Eutrephoceras japonicum (Shimizu)
| 1959. | Eutrephoceras japonicum (Shimizu) Kobayashi, T. & Kamada, Y. 1959b p. 116, pl. 10, fig. 1a, b |
| Condition: | Present |
| Material: | [with a specimen of Ostrea cassis Nagao] |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Cenozoic: |
| Kobayashi, T. and Kamada, Y., 1959b: Bio-, thanato- and fossil-history of Eutrephoceras japonicum. Japanese Journal of Geology and Geography, vol. 30, pp. 115–125, pl. 10. (Reference No. 0366) |
| Ichikawa, T., 1983, no. 9, p. 37. |
