| Authors(s) | Itoigawa, J., Shibata, H., Nishimoto,H. and Okumura, Y. |
| Year | 1981 |
| Title | Miocene fossils of the Mizunami Group, central Japan, 2. Molluscs. Monogr. Mizunami Foss. Mus. 3A: 1-53, 52 pls. |
| Authors(s) | Itoigawa, J., Shibata, H., Nishimoto,H. and Okumura, Y. |
| Year | 1981 |
| Title | Miocene fossils of the Mizunami Group, central Japan, 2. Molluscs. Monogr. Mizunami Foss. Mus. 3A: 1-53, 52 pls. |