Traits taxon details
original description
Kobayashi, T.; Nakano, M. (1958). The Lower and Middle Cretaceous trigonians in Wakayama, Oita and Kumamoto Prefectures, West Japan. <em>Japanese Journal of Geology and Geography.</em> 29, 139-152. page(s): 144, pl. 11, fig. 3 [details] Available for editors 
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