Kobayashi, T.; Nakano, M. (1958). The Lower and Middle Cretaceous trigonians in Wakayama, Oita and Kumamoto Prefectures, West Japan. Japanese Journal of Geology and Geography. 29, 139-152.
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Kobayashi, T.; Nakano, M.
1958
The Lower and Middle Cretaceous trigonians in Wakayama, Oita and Kumamoto Prefectures, West Japan