Pectunculus sp.
| 1957. | Pectunculus sp. Makiyama, J. 1957 pl. 22, fig. 17 |
| 1925. | Pectunculus sp. Yokoyama, M. 1925b p. 9, pl. 1, fig. 17 |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Veneridae: |
| Geologic Time: | Cenozoic: |
| Makiyama, J., 1957: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 1. Palaeontological Society of Japan, Special Papers, no. 3, pp. 1–4, pls. 1–24. (Reference No. 0367) |
| Yokoyama, M., 1925b: Molluscan remains from the middle part of the Jo-ban coal-field. Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 7, pp. 1–23, pls. 1–3. (Reference No. 0474) |
  |
| Ichikawa, T., 1983, no. 9, p. 44. |
| Ichikawa, T., 1983, no. 9, p. 310. |
