiatica	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 177, pl. 4, fig. 1, 1a	Holotype: UMUT MM7512 (= GT. I - 105)	Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido	Middle Yezo Group	Middle Cenomanian, Upper Cretaceous	(= Calycoceras asiaticum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Calycoceras by Matsumoto, Saito and Fukada (1957, p. 11). / Reference: Matsumoto, T., Saito, R. and Fukada, A., 1957. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 6, No. 1, pp. 1 - 45, pls. 1 - 18. [see printed matter]
Ammonites kotoi	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p.26, pl.6, figs. 3, 4	Holotype: UMUT MM 7561 (= GT. I - 254)	Yubarigawa (=Yubari River), Sorachi Province, central Hokkaido	Upper Yezo Group	Upper Cretaceous	Remarks: Matsumoto (1973, p. 32, fig. 2) regarded this species as synonymous with Fagesia thevestensis (Peron, 1896). / Reference: Matsumoto, T., 1973. Trans. Proc. Palaeont. Soc. Japan, N. S., No. 89, 27 - 41, pl. 8.
Anapachydiscus deccanensis yezoensis	Matsumoto, 1979	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 113, p. 36, pl. 7, fig. 1	Holotype: UMUT MM5645 (= GT. I - 2742)	Sanushibe River, Hobetsu area, Iburi Province, southern central Hokkaido (ca. 142^08'E, 42^52'N)	Anapachydiscus beds, Upper Yezo Group	Santonian, Upper Cretaceous
Anathoceras pseudodeverianum	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 178, pl. 5, fig. 1,1a	Holotype: UMUT MM7516 (= GT. I - 106)	Obirashibets (= Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous
Anathoceras rotomagense var. asiatica	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 177, pl. 4, fig. 1,1a	Holotype: UMUT MM7512 (= GT. I - 105)	Ikushumbets, Mikasa City, Sorachi Province, central Hokkaido	Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Baculites regina	Obata and Matsumoto, 1963	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 85, pl.22, figs. 3 - 6; pl. 23, fig. 1; pl. 24, figs. 1, 3; text - fig. 195, 196, 207, 209	Holotype: UMUT MM7716b (= GT. I - 575b)(pl. 24, fig. 1) / Paratypes: UMUT MM7715 [= GT. I - 574](pl. 22, fig. 3; text - fig. 207), UMUT MM7718b [= GT. I - 578b](pl. 22, fig.4; text - fig. 195), UMUT MM7716a [= GT.I - 575a](pl. 23, fig. 1; text - fig. 207), UMUT MM7716c [= GT. I - 575c](pl. 22, fig. 5; text - fig. 209), UMUT MM7718a [= GT. I - 578a](pl. 22, fig. 6), UMUT MM7719 [= GT.I - 580](pl. 24, fig. 3)	Kuratani, Shinke, Sennan County (now Izumisano City), Osaka Prefecture, west Japan (ca. 135^20'E, 34^21'N)	Azenotani shale Member, Izumi Group	Probably Campanian, Upper Cretaceous
Calycoceras orientale	Matsumoto, Saito and Fukada, 1957	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 6, No. 1, p. 16, pl. 5, fig. 1a - c	Holotype: UMUT MM5657 (= GT. I - 3168)	Loc. T711b, Nionosawa Creek, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^01'15" E, 44^46'31" N)	Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Canadoceras kossmati	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 295, pl. 13, fig. 1a, b	Holotype: UMUT MM7650 (= GT. I - 381)	The Chiptaushibets Creek, Tsumbetsu, Kitami Province, northern Hokkaido	Hakobuchi Group	Lower Maastrichitian, Upper Cretaceous
Canadoceras multicostatum	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 304, pl. 18, fig. 1a - c	Holotype: UMUT MM9118 (= GT. I - 1444)	Loc. Togushi 825, Nishi - Notoro Peninsula, Sakhalin, Russia (ca. 142^07'E, 46^03'N)	Ryugase Group	Campanian ?, Upper Cretaceous
Crioceras spinigerum	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 184, pl. 8, fig. 1, 1a, b	Lectotype: UMUT MM7521 (= GT. I - 122)(pl. 8, fig. 1) / Paralectotype: UMUT MM7522 (= GT. I - 123)(pl. 8, fig. 1a, b)	Tshashikots in Ikandai, Urakawa area, Hidaka Province, southern - central Hokkaido (142^44'23" E, 42^10'32" N)	Upper Yezo Group	Santonian, Upper Cretaceous	(= Neocrioceras spinigerum (Jimbo, 1894)) / Remarks: The genetric position of this species was transferred to Neocrioceras by Spath (1921). Lectotype was designated by Matsumoto (1985, p. 56). / References: Spath, L. F., 1921. Ann. Durban Mus., Vol. 3, 39 - 57, pls. 6 - 7. Matsumoto, T., 1985. Proc. Jap. Acad., Vol. 61, Ser. B, 56 - 59.
Damesites semicostatus	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 5, No. 3, p. 126, pl. 25, fig. 1a - d	Lectotype: UMUT MM5579 (= GT. I - 3104)	Loc. T592b, the Abeshinai Valley, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^02'43" E, 44^42'32" N)	Unit IIIa, Upper Yezo Group	Lower Santonian, Upper Cretaceous	Remarks: Lectotype was designated by Obata (1959, p. 35). / Reference: Obata, I., 1959. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 9, no. 1,pp. 33 - 45, pls. 4 - 5.
Desmoceras (Pseudouhligella) ezoanum	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands. Jap. Soc. Prom. Sci., Tokyo, p. 260, pl. 3, fig. 1a - c	Holotype: UMUT MM6705 (= GT. I - 3030)	Loc. T843, Chirashinai River, Abeshinai - Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^06'03" E, 44^42'37" N)	Unit IIb - c, Middle Yezo Group	Cenomanian, Upper Cretaceous
Desmoceras (Pseudouhligella) japonicum compressior	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands. Jap. Soc. Prom. Sci., Tokyo, p. 258, pl. 2, fig. 4a - c	Holotype: UMUT MM6694 (= GT. I - 3026)	Loc. T225c, a small eastern tributary No. 9 of the Abeshinai River, Nakagawa Town, Teshio Province, northern Hokkaido (142^02'43" E, 44^40'32" N)	Unit IIb, Middle Yezo Group	Cenomanian, Upper Cretaceous
Desmoceras (Pseudouhligella) japonicum mediocompressa	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands. Jap. Soc. Prom. Sci., Tokyo, p. 257, pl. 2, fig. 2a, b	Holotype: UMUT MM6690 (= GT. I - 3020a)	Loc. T608, the Saku River, Nakagawa Town, Teshio Province, northern Hokkaido (142^05'41" E, 44^44'47" N)	Unit IIb, Middle Yezo Group	Cenomanian, Upper Cretaceous
Desmoceras Dawsoni Whiteaves var. japonica	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p. 35, pl. 5, figs. 3a,b	Holotype: UMUT MM7574 (= GT. I - 260)	Middle course of the Ikushumbets River, Mikasa City, Ishikari Province, central Hokkaido (ca. 141^59'E, 43^15'N)	Middle Yezo Group (Thetis zone, associated with Thetis aff. Whiteaves)	Cenomanian, Upper Cretaceous	(= Desmoceras (Pseudouhligella) japonicum Yabe, 1904)
Desmoceras ishikawai	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 174, pl. 1, fig. 5, 5a	Lectotype: UMUT MM7507 (= GT. I - 95a)	The Obirashibetsu River, about 52 km from its mouth, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Yezo Group	Santonian, Upper Cretaceous	(= Yokoyamaoceras ishikawai (Jimbo, 1894), macroconch) / Remarks: Lectotype was designated by Matsumoto (1954, p. 94). The generic position of this species was transferred to Yokoyamaoceras by Maeda (1993, p. 122). / References: Matsumoto, T., 1954. In T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, 243 - 324, pls.1 - 20, Japan Society for Promotion of Science, Tokyo. Maeda, H., 1993. Trans. Proc. Palaeont. Soc. Jap., N. S., No. 169, 97 - 128. [see printed matter]
Desmoceras kawanoi	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 174, pl. 1, fig.7, 7a	Holotype: UMUT MM7509 (= GT. I - 98)	Tshashikots in Ikandai near Urakawa, Hidaka Province, southern - central Hokkaido (142^44'23" E, 42^10'32" N)	Upper Yezo Group	Santonian, Upper Cretaceous	(= Zelandites kawanoi (Jimbo, 1894)) / Remarks: Generic position of this species was transferred to Zelandites by Matsumoto (1938, p. 143). / Reference: Matsumoto, T., 1938. Jap. Jour. Geol. Geogr., Vol. 15, 137 - 148, pl. 14. [see printed matter]
Desmoceras kossmati	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands. Jap. Soc. Prom. Sci., Tokyo, p. 249, pl. 1, fig. 1a, b	Lectotype: UMUT MM6667 (= GT. I - 2551)	Loc. N507p, Iwano - sawa, Naibuchi (= Naiba) area, south Sakhalin, Russia (ca. 142^34'E, 47^17'N)	Member Ky, Kawakita Group	Uppermost Albian or Lowest Cenomanian, Upper ? Cretaceous	Remarks: Lectotype was designated by Obata (1959, p. 34). / Reference: Obata, I., 1959. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 9, No. 1, 33 - 45, pls. 4 - 5.
Desmoceras planulatiforme	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p.173, pl.1, fig.4,4a	Lectotype: UMUT MM7499 (= GT. I - 94)	Opirashibets (= Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous	(= Jimboiceras planulatiforme (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Jimboiceras by Shimizu (1935, p. 180). Lectotype was designated by Matsumoto (1963, p. 43, pl. 60, fig. 4). / References: Shimizu, S., 1935. Jour. Shanghai Sci. Inst., Sec. 2, Vol. 1, 159 - 226. Matsumoto, T., 1963.Palaeont. Soc. Jap., 25th Anniv. Vol., 41 - 48, pls. 60 - 68. [see printed matter]
Desmoceras poronaicum	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p. 39, pl. 6, figs. 1, 2	Holotype: UMUT MM7456 (= GT. I - 261, 262)	Poronai, Province of Ishikari, central Hokkaido	Upper Ammonite - beds, Middle Yezo Group	Senonian (Cenomanian), Upper Cretaceous	(= Desmoceras (Pseudouhligella) poronaicum Yabe, 1904)
Desmoceras yubarense	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 174, pl. 1, fig. 6, 6a.	Holotype: UMUT MM7508 (= GT. I - 97)	Yubari, Sorachi Province, central Hokkaido	Upper Yezo Group	Coniacian, Upper Cretaceous	(= Mesopuzosia yubarense (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Mesopuzosia by Matsumoto (1954, p. 86, pl. 13, fig. 3a, b). / Reference: Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 5, No. 2, 69 - 118, pls. 9 - 23. [see printed matter]
Desmocers damesi	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 172, pl. 1, fig. 2, 2a, 2b	Lectotype: UMUT MM7500 (= GT. I - 91)	Between Tsuetomanai and Motomari, along the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Yezo Group	Coniacian - Santonian, Upper Cretaceous	(= Damesites damesi (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Damesites by Matsumoto (1942, p. 24). Matsumoto (1963, p. 42) designated this specimen as lectotype. / References: Matsumoto, T., 1942. Proc. Imp. Acad. Tokyo, Vol. 18, 24 - 29. Matsumoto, T., 1963. Palaeont. Soc. Japan, 25th Anniv. Vol., 41 - 48, pls. 60 - 68. [see printed matter]
Eomadrasites subnipponicus	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 137, pl. 10, fig. 2a, a', b, text - fig. 8	Holotype: UMUT MM6877 (= GT. I - 3235)	Loc. T863, the Abeshinai Valley, Saku (Abeshinai) area, Nakagawa Town, northern Hokkaido (142^02'33" E, 44^41'31" N)	Unit IIa, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Epigoniceras glabrum var. problematica	Matsumoto, 1942	Proc. Imp. Acad. Tokyo, Vol. 18, p. 672, fig. 1	Holotype: UMUT MM5529	Hokkaido (no detailed locality record)	Upper Yezo Group	Senonian, Upper Cretaceous
Gaudryceras intermedium
Gaudryceras limatum	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 34, pl. 6, fig. 3a, b	Holotype: UMUT MM7465 (= GT. I - 193)	Yoshiashizawa Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Upper Ammonite - beds (= Upper Yezo Group)	Coniacian, Upper Cretaceous	(= Anagaudryceras limatum (Yabe, 1903)) / Remarks: The generic position of this species was transferred to Anagaudryceras by Matsumoto (1942, p. 666). / Reference: Matsumoto, T., 1942. Proc. Imp. Acad. Tokyo, Vol.18, 666 - 670.
Gaudryceras striatum var. picta	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 31, pl. 4, fig. 6a - c	Holotype: UMUT MM7467 (= GT. I - 192)	Uipets - rubeshibe, Enbetsu Town, Province of Teshio, northern Hokkaido (ca. 141^59'E, 44^42'N)	Pachydiscus - beds (= Upper Yezo Group)	Campanian, Upper Cretaceous
Gaudryceras subcostatum	Matsumoto, 1995	Palaeont. Soc. Japan, Spec. Paps., No. 35, p. 75, fig. 38A - E	Holotype: UMUT MM19693 (= GT. I - 3268a)(fig. 38A - C) / Paratype: UMUT MM19694 (= GT. I - 3268b)(fig. 38D, E)	Loc. T 881b, Shibunnai, Abeshinai River, Nakagawa Town, Teshio Province, northern Hokkaido (142^05'24" E, 44^39'41" N)	Unit IIb, Middle Yezo Group	Cenomanian, Upper Cretaceous
Gaudryceras tenuiliratum var. infrequens	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p.28, pl. 4, fig.3a,b.	Lectotype: UMUT MM7470 (missing)	Opiraushibets (= Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Ammonite - beds (Scaphites beds) (= Middle Yezo Group)	Senonian, Upper Cretaceous	Remarks: Matsumoto (1995, p. 103) designated this 254 K. Tanabe and Y. Shigeta specimen as the lectotype, but the specimen is now missing. / Reference: Matsumoto, T., 1995. Palaeont. Soc. Japan, Spec. Paps., No. 35, 1 - 152, pls. 10 - 31.
Gaudryceras yamashitai	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 38, pl. 4, fig. 7	Holotype: UMUT MM7462 (= GT. I - 201)	Makausippe or Sanushibe, Popets (= Hobetsu River), Hobetsu area, Iburi Province, Hokkaido	Upper Ammonite - beds (= Upper Yezo Group)	Senonian, Upper Cretaceous	(= Anagaudryceras yamashitai (Yabe, 1903)) / Remarks: The generic position of this species was transferred to Anagaudryceras by Matsumoto (1942, p. 666). / Reference: Matsumoto, T., 1942. Proc. Imp. Acad. Tokyo, Vol. 18, 666 - 670.
Gaudryceras yokoyamai	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 36, pl. 6, figs. 1a - b, 2a - b; pl. 7, fig. 6'	Holotype: UMUT MM7464 (= GT. I - 197)(pl. 6, fig. 1a, b) / Paratypes: UMUT MM7463 (= GT. I - 208)(pl. 6, fig. 2a, b; pl. 7, fig. 6' ), UMUT. MM19777 [= GT. I - 199] (list only)	Yubarizawa(= Yubari River or Ikushumbets River), Province of Ishikari (now Sorachi), central Hokkaido	Upper Ammonite - beds (= Upper Yezo Group)	Senonian, Upper Cretaceous	(= Anagaudryceras yokoyamai (Yabe, 1903)) / Remarks: The generic position of this species was transferred to Anagaudryceras by Matsumoto (1941, p. 20). / Reference: Matsumoto, T., 1941. Jour. Geol. Soc. Japan, Vol. 48, No. 568, 17 - 37 (in Japanese).
