3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Romaniceras yezoense | |
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| Author | Matsumoto, 1975 | |
| Reference | Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 22, No. 2, p. 118, pl. 15, fig. 1 | |
| Type specimen | Holotype: GK. H5695 | |
| Type locality | Loc. Yb423, Ponhorokabetsu River, Yubari City, Sorachi Province, central Hokkaido (141^57'39" E, 43^04'20" N) | |
| Formation name | Unit Mk2 or Mk3, Mikasa Formation, Middle Yezo Group | |
| Age | Middle to Upper Turonian, Upper Cretaceous | |
| Remarks | ||