original description
(of Nippononaia (Mekongiconcha) subquadrata T. Kobayashi, 1968 †) Kobayashi, T. (1968). The Cretaceous non-marine pelecypods from the Nam Phung Dam site in the northeastern part of the Khorat Plateau, Thailand with a note on the Trigonioididae. <em>Geology and Paleontology of Southeast Asia.</em> 4: 109-138, pl. 20-23. Tokyo.
page(s): 132, pl. 20, fig. 5 [details] Available for editors [request]
From editor or global species database
New combination Combination established herein, for consistency with genus level synonymy. [details]