Acila ( Truncacila ) nakazimai Otuka, 1939
| 1939. | Acila (Truncacila) nakazimai Otuka, 1939 Syntype PreviousNo: 4252 |
| 1930. | Umbonium giganteum naganumanum Otuka, 1930 Paratype Otuka, Y. 1930 p. 25 |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: Nuculidae: |
| Geologic Time: | Cenozoic: |
| Otuka, Y., 1930: A new variety of fossil Umbonium. Journal of the Geological Society of Tokyo, vol. 37, no. 436, pp. 25–26. (Reference No. 0381) |
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| Otuka, Y., 1939a: Mollusca from the Cainozoic system of eastern Aomori Prefecture, Japan. Journal of the Geological Society of Japan, vol. 46, no. 544, pp. 23–31, pl. 2. (Reference No. 0399) |
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| Ichikawa, T., 1983, no. 9, p. 109. |
| Ichikawa, T., 1983, no. 9, p. 75. |
