| Authors(s) | Shibata, H., Ishigaki, T. and Ujihara, A. |
| Year | 1986 |
| Title | Pteropods from the Late Neogene Nishiyatsushiro and Shizukawa Groups of Shimobe, Yamanashi Prefecture, Japan. Bull. Mizunami Foss. Mus. 13: 39-55, 1 tab., 2 figs, pls 7-8. |
| Authors(s) | Shibata, H., Ishigaki, T. and Ujihara, A. |
| Year | 1986 |
| Title | Pteropods from the Late Neogene Nishiyatsushiro and Shizukawa Groups of Shimobe, Yamanashi Prefecture, Japan. Bull. Mizunami Foss. Mus. 13: 39-55, 1 tab., 2 figs, pls 7-8. |