Hamites obstrictum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 184, pl. 7, fig. 2,2a	Lectotype: UMUT MM7523 (= GT. I - 124)	The Obirashibe River, about 48 km from its mouth, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Yezo Group	Upper Cretaceous	(= Polyptychoceras obstrictum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Polyptychoceras by Wright and Matsumoto (1954, p. 117). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8. [see printed matter]
Hamites quadrinodosus	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 185, pl. 7, fig. 3,3a	Lectotype: UMUT MM7524 - 1 (= GT. I - 125)	Near Chupitaushunai, a left tributary of the Tonbetsu River, Kitami Province, northern Hokkaido	Upper Yezo Group	Turonian - Campanian, Upper Cretaceous	(= Pseudoxybeloceras quadrinodosum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Polyptychoceras by Wright and Matsumoto (1954, p. 119). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8. [see printed matter]
Hauericeras angustum	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 33, pl. 5, figs. 5, 6.	Holotype: UMUT MM7573 (= GT. I - 257)	Ikandai coast, near Urakawa, Province of Hidaka, southern Hokkaido (142^44'23" E, 42^10'32" N)	Upper Ammonite - beds (=Upper Yezo Group)	Senonian, Upper Cretaceous	(= Hauericeras (Gardeniceras) angustum Yabe, 1904)
Helicoceras (?) venustum	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 11, pl. 5, figs. 1, 2.	Holotype: UMUT MM7552 (= GT. I - 240)	Sanushibe, Province of Iburi, central Hokkaido	Pachydiscus - beds (=Upper Yezo Group)	Senonian, Upper Cretaceous
Helicoceras scalare	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 9, pl. 3, fig. 2.	Holotype: UMUT MM7549a (= GT. I - 233)	Opiraushibets (=Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Scaphites - beds (=Middle Yezo Group)	Senonian (Turonian), Upper Cretaceous	(= Scalarites scalaris (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Polyptychoceras by Wright and Matsumoto (1954, p. 117). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8.
Heteroceras (?) japonicum	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 17, pl. 3, fig. 8.	Holotype: UMUT MM7559 (= GT. I - 249)	Yubarigawa (=Yubari River), Province of Ishikari, central Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous	(= Eubostrychoceras japonicum (Yabe, 1904)) / Rmemarks: The generic position of this species was transferred to Eubostrychoceras by Matsumoto (1977, p. 329). / Reference: Matsumoto, T., 1977. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 23, No. 3, 303 - 366, pls. 43 - 61.
Heteroceras (?) orientale	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 19, pl. 3, fig. 7.	Holotype: UMUT MM7572 (= GT. I - 251)	Urakawa, Province of Hidaka, southern central Hokkaido	Upper Ammonite - beds (= Upper Yezo Group)	Senonian (Santonian), Upper Cretaceous	(= Hyphantoceras orientale (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Hyphantoceras by Matsumoto (1977, p. 310). / Reference: Matsumoto, T., 1977. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 23, No. 3, 303 - 366, pls. 43 - 61.
Heteroceras (?) oshimai	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 12, pl. 3, fig. 5.	Holotype: UMUT MM7553 (= GT. I - 241)	Ikushumbets, Province of Ishikari (now Sorachi), central Hokkaido	Upper Ammonite - beds (= Upper Yezo Group)	Senonian (Santonian), Upper Cretaceous	(=Hyphantoceras oshimai (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Hyphantoceras by Shimizu (1935, p. 193). / Reference: Shimizu, S., 1935. Jour. Shanghai Sci. Inst., Sec. 2, Vol. 1, 159 - 226.
Heteroceras (?) otsukai	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 16, pl. 4, fig. 1	Holotype: UMUT MM7555 (= GT. I - 243)	Kikumezawa Creek, a tributary of the Ikushunbets River, Province of Ishikari (now Sorachi), central Hokkaido (ca. 142^01'E, 43^13'N)	Pachydiscus - beds (=Upper Yezo Group)	Senonian (Santonian), Upper Cretaceous	(= Bostrychoceras otsukai (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Bostrychoceras by Matsumoto (1967, p. 338). / Reference: Matsumoto, T., 1967. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 18, No. 2, 331 - 347, pls. 18 - 19.
Heteroceras (?) otsukai var. multicostata	Yabe, 1904	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 16, pl. 3, fig. 9.	Holotype: UMUT MM7558 (= GT. I - 231)	Opiraushibets (=Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Scaphites - beds (Middle Yezo Group)	Senonian (Turonian), Upper Cretaceous	(=Bostrychoceras otsukai var. multicostata (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Bostrychoceras by Matsumoto (1967, p. 338). / Reference: Matsumoto, T., 1967. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 18, No. 2, 331 - 347, pls. 18 - 19.
Holcodiscus kotoi	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 179, pl. 5, fig. 2,2a	Holotype: UMUT MM7517 (= GT. I - 107)	The Obirashibe River, about 60 km from its mouth, Rumoi Province, northwestern Hokkaido	Upper Yezo Group	Upper Turonian - Coniacian, Upper Cretaceous	(= Yokoyamaoceras kotoi (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Yokoyamaoceras by Wright and Matsumoto (1954, p. 128). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8. [see printed matter]
Jimboiceras mihoense	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 98, pl. 21, fig. 1	Holotype: UMUT MM9130 (= GT. I - 2641)	Loc. N131m, the Naibuchi Valley, Naibuchi (=Naiba) district, south Sakhalin, Russia (ca. 142^33'E, 47^20'N)	Zone Mh 5, Miho Group	Upper Coniacian or lower Santonian, Upper Cretaceous
Kossmaticeras japonicum	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 150, pl. 9, fig. 3a, b	Holotype: UMUT MM7627 (= GT. I - 353)	Kikume - zawa Creek, a tributary of the Ikushumbets River, Ikushumbetsu area, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^01'E, 43^13'N)	Upper Yezo Group	Senonian, Upper Cretaceous
Lytoceras crassicostatum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 182, pl. 6, fig. 7,7a	Holotype: UMUT MM7492 (= GT. I - 117)	Near the Town of Soya, Soya Peninsula, Kitami Province, northern Hokkaido (ca. 141^53'E, 45^30'N)	Hakobuchi Group	Upper Campanian, Upper Cretaceous	(= Gaudryceras crassicostatum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Gaudryceras by Yabe (1903, p. 29). / Reference : Yabe, H., 1903. Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, 1 - 55, pls. 1 - 7. [see printed matter]
Lytoceras crassum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 181, pl. 6, fig. 5, 5a	Holotype: UMUT MM7515 (= GT. I - 115)	A nodule in the river gravel of the Pombets River, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous	(= Tetragonites crassus (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Tetragonites by Matsumoto (1942, p. 672), who suggested this species as a variety of Epigoniceras glabrum (Jimbo, 1894). / Reference: Matsumoto, T., 1942. Proc. Imp. Acad. Tokyo, Vol. 18, 666 - 670. [see printed matter]
Lytoceras denseplicatum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 182, pl. 7, fig. 1,1a	Holotype: UMUT MM7491 (= GT. I - 118)	Ekimommanoro, a branch of the Anoro River, Yubari coal - field, Sorachi Province, central Hokkaido	Yezo Group	Senonian, Upper Cretaceous	(= Gaudryceras denseplicatum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Gaudryceras by Yabe (1903, p. 27). / Reference : Yabe, H., 1903. Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, 1 - 55, pls. 1 - 7. [see printed matter]
Lytoceras ezoense	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 9, pl. 1, fig. 1; pl. 5, fig. 1	Holotype: UMUT MM7476	The Pombets River, a tributary of the Ikushumbets River, Mikasa City, Province of Sorachi, central Hokkaido	Lower Ammonite beds (= Middle Yezo Group)	Albian, Lower Cretaceous	(= Ammonoceratites yezoense (Yabe, 1903) / Remarks: The generic position of this species was transferred to Ammonoeras Lamarck, 1822 by Shimizu (1931, p. 21). Later, Arkell et al. (1957) treated Ammonoceras as a junior synonym of Ammonoceratites, Rfinesque, 1815). Reference: Shimizu, S., 1931. Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, 1 - 40, pls. 1 - 4; Arkell, W. J. et al., 1957. Mesozoic Ammonoideal. L80 - L465. In: Treatise on Invertebrate Paleontology, Part L, Mollusca 4 (ed. Moore, R. C).
Lytoceras glabrum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 180, pl. 6, fig. 2,2a	Holotype: UMUT MM7513 (= GT. I - 111)	Ikandai coast, Urakawa area, Hidaka Province, southern - central Hokkaido (142^44'23" E, 42^10'32" N)	Upper Yezo Group	Santonian, Upper Cretaceous	(= Tetragonites glabrus (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Tetragonites by Yabe (1903, p. 43). / Reference : Yabe, H., 1903. Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, 1 - 55, pls. 1 - 7. [see printed matter]
Lytoceras imperiale	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 11, pl. 2, fig. 1, pl. 4, fig. 1	Holotype: UMUT MM7475 (= GT. I - 173)	A cliff above the large gorge of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (ca. 141^59'E, 43^15'N)	Lower Ammonite - beds (= Middle Yezo Group)	Albian, Lower Cretaceous
Lytoceras striatum	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 181, pl. 6, fig. 5,5a	Holotype: UMUT MM7493 (= GT. I - 116)	Loc. The Abeshinai - Rubeshibe Creek, a tributary of the Abeshinai River, Nakagawa Town, Teshio Province, northern Hokkaido (142^00'23" E, 44^42'23" N)	Upper Yezo Group	Campanian, Upper Cretaceous	(= Gaudryceras striatum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Gaudryceras by Yabe (1903, p. 31). / Reference : Yabe, H., 1903. Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, 1 - 55, pls. 1 - 7. [see printed matter]
Marshallites compressus	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 123, pl. 8, figs. 1, 2 & 4	Holotype: UMUT MM6863 (= GT. I - 3231) [=transferred to Kyushu University, GK. H2751] (pl. 8, fig. 1a, b) / Paratypes: UMUT MM6864 (= GT. I - 3234b)(pl. 8, fig. 2), UMUT MM6866 (= GT. I - 3236)(pl. 1, fig. 4)	Loc. T608, Saku - gawa Creek, Abeshinai - Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^05'42" E, 44^44'47" N)	Middle Yezo Group	Cenomanian, Upper Cretaceous
Marshallites compressus puzosioides	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 125, pl. 8, figs. 3, 4	Holotype: UMUT MM6867 (= GT. I - 3240)(pl. 8, fig. 3) / Paratype: UMUT MM6868 (= GT. I - 3239) (pl. 8, fig. 4a, b)	Loc. T863, the Abeshinai River, Abeshinai area, Nakagawa Town, Teshio province, northern Hokkaido (142^02'35" E, 44^41'32" N)	Middle Yezo Group	Cenomanian, Upper Cretaceous
Menuites japonicus	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 3, p. 158, pl. 31, figs. 1a - c, 2a - d	Holotype: UMUT MM5626 (= GT. I - 3462)	Loc. T277c, an outcrop in the Abeshinai River, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^01'29" E, 44^40'22" N)	Unit IIId, Upper Yezo Group	Upper Santonian, Upper Cretaceous
Menuites naibutiensis	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 3, p. 164, pl. 33, fig. 1a - d	Holotype: UMUT MM5629 (= GT. I - 524)	The Juhachi - rinpan - nino - sawa Creek, Naibuchi (=Naiba) district, south Sakhalin, Russia (ca. 142^34'E, 47^18'N)	Probably unit Mh6, Miho Group	Senonian, Upper Cretaceous
Mesopuzosia densicostata	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 87, pl. 22, fig. 1a, b	Holotype: UMUT MM7694 (= GT. I - 544)	Santan - gawa Creek, a tributary of the Naibuchi Valley, Naibuchi (= Naiba) area, south, Sakhalin, Russia	Unit Mh6, Miho Group	Santonian, Upper Cretaceous
Mortoniceras kawasakii	Kawada, 1929	Jour. Geol. Soc. Tokyo, Vol. 36, No. 428, p. 4, pl. 14, figs. 2, 3	Holotype: UMUT MM7701 [= GT. I - 553]	Santan - gawa Creek, a tributary of the Naibuchi River, Naibuchi (=Naiba) district, south Sakhalin, Russia	Unit Mh 6, Miho Group	Santonian, Upper Cretaceous
Neocrioceras (?) sanushibense	Wright and Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 4, No. 2, p. 121, pl. 7, fig. 5a, b	Holotype: UMUT MM7619 (= GT. I - 342)	Saushisanushibe, Iburi Province, southern - central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous
Nipponites mirabilis	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p. 20, pl. 4, figs. 4 - 7; pl. 6, fig. 6	Holotype: UMUT MM7560 (= GT. I - 253)	Opiraushibets (= Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Ammonite - beds (= Middle Yezo Group)	Possibly Middle Turonian, Upper Cretaceous
Nipponites mirabilis var. sachalinensis	Kawada, 1929	Jour. Geol. Soc. Tokyo, Vol. 36, No. 428, p. 5, pl. 14, fig. 1	Holotype: UMUT MM7666	Miho River, Naibuchi (= Naiba) district, south Sakhalin, Russia (ca. 142^30'E, 47^19'N)	Miho Group	Turonian, Upper Cretaceous
Olcostephanus unicus	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p. 28, pl. 6, fig. 5	Holotype: UMUT MM7457 (= GT. I - 255)	Kamitakambe Creek, a right branch of the Ikushumbets River, between the Poronai and the Ikushumbets coal mines, Province of Sorachi, central Hokkaido (141^57'22" E, 43^14'06" N)	Mikasa Formation, Middle Yezo Group	Cenomanian, Upper Cretaceous	(= Eogunnarites unicus (Yabe, 1904)) / Remarks. The generic position of this species was transferred to Eogunnarites by Wright and Matsumoto (1954, p. 126). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, pp. 107 - 134, pls. 7 - 8.
Pachydesmoceras pachydiscoide	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 101, pl. 9, fig. 2a, b	Holotype: UMUT MM6660 (= GT. I - 2805)	The Naibuchi Valley, Naibuchi (= Naiba) district, south Sakhalin, Russia	Miho Group	Middle part of Turonian to Coniacian, Upper Cretaceous
Pachydiscus fascicostatus	Yabe, 1921	Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 5, No. 3, p. 57, pl. 8, fig. 5; pl. 9, figs. 2 - 5	Holotype: UMUT MM6764 (= GT. I - 386)	Tan - no - sawa, a tributary of the Abeshinai River, Abeshinai area, Nakagawa Town, northern Hokkaido (ca. 142^00'E, 44^41'N)	Zone of Metaplacenticeras subtilistriatum, Hakobuchi Group	Upper Campanian, Upper Cretaceous	(= Menuites fascicostatus (Yabe, 1921)) / Remarks: The generic position of this species was transferred to Menuites by Wright (1996, p. 106). / Reference: Wright, C. W., 1996. Treatise on Invertebrate Paleontology, Part L, Mollusca 4, Revised, Vol. 4, Cretaceous Ammonoidea, 362pp+ i - xx, Geol. Soc. Amer. & UNiv. Kansas.
