3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Crioceras yagii | |
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| Author | Yabe and Shimizu, 1926 | |
| Reference | Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 9, No. 2, p. 72(40), pl. 15 (4), figs. 16 - 19 | |
| Type specimen | Holotype: Unnumbered specimen at Institute of Geology and Paleontology, Tohoku University | |
| Type locality | Ishido, Minami - Saku County, Nagano Prefecture, central Honshu (ca. 138^38'E, 36^07'N) | |
| Formation name | Ishido Group (= Ishido Formation) | |
| Age | Barremian, Lower Cretaceous | |
| Remarks | ||