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3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Pachydiscus (Pachydiscus) flexuosus | |
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| Author | Matsumoto, 1979 | |
| Reference | Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 2, p. 53, pl. 9, figs. 1, 2 | |
| Type specimen | Holotype: GK. H5877 | |
| Type locality | Loc. Kd525, about 2250 m northwest of Utsunai, Tombetsu Valley, Esashi County, northern Hokkaido | |
| Formation name | Unit D2 = Member H3b, Hakobuchi Group | |
| Age | Uppermost Campanian?, Upper Cretaceous | |
| Remarks | ||