Pachydiscus subcompressus	Matsumoto, 1954	In T. Matsumoto (editor): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 287, pl. 10, fig. 4a, b	Holotype: UMUT MM6821 (= GT. I - 2815)	Loc. N105, the Naibuchi Valley, Naibuchi (=Naiba) district, south Sakhalin, Russia (ca. 142^30'E, 47^19'N)	Ryugase Group ?	Senonian, Upper Cretaceous
Pachydiscus subcompressus obsoletus	Matsumoto, 1954	In T. Matsumoto (editor): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 289, pl. 10, fig. 5a, b	Holotype: UMUT MM6830 (= GT. I - 2827)( pl. 10, fig. 5a, b); Paratype: UMUT MM6831(= GT. I - 2828)	Hayakawa, the Naibuchi Valley, Naibuchi (=Naiba) district, south Sakhalin, Russia	Ryugase Group ?	Maastrichtian, Upper Cretaceous
Pachydiscus subtililobatus	Jimbo, 1894	Palaent. Abhandl., N. F., Vol. 2, No. 3, p. 176, pl. 4, fig. 2, 2a	Holotype: UMUT MM7496 (= GT. I - 102)	A marl nodule in the river gravel of the Chikapunnai Creek, a left tributary of the Abeshinai River, Saku - Abeshinai area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^01'20" E, 44^41'40" N)	Upper Yezo Group	Campanian, Upper Cretaceous	(= "Anapachydiscus" (= Menuites) subtililobatus (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Anapachydiscus by Matsumoto (1963, p.43, pl.63, fig.2). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap. 25th Anniv. Vol. 41 - 48, pls.60 - 68. [see printed matter]
Pachydiscus teshioensis	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 176, pl. 3, fig. 1, 1a	Holotype: UMUT MM7497 (= GT. I - 101)	A concretion in the river gravel, Tsikapunnai (=Chikabunnai), a left tributary of the Abeshinai River, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^01'20" E, 44^41'40" N)	Upper Yezo Group	Upper Cretaceous	(= Eupachydiscus teshioensis (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Eupachydiscus by Matsumoto (1963, p. 43). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Japan, 25th Anniv. Vol. 41 - 48, pls. 60 - 68. [see printed matter]
Pachydiscus yokoyamai	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p.177, pl. 2, fig.3, 3a	Lectotype: UMUT MM7511 (= GT. I - 103)	Chupitaushunai, a left tributary of the Tonbetsu, Kitami Province, northern Hokkaido (ca. 142^11'E, 44^53'N)	Upper Yezo Group	Upper Campanian, Upper Cretaceous	(= Canadoceras yokoyamai (Jimbo, 1894)) [see printed matter]
Parajaubertella kawakitana	Matsumoto, 1942	Proc. Imp. Acad. Tokyo, Vol. 18, p. 667, fig. 2a	Holotype: UMUT MM19698 (= GT. I - 3716)	Loc. N94b, the Yuno - sawa Creek, a tributary of the Naibuchi Valley, south Sakhalin, Russia (ca. 142^34'E, 47^20'N)	Member Ky, Kawakita Group	Lower Cenomanian, Upper Cretaceous
Parapachydiscus kobayashii	Shimizu, 1935	Jour. Shanghai Sci. Inst., Sec. 2, Vol. 1, No. 11, p. 208 (see also Jour. Geol. Soc. Tokyo, Vol. 38, pl. 11)	Holotype: UMUT MM7720 (= GT. I - 581)	Izumi Mountains, Wakayama Prefecture, southwest Japan.	Azenotani Formation, Izumi Group	Lower Maastrichtian, Upper Cretaceous	(= Pachydsicus (Pachydiscus) kobayashii (Shimizu, 1935)) / Remarks: The generic position of this species was transferred to Pachydiscus by Matsumoto and Morozumi (1980, p. 8). / Reference: Matsumoto, T. and Morozumi, Y., 1980. Bull. Osaka Mus. Nat. Hist., No. 33, 1 - 31, pls. 1 - 16.
Parapachydiscus kobayashii	Shimizu, 1935	Jour. Shanghai Sci. Inst., Sec. 2, Vol. 1, No. 11, p. 208	Holotype: UMUT MM7720 (= GT. I - 581)	Loc. 2, Azenotani, Sennan City, Osaka Prefecture, west Cretaceous Ammonoidea 277 Honshu (135^17'33" E, 34^21'04" N)	Horizon A2, Azenotani Formation, Izumi Group	Campanian or Maastrichtian, Upper Cretaceous	(= Pachydiscus (Pachydiscus) kobayashii (Shimizu, 1935)) / Remarks: The generic position of this species was transferred to Pachydiscus (Pachydiscus) by Matsumoto and Morozumi (1980, p. 8). / Reference: Matsumoto, T. and Morozumi, Y., 1980. Bull. Osaka Mus. Nat. Hist., No. 33, 1 - 31, pls. 1 - 16
Peroniceras amakusense	Yabe, 1902	Jour. Geol. Soc. Tokyo, Vol. 9, p. 4, pl. 1, fig. 1a, b	Lectotype: UMUT MM7480 (= GT. Cr. 1714)	Amakusa, Kumamoto Prefecture, west Kyushu	Upper Cretaceous beds (= Himenoura Group)	Lower Senonian, Upper Cretaceous	(= Texanites amakusense (Yabe, 1902)) / Remarks: The generic position of this species was transferred to Texanites by Matsumoto and Ueda (1962, p. 172), who also designated this specimen as the lectotype. / Reference: Matsumoto, T. and Ueda, Y., 1962. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 12, 162 - 174, pls. 22 - 27.
Placenticeras subtilistiriatum	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p.171, pl.1, fig.1,1a	Lectotype: UMUT MM7502 (= GT. I - 88)	Wembets (= Embetsu) - Rubeshibe River, Embetsu Town, northern Hokkaido (141^58'49" E, 44^41'50" N)	Hakobuchi Group	Upper Campanian, Upper Cretaceous	(= Metaplacenticeras subtilistriatum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Metaplacenticeras by Matsumoto (1953, p. 140). Matsumoto (1984, p. 21) designated one of Jimbo's (1894) two syntypes as the lectotype. / References: Matsumoto, T., 1953. Jap. Jour. Geol. Geogr., Vol. 23, 139 - 150, pl. 13. Matsumoto, T., 1984. Palaeont. Soc. Jap. Spec. Paps. No. 27, 5 - 32, pls. 1 - 9. [see printed matter]
Polyptychoceras (Subptychoceras) sp.
Puzosia (?) ambigua	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 78, pl. 10, figs. 2, 3	Holotype: UMUT MM6612 (= GT. I - 2639)	Loc. N309d, the Naibuchi Valley, Naibuchi (= Naiba) district, south Sakhalin, Russia (ca. 142^33'E, 47^18'N)	Unit Mho, Miho Group	Cenomanian, Upper Cretaceous	Remarks: Matsumoto (1988, p. 98) regarded this species as a junior synonym of Austiniceras austeni (Sharpe, 1855). / Reference: Matsumoto, T., 1988. Palaeont. Soc. Jap. Spec. Paps., No. 30, 1 - 179, figs. 1 - 88.
Puzosia nipponica	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 5, No. 2, p. 77, pl. 10, fig. 1a, b	Holotype: UMUT MM6600 (= GT. I - 3191)	A river gravel in the Saku - gakkono - sawa Creek at loc. T547p, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^00'38" E, 44^44'08" N)	Unit IIb, Middle Yezo Group	Cenomanian, Upper Cretaceous	(= Austiniceras nipponicum (Matsumoto, 1954)) / Remarks: The generic position of this species was transferred to Austiniceras by Matsumoto (1988, p. 103). / Reference: Matsumoto, T., 1988. Palaeont. Soc. Japan, Spec. Paps., No. 30, 1 - 179, figs. 1 - 88.
Puzosia subcorbarica	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 5, No. 2, p. 73, pl. 9, fig. 1a, b	Holotype: UMUT MM7639 (= GT. I - 370)	A point a little above the Ikushumbets gorge, Mikasa City, Sorachi Province, central Hokkaido	Middle Yezo Group	Albian, Lower Cretaceous
Romaniceras (?) otatumei	Matsumoto, Saito and Fukada, 1957	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 6, No. 1, p. 25, pl. 2, fig. 2a, b	Holotype: UMUT MM5663 (= GT. I - 3185)	Nutappomai, Kami - hobetsu area, Iburi Province, southern central Hokkaido (ca. 142^11'E, 42^55'N)	Middle Yezo Group	Turonian, Upper Cretaceous	(= Yubariceras otatsumei (Matsumoto, Saito and Fukada, 1957)) / Remarks: The generic posisiton of this species was transferred to Yubariceras by Matsumoto (1975, p. 144). / Reference: Matsumoto, T., 1975. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 22, No. 2, 99 - 163, pls. 11 - 23.
Ryugasella ryugasensis	Wright and Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 4, No. 2, p. 122, pl. 7, fig. 4a - d, text - fig. 13a - e	Holotype: UMUT MM6583 (= GT. I - 2862)	Loc. N18f, the Naibuchi Valley, Naibuchi (= Naiba) district, south Sakhalin, Russia (ca. 142^31'E, 47^20'N)	Unit Ray1, Ryugase Group	Campanian, Upper Cretaceous
Scalarites mihoensis	Wright and Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 4, No. 2, p. 118, pl. 7, fig. 1; text - fig. 2	Holotype: UMUT MM6564 (= GT. I - 2951a)	Loc. N27a, the Naibuchi Valley, Naibuchi (= Naiba) district, south Sakhalin, Russia (ca. 142^33'E, 47^20'N)	Unit Mh4, Miho Group	Upper Turonian - Coniacian, Upper Cretaceous
Scaphites (?) formosus	Yabe, 1910	Beitr. Palaeont. Geol. Oesterreich - Ungarns und des Orients, Vol. 23, p.166, pl. 15, fig. 8a,b	Holotype: UMUT MM7582 (GT. I - 291)	Kikumezawa Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^01'E, 43^13'N)	Upper Yezo Group	Cenonian, Upper Cretaceous	^[see printed matter]
Scaphites (?) gracilis	Yabe, 1910	Beitr. Palaeont. Geol. Oesterreich - Ungarns und des Orients, Vol.23, p.166, pl.15, fig.9	Holotype: UMUT MM7581 (= GT. I - 290)	Opiraushibets (=Obirashibe) River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido	Upper Yezo Group	Santonian, Upper Cretaceous	^[see printed matter]
Sciponoceras orientale	Matusmoto and Obata, 1963	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 18, pl. 6, fig. 1; text - figs. 34, 36, 39, 42, 45, 46	(Holotype: UMUT MM5672 (= GT. I - 3160a)( p. 18, pl. 6, fig. 1; text - figs. 42, 45)) / (Paratype: UMUT MM5673 (= GT. I - 3160b - d)( text - figs. 34, 36, 39, 46))	Loc. T610e, Saku - gawa (Sakkotan) Creek, a tributary of the Teshio River, Abeshinai - Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^04'27" E, 44^44'57" N)	Unit IIc (a), upper part of Middle Yezo Group	Lower part of Upper Gyliakian (= Lower Turonian), Upper Cretaceous
Teshioites ryugasensis	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 3, p. 174, pl. 36, fig. 1a, b	Holotype: UMUT MM5637 (= GT. I - 3488)	A river gravel at T472p, in the Abeshinai River, Saku - Abeshinai area, Nakagawa Town, Teshio Province, northern Hokkaido (142^01'27" E, 44^40'13" N)	Upper Yezo Group	Campanian, Upper Cretaceous
Teshioites teshioensis	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 3, p. 177, pl. 37, fig. 2a, b	Holotype: UMUT MM5643 (= GT. I - 3466)	A river gravel in the Kurumi - zawa Creek at loc. T908p, Saku - Abeshinai area, Nakagawa Town, Teshio Province, northern Hokkaido (142^04'18" E, 44^36'29" N)	Upper Yezo Group	Campanian, Upper Cretaceous
Tetragonites minimus	Shigeta, 1989	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 156, p. 336, fig. 13 - 4a, b	Holotype: UMUT MM18667 - 1	Loc. T1220, an outcrop in the Obirashibe River, at 100 m lower stream from the confluence with the Akanosawa Creek, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (141^59'16" E, 44^06'36" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Tetragonites popetensis	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 48, pl. 7, fig. 4a, b	Holotype: UMUT MM7460 (= GT. I - 207) (missing)	Sanushibe, Iburi Province, southern central Hokkaido (ca. 142^08'E, 42^52'N)	Upper Yezo Group	Senonian, Upper Cretaceous
Tetragonites terminus	Shigeta, 1989	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 156, p. 338, fig. 13 - 8a, b	Holotype: UMUT MM18635 - 1	Loc. H12d, Ichiyanagi - no - sawa, Tomiuchi area, Iburi Province, southern central Hokkaido (142^12'56" E, 42^46'06" N)	Hakobuchi Group	Lower Maastrichtian, Upper Cretaceous
Tragodesmoceroides subcostatus	Matsumoto, 1954	T. Matsumoto (editor): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 263, pl. 4, fig. 1a, b	Holotype: UMUT MM6718 (= GT. I - 3087)	Loc. T680, an outcrop in the lowest stream of the Abeshinai River, Abeshinai - Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (142^02'44" E, 44^44'02" N)	Saku Formation, Middle Yezo Group	Turonian, Upper Cretaceous
Turrilites Komotai	Yabe, 1904	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 20, No. 2, p. 7, pl. 1, fig. 1; pl. 2, fig. 1	Holotype: UMUT MM7458 (= GT. I - 232)	A marly nodule found below a cliff of the Ikushumbets River, directly above the coal mine, Mikasa City, Sorachi Province, central Hokkaido	Lower Acanthoceras - zone (sandstone) (= Mikasa Formation), Middle Yezo Group	Cenomanian, Upper Cretaceous
Yezoites planus var. gigas	Yabe, 1910	Beitr. Palaeont. Geol. Oesterreich - Ungarns und des Orients, Vol. 23, p. 169, pl. 15, fig.19	Holotype: UMUT MM7591 (= GT. I - 300)	Yubarigawa (= Yubari River), Oyubari area, Sorachi Province, central Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous	(= Yezoites puerculus (Jimbo, 1894), macroconch) [see printed matter]
