Mactra sp.
| 1923. | Mactra sp. |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: Mactridae: |
| Geologic Time: | Cenozoic: |
| Yokoyama, M., 1923c: On some fossil Mollusca from the Neogene of Izumo. Japanese Journal of Geology and Geography, vol. 2, no. 1, pp. 1–9, pls. 1–2. (Reference No. 0469) |
| Ichikawa, T., 1983, no. 9, p. 293. |
