3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Ancyloceras giganteum | |
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| Author | Yabe and Shimizu, 1931 | |
| Reference | Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, p. 37, pl. 4, fig. 7 | |
| Type specimen | Holotype: IGPS 35297 | |
| Type locality | A little north of Komo, Hanoura Town, Naka County, Tokushima Prefecture, Shikoku (134^35'49" E, 33^56'41" N) | |
| Formation name | Mochii Formation | |
| Age | Lower Aptian, Lower Cretaceous | |
| Remarks | ||