Yokoyamaoceras jimboi	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 153, pl. 9, fig. 4a, b.	Holotype: UMUT MM7625a (= GT. I - 349a)	Saushi - sanushibe, Iburi Province, southern central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous
Yubariceras (Romaniceras?) japonicum	Matsumoto, Saito and Fukada, 1957	Mem. Fac. Sci., Kyushu Univ., Ser. D. (Geol.), Vol. 6, No. 1, p. 31, pl. 8, fig. 2; text - figs. 11, 12	Holotype: UMUT. MM7622 (= GT. I - 345)	Yubari River, Oyubari area, Sorachi Province,	central Middle Yezo Group	Middle to Upper Turonian, Upper Cretaceous
Yubariceras yubarense	Matsumoto, Saito and Fukada, 1957	Mem. Fac. Sci., Kyushu Univ., Ser. D. (Geol.), Vol. 6, No. 1, p. 27, pl. 8, fig. 1a, b, text - fig. 9	Holotype: UMUT MM7620 (= GT. I - 343)	Pankemoyuparo Creek, near the mouth of the Kaneobetsu Creek, Oyubari area, Sorachi Province, central Hokkaido	Fallen or floated nodule, derived from Middle Yezo Group	Middle and Upper Turonian, Upper Cretaceous
Zelandites mihoensis	Matsumoto, 1938	Jap. Jour. Geol. Geogr., Vol. 15, p. 144, pl. 14, fig. 2a - c	Holotype: UMUT MM9124 (= GT. I - 2509)	Loc. Ug.5 - 6 - p4, Uguizawa Creek, Naibuchi (= Naiba) area, south Sakhalin, Russia	Miho Group	Senonian, Upper Cretaceous
Pachydiscus haradai	Jimbo, 1894	Palaeont. Abh., N. F., Vol. 2, No. 3, p.175, pl. 2, fig.2, 2a	Lectotype: UMUT MM7498 (= GT. I - 100)	The Abeshinai River, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido	Upper Yezo Group	Upper Santonian - Lower Campanian, Upper Cretaceous	(= Eupachydiscus haradai (Jmibo, 1894)) / Remarks: The generic position of this species was transferred to Eupachydiscus by Matsumoto (1951, p. 22). / Reference: Matsumoto, T., 1951. Trans Proc. Palaeont. Soc. Japan, N.S., No. 1, 19 - 26. [see printed matter]
Scaphites puerculus	Jimbo, 1894	Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 183, pl. 5, fig. 4,4a	Lectotype: UMUT MM7520 (GT. I - 120)	The Pankemoyuparo Creek, a left tributary of the Yubari River, Sorachi Province, central Hokkaido (ca. 142^10'E, 42^59'N)	Middle Yezo Group	Turonian, Upper Cretaceous	(= Yezoites puerculus (Jimbo, 1894), microconch) / (Remarks: The generic position of this species was transferred to Yezoites by Yabe (1910, p. 170). Lectotype was designated by Matsumoto (1963, p. 44).) / (Remarks: The macroconch of this species is regarded as the form described under Yezoites planus Yabe, 1910 (see Davis et al., 1996, p. 506).) / (References: Matsumoto, T., Palaeont. Soc. Jap., 25th Anniv. Vol., 41 - 48, pls.60 - 68. Davis, R. A. et al., 1996. In: Ammonoid Paleobiology (N. H. Landman, Tanabe, K. and Davis, R. H. eds.), 463 - 539. Plenum, New York. Yabe, H., 1910. Beitr. Palaeont. Geol. des Oesterreich - Ungarns und des Orients, Vol. 23, 159 - 174, pl.15.) [see printed matter]

Yokosuka City Museum
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Anagaudryceras tetragonum	Matsumoto and Kanie, 1985	Sci. Rep. Yokosuka City Mus., No. 33, p. 29, pl. 5, figs. 9 - 11	Holotype: YCM. Ur 076001	Loc. U76A, Higashi Town, upper course of the Urokobetsu Creek, Urakawa area, Hidaka Province, southern - central Hokkaido (142^47'43" E, 42^10'26" N)	Hl, Hakobuchi Group	Maastrichtian, Upper Cretaceous
Pachydiscus (Pachydiscus) hidakaensis	Matsumoto and Kanie, 1979	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 2, p. 64, pl.13, fig. 1	Holotype: YCM. Ur 133001	Loc. U133, Shiroizumi, Urakawa Town, Hidaka Province, southern central Hokkaido (142^49'11" E, 42^10'49" N)	Unit H2 (silty sandstone), Hakaobuchi Group	Senonian, Upper Cretaceous

Toyohashi Museum of Natural History
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Yokoyamaoceras yokoii	Matsumoto, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 100, pl. 22, fig. 3; text - fig. 11	Holotype: TMNH 501 [=TY66], Natural History Museum of Toyohashi	Sato - no - sawa Creek, a tributary of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (ca. 142^02'E, 44^02'30" N)	Unit Mj, Middle Yezo Group	Middle Turonian, Upper Cretaceous

Osaka Museum of Natural History
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Gaudryceras izumiense	Matsumoto and Morozumi, 1980	Bull. Osaka Mus. Nat. Hist., No. 33, p. 12, pl. 11, fig. 1; pl. 12, fig. 1; pl. 13, fig. 1	Holotype : OMNH. M1125 (pl. 11, fig. 1) / Paratypes: MT54 (pl. 12, fig. 1), MT 82 (pl. 13, fig. 1)(M. Tani's private collection)	Loc. 7, Sobura, Kaizuka City, Osaka Prefecture, west Honshu (ca. 135^25'E, 34^22'N)	Horizon B5, Azenotani Formation, Izumi Group	Maastrichtian, Upper Cretaceous
Pachydiscus (Pachydiscus) awajiensis	Morozumi, 1985	Bull. Osaka Mus. Nat. Hist., No. 39, p. 18, pl. 2, fig. 1a, b; pl. 3, figs. 1, 2; pl. 4, fig. 2; text - fig. 4	Holotype: OMNH. M2205 (pl. 2, fig. 1a, b; pl. 3, fig. 2; text - fig. 4) / Paratypes: OMNH. M2216 (pl. 3, fig. 1a, b), OMNH. M2199 (pl. 4, fig. 2); KS830417 (pl. 2, fig. 2a - c), K. Sakakibara' s private collection	Loc. Aw. 7, Nagata, Midori Town, Awaji Island, Hyogo Prefecture, west Honshu (134^47'55" E, 34^19'19" N)	Seidan Formation, Izumi Group	Uppermost Campanian or Lowest Maastrichtian, Upper Cretaceous
Patagiosites laevis	Morozumi, 1985	Bull. Osaka Mus. Nat. Hist., No. 39, p. 23, pl. 6, fig. 1a - c ; pl. 7, fig. 2	Holotype: JM386, J. Miyamoto's private collection (pl. 6, fig. 1a - c) / Paratype: SN01, S. Nanko's private collection (pl. 7, fig. 2)	Loc. Aw. 1, Kiba, Seidan Town, Awaji Island, Hyogo Prefecture, west Honshu (134^40'05" E, 34^17'05" N)	Seidan Formation, Izumi Group	Upper Campanian, Upper Cretaceous

Osaka City University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Cheloniceras shimizui

Tokushima Prefectual Museum
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Libycoceras awajiense	Matsumoto and Morozumi, 1988	Trans. Proc. Palaeont. Soc. Jap., N. S., No. 150, p. 466, figs. 1A - C, 2	Holotype: M. Takada's private collection	Loc. Aw 7 (Nagata), Nagata, Midori Town, Mihara County, Awaji Island, Hyogo Prefecture, west Honshu (134^48'03" E, 34^19'14" N)	Seidan Formation, Izumi Group	Upper Campanian, Upper Cretaceous

Kyushu University
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Acanthoceras takahashii	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., ser. D (Geol.), Vol. 22, No. 2, p. 126, pl. 16, fig. 1	Holotype: GK. H5605	Upper reaches of the Kami - ichinosawa, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (132^3'30" E, 43^16'38" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Ainoceras kamuy	Matsumoto and Kanie, 1967	Mem. Fac. Sci., Kyushu Univ., ser. D (Geol.), Vol. 18, No. 2, p. 351, pl. 20, figs. 1 - 3 & 5; text - fig. 3	Holotype: GK. H5575 (pl. 20, fig. 1; text - fig. 3) / Paratypes: GK. H5577(pl. 20, fig. 2; text - fig. 3), GK. H5581(pl. 20, fig. 3), GK H5580(pl. 20, fig. 5)	3rd tributary of Nio - no - sawa, Saku area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^00'38" E, 44^46'25" N)	Osousyunai Formation, Upper Yezo Group	Approximately Lower Campanian, Upper Cretaceous
Anagaudryceras howarthi	Matsumoto, 1995	Palaeont. Soc. Japan, Spec. Paps., No. 35, p. 46, fig. 22	Holotype: GK. H1145	Loc. Y213p, Oyubari (Shiyubari) area, Yubari City, Sorachi Province, central Hokkaido (142^10'13" E, 43^10'20" N)	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Anagaudryceras matsumotoi	Morozumi, 1985	Bull. Osaka City Mus. Nat. Hist., No. 39, p. 29, pl. 9, fig. 1a - d; text - fig. 7	Holotype: GK. H6882	Loc. Aw. 15, Haraikawa, Nandan Town, Awaji Island, Hyogo Prefecture, southwest Japan (132^48'E, 34^12'N)	Shimonada Formation, Izumi Group	Lower Maastrichtian, Upper Cretaceous
Anagaudryceras nanum	Matsumoto, 1985	Sci. Rep. Yokosuka City Mus., No. 33, p. 25, pl. 5, figs. 1 - 4	Holotype: GK. H3124	Loc. U45, Urakawa area, Hidaka Province, southern - central Hokkaido (142^48'05" E, 42^10'45" N)	Ur4b, Upper Yezo Group	Lower Campanian, Upper Cretaceous
Australiceras asiaticum	Matsumoto, 1947	Sci. Rep. Kyushu Univ., Geol. Ser., Vol. 2, No. 1, p. 13, pl. 1, fig. 1; text - fig. 1	Lectotype: GK. H8301	Loc. Yu - 103, Yuasa - Fujinami, Yuasa area, Wakayama Prefecture, west Honshu	Lower part of Arida Formation	Lower Barremian, Lower Cretaceous	(= Crioceratites (Paracrioceras) asiaticum (Matsumoto, 1947)) / Remarks: The generic position of this species was transferred to Crioceratites by Matsukawa and Obata (1993, p. 251), who also designated this specimen as the lectotype. / Reference: Matsukawa, M. and Obata, I., 1993. Palaeontology, Vol. 36, No. 2, 249 - 266, pls. 1 - 3.
Baculites chicoensis yezoensis	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 70, pl. 25, figs. 1a, b, 2a, b, 3a - d, 4a - d, 5a - c	Holotype: GK. H5975 (pl. 25, fig. 1a, 1b) Paratypes: MNH. 130 (p. 70, list only), MNH. 133 (fig. 4a - d; text - fig. 11B, C), 134 (fig. 3a - d), 135 (fig. 5a - c), 137 (figs. 2a, b), 138 (p. 70, list only)(T. Miyauchi' s collection)	Kiyohama - II, Soya Peninsula, northern Hokkaido (141^54'11" E, 43^30'35" N)	Unit F (Fukiyose Bed), Upper Yezo Group	Lower Campanian, Upper Cretaceous
Baculites kotanii	Matsumoto, Hashimoto and Furuichi, 1980	Proc. Japan Acad., Vol. 56, Ser. B, p. 408, fig. 1	Holotype: GLKU. IZ - 80001 (Geological Laboratory, Kagawa University)	1130 m south of Gesho, Miki Town, Kita County, Kagawa Prefecture, Shikoku (ca. 134^07'55" E, 34^09'28" N)	Basal member, Izumu Group	Campanian, Upper Cretaceous
Baculites princeps	Matsumoto and Obata, 1963	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 55, pl. 13, fig. 1; text - figs. 138, 139	Holotype: GK. H4454 (pl. 13, fig. 1; text - fig. 138) / Paratypes: GK. H4453 (p. 55, list only), GK. H4455 (p. 55, list only), GK. H4456 (text - fig. 139), GK. H4457 - 4460 (p. 55, list only)	Loc. Y420, Kotodono - sawa Creek, a tributary of the Haboro River, Haboro Town, northwestern Hokkaido (141^59'00" E, 44^15'38" N)	Upper part of member U3 of K. Tanaka, Upper Yezo Group	Upper Santonian, Upper Cretaceous
Baculites pseudobaculus	Matsumoto and Obata, 1963	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 68, pl. 14, fig. 3; text - figs. 166, 167	Holotype: GK. H4803 (pl. 14, fig. 3; text - fig. 166) / Paratype: GK. H4803 (text - fig. 167), GK. H4804, GK.	H4809, GK. H5239, GK. H5240 (list only)	Loc. CK54, Sankebetsu Creek, branch of the Chikubetsu River, Teshio Province, northwestern Hokkaido (ca. 141^55'E, 44^20'N)	Member B2, Upper Yezo Group	Approximately Lower Santonian, Upper Cretaceous
Baculites tanakae	Matsumoto and Obata, 1963	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 51, pl. 17, fig. 2; text - fig. 115	Holotype: GK. H4288 (pl. 17, fig. 2)(pl. 17, fig. 2) / Paratypes: GK. H4230 (text - fig.115), GK. H4229, GK. H4231 - GK. H4234, GK. H4237 - GK. H 4244, GK. H4246 - GK. H4253 (p. 51, list only)	Loc. Sk60 [=Y339], along the main stream of the Haboro River, Haboro area, northwestern Hokkaido	Member U6, uppermost part of Upper Yezo Group	Approximately Campanian, Upper Cretaceous
Baculites uedae	Matsumoto and Obata, 1963	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 40, pl. 20, fig. 6; text - fig. 91	Holotype: GK. H4794	Loc. CK64, main stream of the Detofutamata River, Chikubetsu area, northwestern Hokkaido (141^57'59" E, 44^20'02" N)	Member B1, Upper Yezo Group	Campanian, Upper Cretaceous
Baculites yokoyamai	Tokunaga and Shimizu, 1926	Mem. Fac. Sci., Kyushu Univ., Ser. D, Geol., Vol. 13, No. 1, p. 30, pl. 10, fig. 5	Neotype: GK. H4580	Loc. IK1111a, an outcrop in the lower course of the Bannosawa Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (now under the Katsurazawa Lake) (142^00'31" E, 43^13'34" N)	Upper Yezo Group	Coniacian, Upper Cretaceous	Remarks: Neotype was designated by Matsumoto and Obata (1963, p. 30 - 31). / Reference: Matsumoto, T. and Obata, I., 1963. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 13, No. 2, 1 - 116, pls. 1 - 27.
