3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Acanthoceras rotomagense var. asiatica | |
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| Author | Jimbo, 1894 | |
| Reference | Palaeont. Abhandl., N. F., Vol. 2, No. 3, p. 177, pl. 4, fig. 1, 1a | |
| Type specimen | Holotype: UMUT MM7512 (= GT. I - 105) | |
| Type locality | Ikushumbets area, Mikasa City, Sorachi Province, central Hokkaido | |
| Formation name | Middle Yezo Group | |
| Age | Middle Cenomanian, Upper Cretaceous | |
| Remarks | (= Calycoceras asiaticum (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Calycoceras by Matsumoto, Saito and Fukada (1957, p. 11). / Reference: Matsumoto, T., Saito, R. and Fukada, A., 1957. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 6, No. 1, pp. 1 - 45, pls. 1 - 18. [see printed matter] | |