3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Euomphaloceras asura | |
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| Author | Matsumoto and Muramoto, 1969 | |
| Reference | Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 19, No. 2, p. 277, pl. 35, fig. 1; pl. 36, fig. 1; text - fig. 7 | |
| Type specimen | Holotype: GK. H5602 | |
| Type locality | Loc. T 1165, Saku - gakko - no - sawa Creek, Abeshinai - Saku area, Nakagawa Town, northern Hokkaido (142^01'06" E, 44^44'14" N) | |
| Formation name | Unit IIb - c, Middle Yezo Group | |
| Age | Upper Cenomanian, Upper Cretaceous | |
| Remarks | ||