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

Scientific name	Defordiceras (?) japonicum
Author	Matsumoto, 1970
Reference	Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 22, No. 2, p. 301, pl. 47 (51), fig. 2
Type specimen	Holotype: GK. H5638
Type locality	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)
Formation name	Unit B1 or A, Upper Yezo Group
Age	Lower Santonian, Upper Cretaceous
Remarks