3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Kossmaticeras flexuosum | |
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| Author | Matsumoto, 1991 | |
| Reference | Palaeont. Soc. Jap., Spec. Paps., No. 33, p. 96, pl. 22, fig. 2 | |
| Type specimen | Holotype: GK. H8342 | |
| Type locality | Nutapomanai Creek, Hobetsu area, Iburi Province, southern - central Hokkaido (ca. 142^00'E, 42^55'N) | |
| Formation name | Middle Yezo Group | |
| Age | Middle Turonian, Upper Cretaceous | |
| Remarks | ||