3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Pseudokossmaticeras yagii | |
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| Author | Matsumoto, 1990 | |
| Reference | Bull. Hobetsu Mus., No. 6, p. 5, pl. 1A - C; text - fig. 1 | |
| Type specimen | Holotype: HCS. No.13, Hokkaido Colliery and Steamship Company Collection | |
| Type locality | A nodule loose on the upper course of the Kuriki River, 4 km northeast of Noborikawa, Noborikawa area, Iburi Province, southern central Hokkaido | |
| Formation name | Upper Yezo Group or Hakobuchi Group | |
| Age | Upper Campanian or Lower Maastrichitian, Upper Cretaceous | |
| Remarks | ||