Pitar okadana (Yokoyama)
| 1959. | Pitar okadana (Yokoyama) Syntype Makiyama, J. 1959 pl. 84, fig. 8 |
| 1932. | Venus ? okadana Yokoyama, 1932 Syntype Yokoyama, M. 1932a p. 240, pl. 2, fig. 8 |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: Veneridae: |
| Geologic Time: | Cenozoic: |
| Horizon: | Lower Okada beds: |
| Makiyama, J., 1959: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 3. Palaeontological Society of Japan, Special Papers, no. 5, pp. 1–4, pls. 58–86. (Reference No. 0369) |
| Yokoyama, M., 1932a: Tertiary Mollusca from the coalfield of Uryu, Ishikari. Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 3, pt. 6, pp. 221–247, pls. 1–4. (Reference No. 0503) |
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| Ichikawa, T., 1983, no. 9, p. 63. |
| Ichikawa, T., 1983, no. 9, p. 389. |
