Macoma optiva (Yokoyama)
| 1934. | Macoma optiva (Yokoyama) Otuka, Y. 1934 p. 619, pl. 48, fig. 51 PreviousNo: 1474 |
| 1934. | Conus tokunagai Otuka, 1934 Syntype PreviousNo: 1593 |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Tellinidae: |
| Geologic Time: | Cenozoic: |
| Otuka, Y., 1934a: Tertiary structures of the northwestern end of the Kitakami mountainland, Iwate Prefecture, Japan. Bulletin of the Earthquake Research Institute, Tokyo Imperial University, vol. 12, pt. 3, pp. 566–638, pls. 44–51. (Reference No. 0384) |
  |
| Ichikawa, T., 1983, no. 9, p. 79. |
| Ichikawa, T., 1983, no. 9, p. 86. |
