Literature
Authors(s) Shibata, H. and Ishigaki, T.
Year 1981
Title Heteropodous and pteropodous biostratigraphy of Cenozoic strata of Chubu Province, Japan (in Japanese with English summary). Bull. Mizunami Fossil Museum 8: 55-70, 3 tabs, 6 figs, pls 12-13.