Otostoma japonicum (Nagao)
| 1984. | Otostoma japonicum (Nagao) Kase, T. 1984 p. 90, pl. 9. fig. 4a-c |
| Condition: | Present |
| Taxonomy: | Mollusca: Gastropoda: |
| Geologic Time: | Mesozoic: |
| Kase, T., 1984: Early Cretaceous marine and brackish-water Gastropoda from Japan., pp. 1–263, pls. 1–31. National Science Museum, Tokyo. (Reference No. 0529) |
| Ichikawa, T., 1988, no. 15, p. 27. |