Barroisiceras (Basseoceras) inornatum	Matsumoto, 1969	Mem. Fac. Sci. Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 3, p. 303, pl. 39 [27], fig. 1; text - figs. 3 - 4	Holotype: GK. H5460 [= T. Muramoto' s Collection no. P5 - 6234]	Gono - sawa Creek, Pombets, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 141^59'E, 43^14'N)	Zone of Inoceramus uwajimensis, Upper Yezo Group	Coniacian, Upper Cretaceous
Bhimaites ? kawai	Matsumoto, 1997	Paleont. Res., Vol. 1, No. 2, p. 150, figs. 1 - 3	Holotype: GK. H8490 (= YKC 061111)	Loc. R 813, River Sounnai, Soeushinai area, northwestern Hokkaido (142^03'57" E, 44^12'00" N)	Uppermost part of Member My2, Middle Yezo Group	Upper part of the Upper Albian, Upper Cretaceous
Bhimaites takahashii	Matsumoto, 1988	Palaeont. Soc. Japan, Special Paps., No. 30, p. 107, fig. 47	Holotype: GK. H8094	Kamikinembets, Oyubari (Shiyubari) area, Yubari City, Sorachi Province, central	Saku Formation, Midle Yezo Group	Middle Turonian, Upper Cretaceous
Brewericeras enorme	Matsumoto, 1980	Trans. Proc. Palaeont. Soc. Japan, New Ser., No. 118, p. 331, pl. 37, fig. 2	Holotype: GK. H6907	Loc. C, at the altitude of about 200 m on an ascending path from Miyaji to Mt. Joguzan, Kumamoto Prefecture, Kyushu	Middle Member of Yatsushiro Formation	Albian, Lower Cretaceous
Canadoceras compressum	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 310, pl. 20, fig. 1	Holotype: GK. H3830	Loc. H12d6, Hetonai area, Iburi Province, southern central Hokkaido (142^12'57" E, 42^46'06" N)	Hakobuchi Group	Lower Maastrichitian, Upper Cretaceous
Canadoceras minimum	Matsumoto and Miyauchi, 1984	Palaeont.Soc. Japan, Special Paps., No. 27, p. 50, pl. 19, fig. 1a - c; pl. 21, figs. 1a - d, 2a - c	Holotype: GK. H5976 (pl. 20, fig. 1a - c) Paratypes: GK. H5977 (pl. 19, fig. 1a - c), MNH. 142(pl. 21, fig. 2a - c), H4233 (pl. 21, fig. 1a - d)(T. Miyauchi's private collection)	Loc. Kiyohama - I, Soya harbour, Soya Peninsula, northern Hokkaido (141^53'11" E, 45^29'41" N)	Unit F (=Fukiyose Bed), Upper Yezo Group	Lower Campanian, Upper Cretaceous
Canadoceras mysticum	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 307, pl. 19, fig. 1a - c	Holotype: GK. H5184	Locality uncertain, Teshio Province, northern Hokkaido	Yezo Group	Upper Cretaceous
Cobbanoceras tanakai	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 3, p. 220, pl. 37 [20], fig. 3; pl. 38 [21], fig. 1; text - fig. 4 [44] - 5 [45]	Holotype: GK. H5522	Loc. NH279a, the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwest Hokkaido	Unit Uf, Upper Yezo Group	Lower Santonian, Upper Cretaceous
Damesites ainuanus	Matsumoto, 1957	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 27, p. 86, pl. 15, fig. 1a - d	Holotype: GK. H4198	Loc. Ik 2013d, Pombetsu River, Mikasa City, Ishikari Province, central Hokkaido (141^58'39" E, 43^16'26" N)	Middle Yezo Group	Turonian, Upper Cretaceous
Damesites damesi intermedia	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, Jap. Soc. Prom. Sci., Tokyo, p. 270, pl. 6, fig. 4a, b	Holotype: GK. H3269	Loc. U513, Urakawa area, Hidaka Province, southern central Hokkaido (142^44'48" E, 42^10'36" N)	Unit Ur2 B' , Upper Yezo Group	Coniacian, Upper Cretaceous	[see printed matter]
Damesites hetonaiensis	Matsumoto, 1954	T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands. Jap. Soc. Prom. Sci., Tokyo, p. 271, pl. 6, fig. 1a - c	Holotype: GK H3836	Loc. H12d3, southern side of the Mukawa River, Hetonai (= Tomiuchi) area, Iburi Province, southern central Hokkaido (142^12'57" E, 42^46'06" N)	Member IVa, upper part of the Hakobuchi Group	Lower Maastrichtian, Upper Cretaceous
Damesites laticarinatus	Saito and Matsumoto, 1956	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 22, p. 192, text - fig. 1	Holotype: repository undescribed	The Ikushumbets Valley, Mikasa City, Ishikari Province, central Hokkaido (ca. 141^59'E, 43^15'N)	Mikasa Formation, Middle Yezo Group	Cenomanian, Upper Cretaceous
Defordiceras (?) japonicum	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 22, No. 2, p. 301, pl. 47 (51), fig. 2	Holotype: GK. H5638	Loc. R371, Sakasa - gawa Creek, a tributary of the Haboro River, Haboro area, Tomamae County, northwestern Hokkaido (141^58'59" E, 44^16'18" N)	Unit B1 or A, Upper Yezo Group	Lower Santonian, Upper Cretaceous
Eodouvilleiceras kumaense	Matsumoto and Tamura, 1982	Proc. Jap. Acad., Vol. 58, Ser. B, p. 149, fig. 2A	Holotype: GK. H6904	Loc. Km 4043B, right side of Nakazono River, a tributary to the River Kuma, Kuma area, about 1700m SE of Tomochi, Kumamoto Prefecture, west Kyushu (130^39'39" E, 32^15'31" N)	Lower part of Tomochi Formation	Uppermost Aptian, Lower Cretaceous
Eogunnarites pentagonus	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 74, pl. 16, figs. 1, 2	Holotype: TTC. 641008 - A (pl. 16, fig. 1), Takemi Takahashi's private collection (pl. 16, fig.1) / Paratype: TTC. 641088 (pl. 16, fig. 2), Takemi Takahashi's private collection	7th branch of Kami - ichi - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (142^03'04" E, 43^16'36" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Eogunnarites sanadai	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 78, pl. 18, fig. 2	Holotype: TTC. 391028, Takemi Takahashi's private collection	Loc. IK1101, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (142^00'15" E, 43^13'34" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Eomadrasites nipponicus	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 135, pl. 10, fig. 3	Holotype: GK. H1559	A river gravel at loc. T233p, Shibunnai - toge - no - sawa Creek, Saku (Abeshinai) area, Nakagawa Town, northern Hokkaido (141^04'52" E, 44^39'39" N)	Unit IIb, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Eomadrasites robustus	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 85, pl. 19, fig. 4	Holotype: TTC. 420821, Takemi Takahashi's private collection	Loc. IK1102, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Eubostrychoceras densicostatum	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 332, pl. 52, fig. 2	Holotype: M 90, T. Muramoto' s private collection	Loc. Ik 1172, near "9 km point" of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (142^00'10" E, 43^13'39" N)	Upper Yezo Group	Santonian, Upper Cretaceous
Eubostrychoceras muramotoi	Matsumoto, 1967	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 18, No. 2, p. 335, pl. 19, fig. 1	Holotype: No. 6209, T. Muramoto's private collection	Loc. Ik 2107 p1, Pombets Go - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'00" E, 43^14'19" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Euomphaloceras asura	Matsumoto and Muramoto, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 2, p. 277, pl. 35, fig. 1; pl. 36, fig. 1; text - fig. 7	Holotype: GK. H5602	Loc. T 1165, Saku - gakko - no - sawa Creek, Abeshinai - Saku area, Nakagawa Town, northern Hokkaido (142^01'06" E, 44^44'14" N)	Unit IIb - c, Middle Yezo Group	Upper Cenomanian, Upper Cretaceous
Forresteria (Forresteria) armata	Matsumoto, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 3, p. 313, pl. 41 [29], fig. 1; text - fig. 8	Holotype: GK. H5621	A fallen nodule at Loc. Ik 2144p, Pombets Gono - sawa Creek, Pombets, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^58'31" E, 43^17'30" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Forresteria (Muramotoa) muramotoi	Matsumoto, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 3, p. 320, pl. 43 [31], fig. 1	Holotype: GK. H5620	A fallen nodule at loc. Ik2150p, Pombets Gono - sawa Creek, Pombets, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^58'34" E, 43^17'32" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Forresteria (Muramotoa) yezoensis	Matsumoto, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 3, p. 317, pl. 42 [30], fig. 2; text - fig. 10	Holotype: GK. H5462	A fallen nodule at loc. Ik2155pl, Pombets Gono - sawa Creek, Pombets, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^58'35" E, 43^17'35" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Gaudryceras hamanakense	Matsumoto and Yoshida, 1979	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 114, p. 68, pl. 10, figs. 1, 2; pl. 11, figs. 1, 2	Holotype: GK. H5873 (pl. 10, fig. 1) / Paratypes: YU. C7615 (S. Yoshida Collection) (pl. 10, fig. 2; pl. 11, fig. 2), TKD. 30481 (pl. 10, fig. 3), TKD. 30480 (pl. 11, fig. 1)	Loc. KU1056A, Ponporoto, Hamanaka Town, Akkeshi County, eastern Hokkaido (145^09'46" E, 43^08'43" N)	Lower part of At 2, Akkeshi Formation, Nemuro Group	Upper Maastrichtian, Upper Cretaceous
Gaudryceras mamiyai	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 55, pl. 24, fig. 1 - d	Holotype: GK. H5974, Paratypes: MNH. 185 (pl. 24, fig. 1 - d), MNH. 186 (p. 55, list only) ; T. Miyauchi's private collection	Kiyohama - II, Soya Peninsula, northern Hokkaido (141^54'13" E, 45^30'35" N)	Unit H, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Gaudryceras tombetsensis	Matsumoto, 1984	Sci. Rep. Yokosuka City Mus., No. 32, p. 2, pl. 1, figs. 1 - 2	Holotype: GK. H5991	Lower course of the Kikusuigawa Creek, a tributary of the Tombetsu River, near Matsuneshiri, Esashi County, northern Hokkaido (142^12'52" E, 44^55'50" N)	Member H3 or possibly Member H4, Hakobuchi Group	Maastrichitian, Upper Cretaceous
Gaudryceras venustum	Matsumoto, 1984	Sci. Rep. Yokosuka City Mus., No. 32, p. 5, pl. 3, figs. 1 - 2	Holotype: GK. H5994	Loc.H311a, Kiusu, Nakahobetsu, Yufutu County, southern central Hokkaido (142^09'17" E, 42^48'31" N)	Bed IVc5, upper part of the Fukaushi Formation, Hakobuchi Group	Upper Maastrichitian, Upper Cretaceous
Haboroceras haboroense	Toshimitsu, 1988	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 2, p. 151, pl. 29, fig. 3a - e	Holotype: GK. H8216	Loc. RH1200f, a road cut on the Sakasagawa forest road, Haboro area, Tomamae County, northwestern Hokkaido (141^58'22" E, 44^16'07" N)	Middle part of the Upper Hoborogawa Formation, Upper Yezo Group	Upper Santonian - Lower Campanian, Upper Cretaceous
Holcodiscoides aquarius	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 66, pl. 14, fig. 1	Holotype: TTC. 380524, Takemi Takahashi's private collection	Suido - no - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^59'50" E, 43^15'30" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Holcodiscoides pusillus	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 69, pl. 14, figs. 5 - 8	Holotype: TTC. 370427F, Takemi Takahashi's private collection (pl. 14, fig. 4) / Paratypes: TTC. 400513 (pl. 14, fig. 6), TTC. 370427G (pl. 14, fig. 7), TTC. 370427H (pl. 14, fig. 8), Takemi Takahashi's private collection	Loc. IK1100, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Hoplitoplacenticeras fugen	Matsumoto, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 25, pl. 8, fig. 5a, b	Holotype: GK. H5960	Loc. E 33, Wembets (= Embetsu) - Rubeshibe River, Embetsu Town, northern Hokkaido (141^58'49" E, 44^41'50" N)	Unit Y, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Hoplitoplacenticeras monju	Matsumoto, 1982	Proc. Jap. Acad., Vol. 58, Ser. B, p. 249, fig.1a - c	Holotype: GK. H5933	Loc. E 33, Embetsu - Rubeshube River, Embestu Town, Teshio Province, northwestern Hokkaido (141^58'49" E, 44^ 41' 50" N)	Hakobuchi Group	Upper Campanian, Upper Cretaceous
Hourcquia pacifica	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 20, No. 2, p. 311, pl. 49, fig. 2; text - fig. 4	Holotype: GK. H5203	Near the colliery of Kawakami, south Sakhalin, Russia	Possibly Miho Group	Possibly Upper Turonian, Upper Cretaceous
Hypophylloceras yeharai	Nakai and Matsumoto, 1968	Jour. Sci. Hiroshima Univ., Ser. C, Vol. 6, No. 1, p. 4, pl. 1, figs. 1 - 3	Holotype: GK. H6842 (pl. 1, fig. 1) / Paratypes: GK. H6843a (pl. 1, fig. 2), GK. H6843b (pl. 1, fig. 3)	Loc. Kt. 1017, about 500 m southwest of Kiwada, Katsuura Town, Tokushima Prefecture, Shikoku (134^26'44" E, 33^55'37" N)	Upper part of Fujikawa Formation	Upper Albian, Lower Cretaceous
Hypostlingoceras japonicum	Matsumoto and Takahashi, 2000	Paleont. Res., Vol. 4, No. 4, p. 269, figs. 7A, B, 8A - E	Holotype: GK. H8542	Ganseki - zawa Creek, the 8th branch of the Kami - ichino - sawa Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^02'53" E, 43^16'57" N)	Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Hypostlingoceras mikasaense	Matsumoto and Takahashi, 2000	Paleont. Res., Vol. 4, No. 4, p. 271, fig. 11A - E	Holotype: GK. H8540	Northeastern rivulet ( "Migimara" ) of the Ganseki - zawa Creek, the 8th branch of the Kami - ichino - sawa Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (142^02'53" E, 43^16'57" N)	Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Ishikariceras binodosum	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 3, p. 236, pl. 43 [26], fig. 1; text - figs. 17 [57] - 18 [58]	Holotype: GK. H5576	Upper reaches of Ichi - no - sawa Creek, branch of the Ikushumbets River, Ishikari Province, central Hokkaido (ca. 142^02'30" E, 43^16'00" N)	Upper Yezo Group (zone of Inoceramus uwajimensis)	Coniacian, Upper Cretaceous
Kazanskyella (?) japonica	Matsumoto, 1952	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 3, p. 182, pl. 13, fig. 2a, b	Holotype: GK. H4022	Taru, Kamibun Villege ?, Takaoka district, Kochi Prefecture, Shikoku	Susaki formation ?	Lower Cretaceous
Kitchinites (Neopuzosia) haboroensis	Matsumoto and Inoma, 1972	Trans. Proc. Palaeont. Soc. Jap, N. S., No. 87, p. 384, pl. 47, fig. 5	Holotype: GK. H5654	Loc. IA - 1564, Haboro dome, Haboro area, Tomamae County, northwest Hokkaido	Unit B of Upper Yezo Group	Santonian, Upper Cretaceous
Kossmatella (Murphyella) enigma	Matsumoto, Muramoto and Takahashi, 1972	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 21, No. 2, p. 210, pl.33, figs. 1 - 3	Holotype: GK. H5667 (pl. 33, fig. 1) / Paratypes: GK. H5688 (pl. 33, fig. 2), GK. H5673 (pl. 33, fig. 3)	Loc. Ik 1100, Ikushumbets, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Lower part of member IIb, Mikasa Formation (Zone of Mantelliceras japonicum)	Lower Cenomanian, Upper Cretaceous
Kossmaticeras flexuosum	Matsumoto, 1991	Palaeont. Soc. Jap., Spec. Paps., No. 33, p. 96, pl. 22, fig. 2	Holotype: GK. H8342	Nutapomanai Creek, Hobetsu area, Iburi Province, southern - central Hokkaido (ca. 142^00'E, 42^55'N)	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Lymaniceras planulatum	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 1, p. 31, pl. 7, figs. 1 - 5; pl. 8, figs. 1 - 3, 6 - 8; text - figs. 11 - 12, 14, 15; text - fig. 10	Holotype: GK. H5430 (pl. 7, fig. 1; text - fig. 10) / Paratypes: GK. H5465 (pl. 7, fig. 2), GK. H5467a (pl. 7, fig. 3; text - fig. 12), GK. H5476 (pl. 7, fig. 4), GK. H5474 (pl. 7, fig. 5; text - fig. 11), GK. H5466 (pl. 8, fig. 1), GK H5429a (pl. 8, fig. 2; text - fig. 14), GK H5429b (pl. 8, fig. 3), GK H5528 (pl. 8, fig. 6; text - fig. 15), GK. H5468 (pl. 8, fig. 7), GK. H5472 (pl. 8, fig. 8), GK. H5427 (p. 31; listed only), GK. H5467b (p. 31; listed only)	Loc. Ik2012c, an outcrop in the lower course of the Pombetsu River, a tribuary of Ikushumbets, Mikasa City, central Hokkaido (141^58'42" E, 43^16'25" N)	Unit IIIa, Upper Yezo Group (zone of Inoceramus tenuistriatus - I. teshioensis)	Uppermost Turonian, Upper Cretaceous
Maccarthyites mikasaensis	Matsumoto, Takahashi and Sanada, 1991	Palaeont. Soc. Jap., Spec. Paps., No. 33, p. 55, pl. 10, figs. 1 - 3; text - fig. 8	Holotype: TTC. 380415, Takemi Takahashi's private collection (pl. 10, figs. 1, 2; text - fig. 8) / Paratype: TTC. 370600, Takemi Takahashi's private collection (pl. 10, fig. 3)	Loc. IK1054, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'51" E, 43^14'28" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Madagascarites ryu	Matsumoto and Muramoto, 1967	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 18, No. 2, p. 362, pl. 19, fig. 3; pl. 22, fig. 1; pl. 23, fig. 3	Holotype: No. 9100A, Tatsuo Muramoto's private collection (pl. 22, fig. 1; pl. 23, fig. 3) / Paratypes: GK. H5449a, b (= Tatsuo Muramoto Coll. No. 9100c)(pl. 19, fig. 3), No. 9100B, Tatsuo Muramoto's private collection (pl. 23, fig. 1)	Loc. Ik967, an outcrop along the main stream of the Ikushumbets River, Mikasa City, central Hokkaido (142^00'39" E, 43^14'14" N)	Zone of Reesidites minimus, Upper Yezo Group	Uppermost Turonian, Upper Cretaceous	(= Ryuella ryu (Matsumoto and Muramoto, 1967)) / Remarks: The generic position of this species was transferred to Ryuella by Klinger and Kennedy (1997, p. 238). / Reference: Klinger, H. C. and Kennedy, W. J., 1997. Ann. South African Mus., Vol. 105, No. 3, 227 - 247, 17 figs.
