3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Epigoniceras glabrum var. problematica | |
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| Author | Matsumoto, 1942 | |
| Reference | Proc. Imp. Acad. Tokyo, Vol. 18, p. 672, fig. 1 | |
| Type specimen | Holotype: UMUT MM5529 | |
| Type locality | Hokkaido (no detailed locality record) | |
| Formation name | Upper Yezo Group | |
| Age | Senonian, Upper Cretaceous | |
| Remarks | ||