| Authors(s) | Shibata, H. and Ujihara, A. |
| Year | 1983 |
| Title | Middle and Late Pleistocene heteropods and pteropods from Chiba, Noto Peninsula and Kikaijima, Japan. Bull. Mizunami Fossil Museum 10: 151-169, 1 tab., 1 fig., pls 43-47. |
| Authors(s) | Shibata, H. and Ujihara, A. |
| Year | 1983 |
| Title | Middle and Late Pleistocene heteropods and pteropods from Chiba, Noto Peninsula and Kikaijima, Japan. Bull. Mizunami Fossil Museum 10: 151-169, 1 tab., 1 fig., pls 43-47. |