Mantelliceras japonicum	Matsumoto, Muramoto and Takahashi, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 6, No. 1, p. 253, pl. 25, figs. 1, 2; pl. 26, figs. 1, 2; pl. 27, figs. 1, 2; text - figs. 1, 2	Holotype: GK. H5428 [Mu. 12716] (pl. 25, fig. 1; pl. 26, fig. 1; text - figs. 1 - 2) / Paratypes: GK. H5426 (pl. 25, fig. 2; pl. 26, fig. 2), GK. H5427 (pl. 27, fig. 1), GK. H5609 (pl. 27, fig. 2), GK. H5559 (p. 253, listed only), GK. H5560 (p. 253, listed only)	Loc. Ik1100, an outcrop along the Ikushumbets River, Mikasa City, central Hokkaido (141^59'30" E, 43^15'00" N)	Lower part of unit IIb, Mikasa Formation	Lower Cenomanian, Upper Cretaceous
Marshallites hayashii
Marshallites hendersoni	Matsumoto and Takahashi, 1991	Palaeont. Soc. Jap., Spec. Paps., No. 33, p. 30, pl. 3, fig. 4	Holotype: TTC. 450422, Takemi Takahashi's private collection	Loc. IK1103, an outcrop along the Ikushumbets River, Ikushumbets area, Mikasa City, central Hokkaido (141^59'58" E, 43^14'35" N)	Member IIb, Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Marshallites involutus	Matsumoto and Saito, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 38, pl. 6, fig. 1	Holotype: GK. H8338	Loc. Kurumi - zawa Creek, Saku (Abeshinai) area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^04'30" E, 44^36'56" N)	Shibunnai - toge Formation of Shimizu (1932), Middle Yezo Group	Cenomanian, Upper Cretaceous
Marshallites olcostephanoides	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 129, pl. 8, fig. 5a, b	Holotype : GK. H1552	Loc. Y140d, Hikage - no - sawa Creek, a tributary of the Yubari River, Oyubari area, Sorachi Province, central Hokkaido (142^09'58" E, 43^09'23" N)	Member IIm, Middle Yezo Group	Cenomanian, Upper Cretaceous
Marshallites rotundatus	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 43, pl. 7, figs. 1 - 2	Holotype: GK. H8268	Loc. IK1066p, a rollen nodule at the entrance of the Torii - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^48'38" E, 43^15'02" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Marshallites virgatoides	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 36, pl. 5, figs. 4, 5	Holotype: TTC. 490224(fig. 5), Takemi Takahashi's private collection / Paratype: TTC. 350900(fig. 4), Takemi Takahashi's private collection	Loc. IK1103, an outcrop along the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Member IIb, Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Menuites pusillus	Matsumoto, 1955	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 3, p. 165, pl. 32, fig. 1a - d	Holotype: GK. H3382	Loc. U505, Wave - cut bench on the coast of Ikandai, Urakawa area, Hidaka Province, south - central Hokkaido (142^44'23" E, 42^10'32" N)	Unit Ur2 B' , Upper Yezo Group	Upper Santonian, Upper Cretaceous	[see printed matter]
Menuites sanadai	Matsumoto, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 17, pl. 5, fig. 1a - d	Holotype: GK. H5969	Loc. T 5011, Uttsu River, Teshio Mountains, northern Hokkaido	Hakobuchi Group	Upper Campanian, Upper Cretaceous
Mesopuzosia pacifica	Matsumoto, 1954	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 82, pl. 15, fig. 1a, b	Holotype: GK. H1257	Loc. Y216p1 in the Shiyubari Valley, Oyubari area, Sorachi Province, central Hokkaido (142^10'09" E, 43^10'29" N)	Saku Formation, Middle Yezo Group	Turonian, Upper Cretaceous
Mesoturrilites pombetsensis
Microdesmoceras tetragonum	Matsumoto and Muramoto, 1972	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 87, p. 378, pl. 47, fig. 1	Holotype: GK. H5653	Loc. Ik 1101 on the northern wall of the V - shaped valley of the Ikushumbets, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Lower part of unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Mikasaites orbicularis	Matsumoto, 1956	Jap. Jour. Geol. Geogr., Vol. 27, p. 175, pl. 16, figs. 1a - d, 2a - c	Holotype: GK. H4202 (pl. 16, fig. 1a - d) / Paratype: No. 1458, T. & K. Muramoto's private collection (pl. 16, fig. 2a - c)	Loc. Ik1265b, Tori - zawa Creek, Sorachi Province, central Hokkaido (141^59'05" E, 43^14'33" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Miogaudryceras yokoii	Matsumoto, 1995	Palaeont. Soc. Japan, Spec. Paps., No. 35, p. 28, figs. 14, 15	Holotype: GK. H8411	Loc. KY 740 in the upper stream of the Suribachi - zawa Creek, Horokanai area, Uryu, County, northwestern Hokkaido (ca. 142^04'06" E, 44^13'34" N)	Member My3, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Neostlingoceras asiaticum	Matsumoto and Takahashi, 2000	Paleont. Res., Vol. 4, No. 4, p. 266, figs. 5A - I, 6	Holotype: GK. H8536 (fig. 5A - C) / Paratypes: GK. H8537 (figs. 5D - F,6), GK. H3538 (fig. 5G - I)	Loc. 1103, an outcrop along the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Neostlingoceras cobbani	Matsumoto and Takahashi, 2000	Paleont. Res., Vol. 4, No. 4, p. 267, fig. 5J - L	Holotype: GK. H8535	Loc. 1103, an outcrop along the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Niceforoceras (?) japonicum	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 16, No. 1, p. 71, pl. 11, fig. 1; text - fig. 40	Holotype: GK H5495	Loc. JPE. 12, the Kumaoi - zawa Creek, a right tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (ca. 142^04'33" E, 43^14'27" N)	Upper Yezo Group	Coniacian?, Upper Cretaceous
Nipponites bacchus	Matsumoto and Muramoto, 1967	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 18, No. 2, p. 365, pl. 23, fig. 5; pl. 24, fig. 1	Holotype: GK. H5444 [= Muramoto Coll. No. 122]	Loc. Ik2013, an outcrop in the lower course of the Pombets River, a tributary of Ikushumbets River, Mikasa City, Sarachi Province, central Hokkaido (141^59'39" E, 43^16'26" N)	Upper Yezo Group	Upper Turonian, Upper Cretaceous
Nostoceras hetonaiense	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 23, No. 3, p. 322, pl. 54, fig. 2; pl. 55, fig. 1	Holotype: GK. H5798a	Loc. H1091p, Tonai - no - sawa Creek, Tomiuchi (Hetonai) area, Iburi Province, southern central Hokkaido	Upper part of Hakobuchi Group	Lower Maestrichtian, Upper Cretaceous
Nowakites yubarensis	Matsumoto, 1979	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 113, p. 38, pl. 5, fig. 2 - 3	Holotype: GK. H5872	Loc. Yb 15, an outcrop in the Ponhorokabetsu River, Yubari City, Sorachi Province, central Hokkaido (141^57'39" E, 43^04'20" N)	Unit Mk3, Mikasa Formation	Middle Turonian, Upper Cretaceous
Obiraceras ornatum	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 22, No. 2, p.151, pl. 23, fig.1	Holotype: GK. H5689	Sato - no - sawa Creek (Migi - ichi - no - sawa, Migi - sawa), a tributary of the Kami - kinembetsu River, a major branch of the Obirashibe River, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (142^02'08" E, 44^02'27" N)	Middle Yezo Group	Upper Turonian, Upper Cretaceous
Otoscaphites (Hyposcaphites) matsumotoi	Tanabe, 1977	Palaeont. Soc. Japan, Spec. Paps., No. 21, p. 20, pl. 1, figs. 7, 8	Holotype: GK. H5827 (pl. 1, fig. 8) / Paratypes: GK. H5830 (p. 20, list only), GK. H5832 (pl. 1, fig. 7), GK. H5833 (p. 20, list only)	Fallen nodule derived from loc. Ik 2710 - 11, an outcrop in the Ponbetsu - Gonosawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokaido (141^59'00" E, 43^14'19" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Pachydiscus (Neodesmoceras) gracilis	Matsumoto, 1979	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 24, No. 2, p. 60, pl.10, fig. 1; pl. 12, Fig. 2	Holotype: GK. H5885	Loc. H311a, Kiusu, Hobetsu Valley, Iburi Province, northern Hokkaido (142^09'17" E, 42^38'31" N)	Unit IVc5 = K6b2 (uppermost of the Fukaushi Formation), Hakobuchi Group	Maastrichtian, Upper Cretaceous
Pachydiscus (Pachydiscus) excelsus	Matsumoto, 1979	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 2, p. 50, pl. 8, fig. 1	Holotype: GK. H5895	Sanushube Creek, a tributary of the River Hobetsu, Yufutsu County (Iburi Province), southern central Hokkaido (ca. 142^07'34" E, 42^53'04" N)	Unit IVa, Hakobuchi Group	Middle Campanian, Upper Cretaceous
Pachydiscus (Pachydiscus) flexuosus	Matsumoto, 1979	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 2, p. 53, pl. 9, figs. 1, 2	Holotype: GK. H5877	Loc. Kd525, about 2250 m northwest of Utsunai, Tombetsu Valley, Esashi County, northern Hokkaido	Unit D2 = Member H3b, Hakobuchi Group	Uppermost Campanian?, Upper Cretaceous
Pachydiscus sahekii	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 43, pl. 14, fig. 1a, b; pl. 15, fig. 2a, b; pl. 16, fig. 2	Holotype: GK. H5973 (pl. 14, fig. 1a, b) / Paratypes: MNH. 188 (pl. 16, fig. 2), MNH. 187 (p. 43, list only), MNH. 189 (pl. 15, fig. 2a, b); T. Miyauchi's private collection	Soya harbour, Soya Peninsula, northern Hokkaido (141^52'52" E, 45^29'06" N)	Unit H, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Pachydiscus soyaensis	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 41, pl. 10, fig. 5a - c; pl. 12, fig. 1a - d; pl. 13, fig. 1; pl. 16, fig. 1; pl. 17, fig. 1; pl. 21, fig. 3	Holotype: GK. H5972 (pl. 10, fig. 5a - c) / Paratypes: MNH. 124 (pl. 12, fig. 1a - d), MNH. 119(pl. 17, fig. 1), MNH. 120 (pl. 16, fig. 1), MNH. 202(pl. 13, fig. 1), MNH. 203, MNH. 204(pl. 21, fig. 3); T. Miyauchi's private collection	Locs. W 7B (for MNH. 120) and W 7A (for the rest), Soya harbour, Soya Peninsula, northern Hokkaido (141^52'52" E, 45^29'06" N)	Unit H, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Parajaubertella zizoh	Matsumoto, Yokoi and Kawashita, 1997	Paleont. Res., Vol. 1, No. 3, p. 194, fig. 7 - 4a - d	Holotype: GK. H8482	A nodule fallen from the outcrop at loc. R575, on the right side of a small branch gully of the middle course of the Suribachi - zawa Creek, a tributary of the Sounnai River, Soeushinai area, Uryu County, northwestern Hokkaido (142^04'48" E, 44^13'04" N)	Unit My3, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Parasolenoceras periodicum	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 64, pl. 28, fig. 1a, b; pl. 31, fig. 1a - c	Holotype: GK. H5979 (pl. 31, fig. 1a - c) / Paratype: MNH. 220, T. Miyauchi's private collection (pl. 28,fig. 1a, b)	Loc. W7A, Soya harbour, Soya Peninsula, northern Hokkaido (141^52'52" E, 45^29'06" N)	Unit H, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Parasolenoceras tomitai	Matsumoto, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 32, pl. 8, figs. 1a - c and 2a, b	Holotype: GK. H5968A, B	Loc. E42, Wembets (= Embetsu) - Rubeshibe River, Embetsu Town, northern Hokkaido (141^58'49" E, 44^41'50" N)	Unit Y, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Paratexanites (Paratexanites) compressus	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 20, No. 2, p. 255, pl. 36 (40), fig. 4	Holotype: GK. H5511	Loc. IK 882, an outcrop in the Inari - zawa Creek, a tributary of the Ikushumbets River. Mikasa City, Sorachi Province, central Hokkaido (ca. 142^02'E, 43^13'N)	Upper Yezo Group	Upper Coniacian, Upper Cretaceous
Paratexanites (Paratexanites) mikasaensis	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 20, No. 2, p. 258, pl. 37 (41), figs. 2, 3; text - fig. 15 (89)	Holotype: GK. H5510	From 17km point, main course of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous
Paratexanites (Paratexanites) muramotoi	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 20, No. 2, p. 257, pl. 37 (41), fig. 1; text - fig. 14(88)	Holotype: GK. H5645	A river gravel at YY053p, in the Isojiro - zawa Creek, a tributary of the Shiyubari (Yubari) River, Oyubari area, Sorachi Province, central Hokkaido (ca. 142^07'E, 43^06'N)	Upper Yezo Group	Senonian, Upper Cretaceous
Platiknemiceras caseyi	Matsumoto, 1980	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 118, p. 333, pl. 37, fig. 5	Holotype: GK. H6905A	Loc. Km 1843b, north of Shimo - fukami, Sakamoto Villege, Yatsushiro County, Kumamoto Prefecture, west Kyushu (130^40'50" E, 32^28'33" N)	Middle Member of Yatsushiro Formation	Albian, Lower Cretaceous
Prionocycloceras sigmoidale	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 16, No. 1, p. 41, pl. 9, fig. 1; text - fig. 17	Holotype: GK. H5435	Loc. 2001 of T. Muramoto, Ban - no - sawa Creek, a tributary of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi province, central Hokkaido (ca. 141^59'E, 43^13'N)	Unit IIIb, Upper Yezo Group	Turonian, Upper Cretaceous
Prionocycloceras wrighti	Matsumoto, 1971	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 21, No. 1, p. 134, pl. 22, fig. 2	Holotype: GK. H5556 (pl. 22, fig. 2) / Paratypes: GK. H5436 (list only), GK. H5488 (list only)	Kami - ichino - sawa, a right tributary of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi province, central Hokkaido (ca. 142^02'E, 43^16'N)	Unit IIIb, Upper Yezo Group	Turonian, Upper Cretaceous
