Septifer (s. s.) nagaoi Oyama
| 1952. | Septifer (s. s.) nagaoi Oyama |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Mytilidae: |
| Geologic Time: | Cenozoic: |
| Mizuno, A., 1952: Descriptions of the Paleogene molluscs from Sakito, Nagasaki Prefecture, Japan. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 5, pp. 185–193, pl. 17. (Reference No. 0370) |
| Ichikawa, T., 1983, no. 9, p. 67. |
