| Authors(s) | O'Hara, S. |
| Year | 1982 |
| Title | Molluscan fossils from the Shimosa Group (1. Yabu and Jizodo Formations of the Makuta district). J. Coll. Arts Sci. Chiba Univ. (B) 15: 27-56, 7 tabs, 3 figs, 3 pls. |
| Authors(s) | O'Hara, S. |
| Year | 1982 |
| Title | Molluscan fossils from the Shimosa Group (1. Yabu and Jizodo Formations of the Makuta district). J. Coll. Arts Sci. Chiba Univ. (B) 15: 27-56, 7 tabs, 3 figs, 3 pls. |