3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Marshallites rotundatus | |
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| Author | Matsumoto and Takahashi, 1991 | |
| Reference | Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 43, pl. 7, figs. 1 - 2 | |
| Type specimen | Holotype: GK. H8268 | |
| Type locality | Loc. IK1066p, a rollen nodule at the entrance of the Torii - sawa Creek, Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido (141^48'38" E, 43^15'02" N) | |
| Formation name | Unit IIb, Mikasa Formation, Middle Yezo Group | |
| Age | Lower Cenomanian, Upper Cretaceous | |
| Remarks | ||