Prionocyclus cobbani	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 16, No. 1, p. 21, pl. 4, figs. 1 - 4; text - fig. 7	Holotype: GK. H5432 (pl. 4, fig. 1; text - fig. 7) / Paratypes: GK. H5480 (pl. 4, fig. 2), GK. H5431 (pl. 4, fig. 4), GK H5433 (pl. 4, fig. 3)	Loc. Ik2012c, gully on the right side of the Pombets Creek, a tributary of the Ikushumbets River, Mikasa City, Sorachi province, central Hokkaido (141^58'41" E, 43^16'27" N)	Upper Yezo Group	Upper Turonian, Upper Cretaceous
Protexanites (Miotexanites) minimus	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. C (Geol.), Vol. 20, No. 2, p. 246, pl. 33(37), figs. 1 - 3; text - fig. 8(82)	Holotype: GK. H5634	11km point measured on the abandoned forestry railway, main stream of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Possibly Coniacian or Lower Santonian, Upper Cretaceous
Protokossmaticeras yezoense	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 64, pl.13, fig.1	Holotype: TTC. 570523, Takemi Takahashi's private collection	Takambets, Horonai, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (ca. 141^57'06" E, 43^14'26" N)	Mikasa Formation, Middle Yezo Group	Middle Cenomanian, Upper Cretaceous
Pseudaspidoceras sorachiense	Matsumoto and Hashimoto, 1953	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 12, p. 101, pl. 10, fig. 1a, b	Holotype: GK. H4023	Loc. KY301b, the Sorachi River, Minami - Furano Town, Kamikawa Province, central Hokkaido	Middle Yezo Group	Lower Turonian, Upper Cretaceous
Romaniceras (new genus?) aequicostatum	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 22, No. 2, p. 124, pl. 15, fig. 3	Holotype: GK. H5690	A river gravel at loc. Ik 1420p, in the Kami - ichi - no - sawa Creek, a branch of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (142^01'58" E, 43^15'04" N)	Mikasa Formation, Middle Yezo Group	Middle or Upper Turonian, Upper Cretaceous
Romaniceras yezoense	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 22, No. 2, p. 118, pl. 15, fig. 1	Holotype: GK. H5695	Loc. Yb423, Ponhorokabetsu River, Yubari City, Sorachi Province, central Hokkaido (141^57'39" E, 43^04'20" N)	Unit Mk2 or Mk3, Mikasa Formation, Middle Yezo Group	Middle to Upper Turonian, Upper Cretaceous
Saghalinites teshioensis	Matsumoto, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 27, pl. 9, figs. 1a - c	Holotype: GK. H5971 (pl. 9, figs. 1a - c) / Paratype: GK. H5970 (list only; mistakenly described as GK. H5941 on p. 27)	Loc. T 5011, Uttsu River, Teshio Mountains, northern Hokkaido	Hakobuchi Group	Upper Campanian, Upper Cretaceous
Scalarites densicostatus	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 349, pl. 57, fig. 1	Holotype: GK. H5806	Loc. Ik 2013, an outcrop along the Pombets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^58'39" E, 43^16'26" N)	Lower part of Upper Yezo Group	Middle Turonian to Coniacian, Upper Cretaceous
Schlueterella kawadai	Matsumoto and Miyauchi, 1984	Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 61, pl. 26, fig. 1a - c; pl. 27, figs. 3a - e, 4; pl. 28, fig. 2a - c; pl. 29, fig. 1a - c; pl. 30, figs. 1, 2a, b; pl. 31, fig. 3	(Holotype: GK. H5978 (pl. 26, fig. 1a - c; pl. 27, fig. 4) / (Paratypes: MNH. 111(pl. 30, fig. 2a, b), MNH. 211(p. 61, list only), MNH. 212 (pl. 29, fig. 1a - c), MNH. 215(pl. 27, fig. 3a - e), MNH. 216 (pl. 30, fig. 1), MNH. 83A (pl. 28, fig. 2a - c; pl. 31, fig. 3), MNH. 75 (p. 61, list only), MNH. 77 (p. 61, list only), MNH. 78 (p. 61, list only), MNH. 79 (p. 61, list only), MNH. 80 (p. 61, list only), MNH. 82 (p. 61, list only), MNH. 84 (p. 61, list only), MNH. 85 (p. 61, list only), MNH. 86 (p. 61, list only), MNH. 92 (p. 61, list only), MNH. 94 (p. 61, list only), MNH. 101 (p. 61, list only), MNH. 209 (p. 61, list only), MNH. 210 (p. 61, list only); T. Miyauchi's private collection)	Soya Harbour, Soya Peninsula, northern Hokkaido (141^52'52" E, 45^29'06" N)	Unit H, Hakobuchi Group	Upper Campanian, Upper Cretaceous
Sciponoceras intermedium	Matsumono and Obata, 1963	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 13, No. 2, p. 24, pl. 8, fig. 1; text - fig. 61	(Holotype: GK H538 (pl. 8, fig. 1)) / (Paratypes: GK H5387 (text - fig. 61), GK H5375 (p. 24, list only), GK H5376 (p. 24, list only), GK H5377 (p. 24, list only), GK H5378 (p. 24, list only), GK H5379 (p. 24, list only), GK H5380 (p. 24, list only), GK H5381 (p. 24, list only), GK H5382 (p. 24, list only), GK H5383 (p. 24, list only), GK H5384 (p. 24, list only), GK H5385 (p. 24, listonly), GK H5388 (p. 24, list only)	Loc. Ik2014e, an outcrop exposed along the Pombets Creek, a tributary of the Ikushumbets River, Pombets area, Mikasa City, Sorachi Province, central Hokkaido (141^58'40" E, 43^16'27" N)	Unit IIIa, near basal part of Upper Yezo Group	Upper Turonian, Upper Cretaceous
Sornayceras omorii	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 3, p. 230, pl. 42 [25], fig. 2; text - figs. 13 [53] - 14 [54]	Holotype: GK. H5493	Upper main stream of the Ikushumbets River, somewhat above confluence with the Inari - zawa Creek, Mikasa City, Sorachi province, central Hokkaido (ca. 142^03'00" E, 43^13'35" N)	Middle part of Upper Yezo Group	Upper Coniacian, Upper Cretaceous
Sornayceras proteus	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 3, p. 227, pl. 40 [23], fig. 1; text - figs. 11 [51] - 12 [52]	Holotype: GK. H5438	Yoshiyachi - zawa Creek, a branch of the Ikushumbets River, Mikasa City, Sorachi province, central Hokkaido	Upper Yezo Group	Upper Lower Urakawan (= Upper Coniacian), Upper Cretaceous
Sornayceras wadae	Matsumoto, 1971	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 21, No. 1, p. 142, pl. 24, fig. 1	Holotype: GK. H5647	Loc. Ik. 1527, an outcrop exposed between the Red Bridge and the confluence with the Kumaoi - zawa Creek in the upper reaches of the Ikushumbets River, Mikasa City, Sorachi province, central Hokkaido (142^04'30" E, 43^14'26" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Sounnaites hokkaidoensis	Matsumoto and Inoma, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p.118, pl. 30, figs. 3 - 4; text - fig. 14	Holotype: GK.H 8341	Loc. IA 2102, Sounnai River, Shumarinai - Soeushinai area, Horokanai Town, Uryu County, northwestern Hokkaido (142^05'13" E, 44^12'53" N)	Unit My2, Middle Yezo Group	Upper Albian, Lower Cretaceous
Stoliczkaia (Stoliczkaia) amanoi	Matsumoto and Inoma, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 2, p. 271, pl. 38, fig. 3	Holotype: GK. H4214	Shishijima Island, Amakusa Islands, Kumamoto Prefecture, western Kyushu (ca. 130^13 - 16' E, 32^15 - 18' N)	Member IIe, Goshonoura Group	Lower part of the Lower Cenomanian, Upper Cretaceous
Subprionotropis muramotoi	Matsumoto, 1965	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 16, No. 1, p. 47, pl. 4, fig. 5; text - fig. 21	Holotype: GK. H5434	Loc. Ik2012c, a cliff in the lower course of the Pombets River, a tributary of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (141^58'41" E, 43^16'27" N)	Unit IIIa', lower part of Upper Yezo Group	Upper Turonian, Upper Cretaceous
Sumitomoceras faustum	Matsumoto and Muramoto, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 2, p. 283, p. 283, pl. 38, fig. 1	Holotype: GK H5595	Loc. Ik1038, an outcrop exposed in the lower course from the Katsurazawa dam, Ikushumbets River, Mikasa City, Sorachi province, central Hokkaido (142^00'14" E, 43^14'34" N)	Unit IIc, middle part of Mikasa Formation, Middle Yezo Group	Uppermost Cenomanian, Upper Cretaceous
Takahashia eureka	Matsumoto, 1984	Proc. Japan Acad., Vol. 60, Ser. B, No. 3, p. 33, fig. 1A, B	Holotype: GK. H5567	Loc. IK 1101, Katsurazawa quarry (now abandoned) on the right side of the main stream of the Ikushumbets River, near the Ohashi bridge, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Yezo Group
Texanites (Plesiotexanites) pacificus	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 20, No. 2, p. 289, pl. 46 (50), fig. 4a, b	Holotype: GK. H5506	Loc. CK52, an outcrop in the Sankebetsu Creek, Haboro - Chikubetsu area, Tomamae County, northwestern Hokkaido (now under the Haboro Lake)(141^56'30" E, 44^20'33"N)	Member B2, Upper Yezo Group	Upper Santonian - Lower Campanian, Upper Cretaceous
Texanites (Plesiotexanites) yezoensis	Matsumoto, 1970	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 20, No. 2, p. 294, pl. 44 (48), fig. 2	Holotype: GK. H5646	A river gravel in a small stream running to the Ikushumbets River at loc. IK M1550p, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Possibly Santonian, Upper Cretaceous
Texanites yazakii	Matsumoto and Haraguchi, 1978	Trans. Proc. Palaeont. Soc. Japan, N. S., No.110, p. 307, pl. 42, figs.1,2	Holotype: GK. H5865	Loc. Y1120 (the left side of the creek called the Penkehoroka - yuparo), a tributary of the Shiyuparo River, Oyubari district, Sorachi Province, central Hokkaido (ca. 142^10'E, 42^59'N)	Upper Yezo Group	Santonian, Upper Cretaceous
Turrilites complexus
Turrilites miroku
Utaturiceras chrysan
Wellmanites japonicus	Matsumoto, Takahashi and Sanada, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 91, pl. 21, fig. 1	Holotype: TTC. 370417, Takemi Takahashi's private collection	Loc. IK1039, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (142^00'14" E, 43^14'35" N)	Unit IIc, Mikasa Formation, Middle Yezo Group	Upper Cenomanian, Upper Cretaceous
Worthoceras pacificum	Mastumoto and Yokoi, 1987	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 146, p. 43, fig. 4 - 1, 2; text - fig. 1A - C	Holotype: GK. H8121	Sakin - zawa Creek, Shumarinai - Soeushinai area, Uryu County, northwestern Hokkaido (ca. 142^07'E, 44^16'N)	Middle Yezo Group	Probably Cenomanian, Upper Cretaceous
Yabeiceras orientale	Tokunaga and Shimizu, 1926	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 56, p. 323, pl. 48, fig. 2; text - fig. 2	Neotype: GK. H5556	Upper reaches of the Sakurazawa Creek, Oriki, Hirono Town, Futaba County, Fukushima Prefecture, northeast Honshu (ca. 140^57'41" E, 37^12'15" N)	Lower part of Futaba Group (Ashizawa Formation)	Coniacian, Upper Cretaceous	(Remarks: Neotype was designated by Matsumoto (1969, p. 324).) / (Reference: Matsumoto, T., 1969. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 19, no. 3, 297 - 330, pls. 39 - 45.)
Yakushiceras takahashii	Matsumoto, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 53, pl. 8, figs. 2 - 4	(Holotype: GK. H8335 (pl. 8, figs. 2, 3)) / (Paratype: GK. H8336 (pl. 8, fig. 4))	A river gravel at loc. IK6018p, in the Torii - zawa Creek, a triburaty of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido	Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Yeharaites kobayashii	Matsumoto and Takahashi, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 46, pl. 8, fig. 1; text - fig. 7	Holotype: GK. H8334	Torii - sawa Creek, a tributary of the Ikushumbets River, Ikushumbetsu area, Mikasa City, Sorachi Province, central Hokkaido	Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Yezoceras miotuberculatum	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser D (Geol.), Vol. 23, No. 3, p. 320, pl. 46, fig. 2	Holotype: GK. H1391	Loc. Y112b, Shiyubari (=Yubari) River, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido (142^07'34" E, 43^09'00" N)	Upper Yezo Group	Upper Coniacian, Upper Cretaceous
Yokoyamaoceras minimum	Matsumoto, 1956	Jap. Jour. Geol. Geogr., Vol. 27, p. 186, pl. 16, fig. 6a - c	Holotype: GK. H5204	The Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous
Yokoyamaoceras (?) mysticum	Matsumoto, 1955	Jap. Jour. Geol. Geogr., Vol. 26, Nos. 1 - 2, p. 155, pl. 10, fig. 1a, b	Holotype: GK. H3379	Loc. U147p, Urakawa area, Hidaka Province, southern central Hokkaido (142^49'43" E, 44^10'44" N)	Upper Yezo Group	Senonian, Upper Cretaceous
Yokoyamaoceras ornatum	Matsumoto, 1956	Jap. Jour. Geol. Geogr., Vol. 27, p. 183, pl. 16, fig. 3a, b	Holotype: GK. H5210	The Abeshinai River, Saku - Abeshinai area, Nakagawa Town, Teshio Province, northern Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous
Neophylloceras hetonaiense	Matsumoto, 1942	Proc. Imp. Acad., Tokyo, Vol. 18, No. 18, p. 675, fig. 1a3, b3	Lectotype : GK. H3801a	Loc. H12b, an outcrop exposed in the small riblet near Omagari, Tomiuchi area, Iburi Province, southern central Hokkaido	Unit IVb, Hakobuchi Group	Upper Campanian, Upper Cretaceous	(= Hypophylloceras (Neophylloceras) hetonaiense (Matsumoto, 1942)) / Remarks. Lectotype was designated by Matsumoto (1959, p. 5). / Reference: Matsumoto, T., 1959. Mem. Fac. Sci., Kyushu Univ., Ser. D, Spec. Vol. 1, 1 - 172, pls. 1 - 41.
Shastricrioceras nipponicum	Matsumoto, 1947	Sci. Rep. Kyushu Univ., Geol. Ser., Vol. 2, p. 19, pl. 1, fig. 3; text - fig. 2	Lectotype: GK. H8305	Loc. Yu - 103, Yuasa - Fujinami, Yuasa area, Wakayama Prefecture, west Honshu (135^12'10" E, 34^02'38" N)	Middle part of Arida Formation	Lower Barremian	Remarks: Lectotype was designated by Mastukawa and Obata (1993, p. 255).

