Neptunea otukai Chinzei
| 1968. | Neptunea otukai Chinzei Holotype Chinzei, K. 1968a pl. N-2, fig. 6 |
| 1964. | Neptunea otukai Chinzei Holotype Shikama, T. 1964 p. 110, pl. 32, fig. 8 |
| 1959. | Neptunea otukai Chinzei, 1959 Holotype Chinzei, K. 1959 p. 112, pl. 9, figs. 12, 13 |
| Condition: | Present |
| Taxonomy: | Mollusca: Gastropoda: Buccinidae: |
| Geologic Time: | Cenozoic: Pliocene: |
| Horizon: | Sannohe group: |
| Chinzei, K., 1959: Molluscan fauna of the Pliocene Sannohe group of northeast Honshu, Japan. 1. The faunule of the Kubo formation. Journal of the Faculty of Science, University of Tokyo, Section 2, vol. 12, pt. 1, pp. 103–132, pls. 9–11. (Reference No. 0336) |
| Chinzei, K., 1968a: Pliocene Mollusca from northern corner of the Kitakami massif, 1. Atlas of Japanese fossils, no. 3, 4 pp., pl. N-2. Tsukiji Shokan Publishing Co., Ltd., Tokyo. (in Japanese) (Reference No. 0508) |
| Shikama, T., 1964a: Index fossils of Japan., pp. 1–287, pls. 1–80. Asakura Shoten, Tokyo. (in Japanese) (Reference No. 0618) |
| Ichikawa, T., 1988, no. 15, p. 8. |
| Ichikawa, T., 1988, no. 15, p. 169. |
| Ichikawa, T., 1983, no. 9, p. 7. |
