3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Mammites costatus | |
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| Author | Matsumoto and Kawashita, 1978 | |
| Reference | Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 26, No. 1, p. 5, pl. 1, fig. 1 | |
| Type specimen | Holotype: No. 51 - 8 - 20, Yoshitaro Kawashita's private collection | |
| Type locality | Shogako - no - sawa Creek, near Kashima, Oyubari area, central Hokkaido (ca. 142^07'38" E, 43^04'36" N) | |
| Formation name | Middle Yezo Group | |
| Age | Lower Turonian, Upper Cretaceous | |
| Remarks | (= Neomphaloceras costatum (Matsumoto and Kawashita, 1978)) / Remarks: The generic position of this species was transferred to Neomphaloceras by Matsumoto (1991, p. 920). / Reference: Matsumoto, T., 1991. Trans. Proc. Palaeont. Soc. Jap., N. S., No. 164, 910 - 927, figs. 1 - 8. | |