Bayerische Staatssammlung für Paläontologie und Geologie
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Anisoceras haradanum	Yokoyama, 1890	Palaeontographica, Vol. 36, p. 182, pl. 20, fig. 5	Lectotype: Unnumbered specimen registered in Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muenchen	Iburi (= Efue), near Urakawa, Hidaka Province, southern central Hokkaido (ca. 142^44'E, 44^42'12" N)	Upper Yezo Group	Santonian - Campanian, Upper Cretaceous	(= Polyptychoceras haradanum (Yokoyama, 1890)) / Remarks: Lectotype was designated by Matsumoto (1963, p. 30). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap., 25th Anniversary Vol., 27 - 32, pls.44 - 51. [see printed matter]
Anisoceras subquadratum	Yokoyama, 1890	Palaeontographica, Vol. 36, p. 183, pl. 20, fig. 6	Lectotype: Unnumbered specimen registered in Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muechen	Near Urakawa, Hidaka Province, southern central Hokkaido	Upper Yezo Group	Santonian - Campanian, Upper Cretaceous	(= Polyptychoceras subquadratum (Yokoyama, 1890)) / Remarks: Lectotype was designated by Matsumoto (1963, p. 30). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap., 25th Anniv. Vol., 27 - 32, pls.44 - 51. [see printed matter]
Anisoceras subundatum	Yokoyama, 1890	Palaeontographica, Vol. 36, p. 183, pl. 20, fig. 7	Syntype: Unnumbered specimen registered in Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muenchen	Near Urakawa, Hidaka Province, southern central Hokkaido	Upper Yezo Group	Santonian - Campanian, Upper Cretaceous	(= Polyptychoceras subundatum (Yokoyama, 1890)) / Remarks: Lectotype was designated by Matsumoto (1963, p. 30). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap., 25th Anniv. Vol., 27 - 32, pls.44 - 51.
Gaudryceras tenuiliratum	Yabe, 1903	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 19 (see also Yokoyama, 1890, pl. 18, figs. 12a, b)	Lectotype: Nr. 1889. IX. 16, Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muenchen	Iburi (= Efue), Urakawa area, Hidaka Province, southern central Hokkaido (ca. 142^44'E, 42^12'N)	Pachydiscus - beds (= Upper Yezo Group)	Senonian, Upper Cretaceous	Remarks: Matsumoto (1963, p. 29) designated this specimen as the lectotype. Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap., 25th Anniv. Vol., 27 - 32, pls.44 - 51. [see printed matter]
Pachydiscus sutneri	Yokoyama, 1890	Palaeontographica, Vol. 36, p. 187, pl. 23, fig. 1	Holotype: Registered in Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muenchen	Ibui (= Efue) near Urakawa, Urakawa Town, Hidaka Province, southern central Hokkaido (ca. 142^44'E, 42^12'N)		Santonian, Upper Cretaceous	(="Anapachydiscus" (= Menuites) sutneri (Yokoyama, 1890)) / Remarks: The generic position of this species was transferred to Anapachydiscus by Matsumoto (1954, p. 276). / Reference: Matsumoto, T., 1954. In T. Matsumoto (ed.): The Cretaceous System in the Japanese Islands, 243 - 324, pls.1 - 20, Jap. Soc. Prom. Sci., Tokyo. [see printed matter]
Phylloceras ezoense	Yokoyama, 1890	Palaeontographica, Vol. 36, p. 178, pl. 19, fig. 2a, b	Holotype: Unnumbered specimens registered in the Bayer Staatssammlung fuer Palaeontologie und historische Geologie, Muenchen	Near Urakawa, Hidaka Province, southern central Hokkaido	Upper Yezo Group	Senonian, Upper Cretaceous	(= Phyllopachyceras yezoense (Yokoyama, 1890)) / Remarks: Ther generic position of this species was transferred to Phyllopachyceras by Matsumoto (1963, p. 29). / Reference: Matsumoto, T., 1963. Palaeont. Soc. Jap., 25th Anniversary Vol., 27 - 32, pls. 44 - 51. [see printed matter]
Neopuzosia japonica

others
Scientific name	Author	Reference	Type specimen	Type locality	Formation name	Age	Remarks	Photo	3D
Ampakabites regina	Matsumoto, Fujishima and Miyauchi, 1978	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 1, p. 11, pl. 3, fig. 1	Holotype: HCS. No. 92 (Y. Fujishima Coll.)	Right bank exposure in the Panke - moyubari Creek, near 10 km point along the abandoned forestry railway in Oyubari area, Sorachi Province, central Hokkaido	Saku Formation, Middle Yezo Group	Middle Turonian, Upper Cretaceous
Baculites (Lechites) yokoyamai	Tokunaga and Shimizu, 1926	Jour. Fac. Sci., Imp. Univ. Tokyo, Sec. 2, Vol. 1, p. 195, pl. 22, fig. 5a, b; pl. 26, fig. 11	Holotype: Unnumbered specimen in the Waseda University (lost by fire during the World War II)	Upper reaches of the Sakurazawa Creek, Oriki, Hirono Town, Futaba County, Fukushima Prefecture, northeast Honshu (140^57'38" E, 37^12'18" N)	Ashizawa Formation, Futaba Group	Conacian, Upper Cretaceous
Canadoceras tanii	Matsumoto and Morozumi, 1980	Bull. Osaka Mus. Nat. Hist., No. 33, p. 7, pl. 2, fig. 1	Holotype: MT80 (M. Tani' s Collection)	Loc. 4, Takinoike, Izumisano City, Osaka Prefecture, west Japan	Horizon A2, Azenotani Formation, Izumi Group (135^19'53" E, 34^21'07" N)	Campanian or Maastrichtian, Upper Cretaceous
Cirroceras (?) nakaminatoensis	Saito, 1959	Bull. Fac. Arts & Sci., Ibaraki Univ., Nat. Sci., No. 9, p. 79, pl. 1, figs. 1 - 2	Holotype: GIUM coll. cat. no. 4075 (Dept. Earth Sci., Ibaraki Univ.)	Pacific coast of Hiraiso, Nakaminato City, Ibaraki Prefecture, northeastern Honshu (ca. 140^37'18"E, 36^21'20" N)	Hiraiso Member, Nakaminato Formation, Naka Group	Upper Campanian to Lower Maastrichtian, Upper Cretaceous	(= Didymoceras nakaminatoensis (Saito, 1958)) / Remarks: The generic position of this species was transferred to Didymoceras by Saito (1962, p. 53, table 13). / Reference: Saito, T., 1962. Bull. Fac. Arts & Sci., Ibaraki Univ., Nat. Sci., No. 13, 51 - 88, pls. 1 - 8.
Dipoloceras (Diplasioceras) tosaense	Matsumoto and Hirata, 1969	Jour. Fac. Sci., Hiroshima Univ., Ser. C, Vol. 6, No. 1, p. 179, pl.20, fig. 1a - c	Holotype: M. Hirata Collection No. 7002 (internal mould) and No. 7003 (external mould), now preserved at the Geological Museum in Makino Botanical Garden, Kochi	Loc. no. 1603, Nakahashi, Azai, Hewa, Tosa City, Kochi Prefecture, Shikoku	Hayama Formation	Middle Albian, Lower Cretaceous
Fagesia japonica	Matsumoto and Muramoto, 1978	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 109, p. 283, pl. 39, fig. 3	Holotype: HCS. No. 1 (Geological Section, Hokkaido Colliery & Steamship Co. Ltd., Yubari)	Loc. H2074, the left bank of creek called the Nutapomanai, a tributary of the River Hobetsu, Hobetsu area, central Hokkaido (142^10'49" E, 42^54'54" N)	Middle Yezo Group	Lower Turonian, Upper Cretaceous
Forbesiceras mikasaense	Matsumoto, 1897	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 145, p. 21, fig. 3 - 1a - c; text - fig. 1	Holotype: TTC. 390413, T. Takahashi's private collection	Loc. IK 1100, Katsurazawa quarry (now abandoned), on the right side of the Ikushumbetsu River, Mikasa Town, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N )	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Lewesiceras kawashitai	Matsumoto, 1979	Trans. Proc. Palaeont. Soc. Jap., N. S., No. 113, p. 32, pl. 4, fig. 1	Holotype: Y. Kawashita' s private collection	A rolled or fallen nodule in the Ashibetsu River, a point about 2 km downstream from the Kami - Ashibetsu dam, Ashibetu area, central Hokkaido (142^06'58" E, 43^18'22" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Lewesiceras satoi	Matsumoto, 1979	Trans. Proc. Palaeont. Soc. Jap., N. S., No. 113, p. 34, pl. 5, fig. 1	Holotype: HCS. No. 187, Geological Section, Hokkaido Colliery & Steamship Co. Ltd., Yubari	A floated nodule at a point about 100 m downstream from the conference with a branch called the Nutapomanai Creek, Hobetsu River, Hobetsu area, central Hokkaido (142^11'25" E, 42^54'34" N)	Middle Yezo Group	Turonian, Upper Cretaceous
Mesopuzosia takahashii	Matsumoto, 1988	Palaeont. Soc. Japan, Spec. Paps., No. 30, p. 52, figs. 12, 13, 25E	Holotype: TTC. 570926, T. Takahashi's private collection	Loc. Y5323, on the left side of the lower course of the Kaneobets Creek, a tributary of the Yubari River, Oyubari area, Sorachi Province, central Hokkaido (142^08'24" E, 43^02'29" N)	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Neocrioceras dentatum	Matsumoto and Obata, 1984	Proc. Jap. Acad., Vol. 60, Ser. B, p.341, figs.1 - 2	Holotype: Y. Kawashita's private collection	Upper reaches of the Naka - no - futamata - gawa Creek, a tributary to the River Haboro, Haboro area, Tomamae County northwestern Hokkaido (ca. 142^02'48" E, 44^19'18" N)	Middle Yezo Group	Upper Turonian, Upper Cretaceous
Peroniceras latum	Matsumoto, Muramoto and Hirano, 1981	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 121, p. 52, pl. 6, fig. 1; pl. 7, fig. 1; text - fig. 1	Holotype: HCS.73, Hokkaido Colliery and Steamship Company, Yubari City	Loc. Ik 1540, main stream of the Ikushunbetsu River, about 100m downstream from the confluence with the tributary Samatazawa, Mikasa City, Sorachi Province, central Hokkaido (142^03'30" E, 43^12'41" N)	Upper Yezo Group	Upper Coniacian, Upper Cretaceous
Reesidites latus	Matsumoto and Obata, 1982	Bull. Nat. Sci. Mus., Ser. C, Vol. 8, No. 2, p. 82, pl. 6, fig. 2a,b	Holotype: No. 54 - 10 - 20, Y. Kawashita's private collection	Loc. 163 (of T. Takahashi), in the Ponnebetsu(= Suido - no - sawa) Creek, Manji area, central Hokkaido, Sorachi Province, central Hokkaido (141^58'38" E, 43^07'21" N)	Mikasa Formation, Middle Yezo Group	Uppermost Turonian, Upper Cretaceous
Rhyoptychoceras mikasaense	Matsumoto, 1977	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 23, No. 3, p. 352, pl. 59, fig. 1	Holotype: TTC. 5000, T. Takahashi' s private collection	Loc. Ik 2710, Pombetsu - go - no - sawa Creek, a tributary of the Ikushumbets River, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^59'00" E, 43^14'19" N)	Upper Yezo Group	Coniacian, Upper Cretaceous
Sharpeiceras kongo	Matsumoto, Muramoto and Takahashi, 1969	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 2, p. 261, pl. 29, fig. 1; pl. 30, fig. 1	(Holotype: No. 425261, Takemi Takahashi' s private collection (pl. 29, fig. 1; pl. 30, fig. 1)) / (Paratype: GK. H5604 (list only))	Loc. IK 1100, Katurazawa quarry (now closed) along the main stream of the Ikushumbets River, Mikasa City, Sorachi Province, central Hokkaido (141^59'30" E, 43^15'00" N)	Lower part of unit IIb, Mikasa Formation, Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Shuparoceras yagii	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 21, No. 1, p. 110, pl. 12, fig.	Holotype: HCS. No. 56, Geological Survey, Hokkaido	Colliery & Steamship Co., Yubari City River gravel in the Shiyubari (= Yubari) River, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido	Middle Yezo Group	Middle Turonian, Upper Cretaceous
Tragodesmoceroides matsumotoi	Hirano, Okamoto, and Hattori, 1990	Trans. Proc. Palaeont. Soc. Japan, N. S., No. 157, p. 394, fig. 11 - 22, 23, 24	Holotype: WEA 103T, Institute of Earth Science, Waseda University (missing)	Locality A (= R 6072 of Tanabe et al., 1977), Takishita, Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido (now under the Obirashibe Lake) (141^55'03" E,44^03'57" N)	Saku Formation, Middle Yezo Group	Middle Turonian, Upper Cretaceous
Yabeiceras himuroi	Tokunaga and Shimizu, 1926	Jour. Fac. Sci., Imp. Univ. Tokyo, sect. 2, Vol. 1, pt. 6, p. 203, pl. 22, fig. 9; pl. 27, fig. 2a, b	Holotype: unregistered specimen of Waseda University (destroyed by fire in 1944 and now missing)	Upper reaches of the Sakurazawa Creek, Oriki, Hirono Town, Futaba County, Fukushima Prefecture, northeast Honshu (ca. 140^57'38" E, 37^12'18" N)	Lower part of Futaba Group (Ashizawa Formation)	Coniacian, Upper Cretaceous
Yabeiceras kotoi	Tokunaga and Shimizu, 1926	Jour. Fac. Sci., Imp. Univ. Tokyo, sect. 2, Vol. 1, pt. 6, p. 202, pl. 22, fig. 8; pl. 24, fig. 15	Holotype: unregistered specimen of Waseda University (destroyed by fire in 1944 and now missing)	Upper reaches of the Sakurazawa Creek, Oriki, Hirono Town, Futaba County, Fukushima Prefecture, northeast Honshu (ca. 140^57'38" E, 37^12'18" N)	Lower part of Futaba Group (Ashizawa Formation)	Coniacian, Upper Cretaceous
Yabeiceras orientale	Tokunaga and Shimizu, 1926	Jour. Fac. Sci., Imp. Univ. Tokyo, sect. 2, Vol. 1, pt. 6, p. 201, pl. 22, fig. 7; pl. 27, fig. 1	Holotype: unregistered specimen of Waseda University (destroyed by fire in 1944 and now missing)	Hirono Town, Futaba County, Fukushima Prefecture, northeast Honshu	Lower part of Futaba Group (Ashizawa Formation)	Coniacian, Upper Cretaceous
Yakushiceras takahashii	Matsumoto, 1991	Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 49, pl. 9, fig. 1	Holotype: YKC. 010718, Yoshitaro Kawashita's private collection	Loc. S - 901, Hakkin - zawa Creek, a tributary of the Yubari (Shiyubari) River, Oyubari (Shiyubari) area, Sorachi Province, central Hokkaido (ca. 142^11'E, 43^02'N)	Middle Yezo Group	Lower Cenomanian, Upper Cretaceous
Yubariceras fujishimai	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D. (Geol.), Vol. 22, No. 2, p. 148, pl. 22, fig. 2; pl. 23, fig. 3; text - fig. 17	Holotype: HCS. No. 40, Geological Section, Hokkaido	Colliery & Steamship Co. Ltd., Yubari About 400 m southeast from the mouth of the Kaneobetsu River, a tributary of the Pankemoyuparo, Oyubari area, Sorachi Province, central Hokkaido (142^08'28" E, 43^02'33" N)	Middle Yezo Group	Upper Turonian, Upper Cretaceous
Yubariceras pseudomphalum	Matsumoto, 1975	Mem. Fac. Sci., Kyushu Univ., Ser. D. (Geol.), Vol. 22, No. 2, p. 146, pl. 22, fig. 1	Holotype: M. 76, T. Muramoto' s private collection	A river gravel in the Taki - no - sawa Creek (= Pankemoyuparo Creek), a tributary of Yubari River, Oyubari area, Sorachi province, central Hokkaido	Middle Yezo Group	Turonian, Upper Cretaceous

*Information of the specimens is modified from Palaeontological Society of Japan and Geological Survey of Japan, AIST (2013): the database of Japanese fossil type specimens described during the 20^th Century (Web Version).