| 1936. | Umbonium (Suchium) akitanum Suzuki PreviousNo: 3089 |
| Condition: | Present |
| Taxonomy: | Mollusca: Gastropoda: Trochidae: |
| Geologic Time: | Cenozoic: |
| Otuka, Y., 1936a: Pliocene Mollusca from Manganzi in Kotomo-mura, Akita Pref., Japan. Journal of the Geological Society of Japan, vol. 43, no. 516, pp. 726–736, pls. 41–42. (Reference No. 0388) |
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| Ichikawa, T., 1983, no. 9, p. 99. |
