3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Marshallites involutus | |
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| Author | Matsumoto and Saito, 1991 | |
| Reference | Palaeont. Soc. Japan, Spec. Paps., No. 33, p. 38, pl. 6, fig. 1 | |
| Type specimen | Holotype: GK. H8338 | |
| Type locality | Loc. Kurumi - zawa Creek, Saku (Abeshinai) area, Nakagawa Town, Teshio Province, northern Hokkaido (ca. 142^04'30" E, 44^36'56" N) | |
| Formation name | Shibunnai - toge Formation of Shimizu (1932), Middle Yezo Group | |
| Age | Cenomanian, Upper Cretaceous | |
| Remarks | ||