3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan

Scientific name	Gaudryceras yokoyamai
Author	Yabe, 1903
Reference	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 36, pl. 6, figs. 1a - b, 2a - b; pl. 7, fig. 6'
Type specimen	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)
Type locality	Yubarizawa(= Yubari River or Ikushumbets River), Province of Ishikari (now Sorachi), central Hokkaido
Formation name	Upper Ammonite - beds (= Upper Yezo Group)
Age	Senonian, Upper Cretaceous
Remarks	(= 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).