3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Gaudryceras subcostatum | |
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| Author | Matsumoto, 1995 | |
| Reference | Palaeont. Soc. Japan, Spec. Paps., No. 35, p. 75, fig. 38A - E | |
| Type specimen | Holotype: UMUT MM19693 (= GT. I - 3268a)(fig. 38A - C) / Paratype: UMUT MM19694 (= GT. I - 3268b)(fig. 38D, E) | |
| Type locality | Loc. T 881b, Shibunnai, Abeshinai River, Nakagawa Town, Teshio Province, northern Hokkaido (142^05'24" E, 44^39'41" N) | |
| Formation name | Unit IIb, Middle Yezo Group | |
| Age | Cenomanian, Upper Cretaceous | |
| Remarks | ||