original description
Matsumoto [Matumoto], T. (1938). Geology of Gosyonoura Islands, Amakusa, with Special Reference to the Cretaceous Stratigraphy. <em>The Journal of the Geological Society of Japan.</em> 45(532): 1-47., available online at https://doi.org/10.5575/geosoc.45.1
page(s): 14-15, pl. 2, fig. 2, text-fig. 19 [details] Available for editors [request]
additional source
Hayami, I. (1975). A systematic survey of the Mesozoic Bivalvia from Japan. <em>University Museum, University of Tokyo, Bulletin.</em> 10: 1-249., available online at http://umdb.um.u-tokyo.ac.jp/DKankoub/Bulletin/no10/no10000.html [details]
From editor or global species database
Type locality "Loc. G-29, Kyodomari in Gosyonoura Island", Kyushu, Japan [details]