3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Gaudryceras mamiyai | |
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| Author | Matsumoto and Miyauchi, 1984 | |
| Reference | Palaeont. Soc. Japan, Spec. Paps., No. 27, p. 55, pl. 24, fig. 1 - d | |
| Type specimen | Holotype: GK. H5974, Paratypes: MNH. 185 (pl. 24, fig. 1 - d), MNH. 186 (p. 55, list only) ; T. Miyauchi's private collection | |
| Type locality | Kiyohama - II, Soya Peninsula, northern Hokkaido (141^54'13" E, 45^30'35" N) | |
| Formation name | Unit H, Hakobuchi Group | |
| Age | Upper Campanian, Upper Cretaceous | |
| Remarks | ||