Traits name details
original description
(of Protounio cardiiformis Martinson, 1953 †) Martinson, G.G. (1953). Novyye unionidy iz verkhnemelovykh otlozheniy Mongolii [New unionids from Upper Cretaceous deposits of Mongolia]. <em>Doklady Akademii Nauk SSSR.</em> 89(1): 167-170. page(s): 168, figs 1, 2 [details] Available for editors 
basis of record
Martinson, G. G. (1961). Mezozoiskie i Kaynozoyskie Molluski Kontinentalnykh Otlozheniy Sibirskoy Platformy, Zabaykalya i Mongolii [Mesozoic and Cenozoic Mollusca of the continental deposits of the Sibirican platform, Transbaikalia and Mongolia]. <em>Trudy Baikal'skoi Limnologicheskoi Stantsii [Transactions of Baikalian Limnologic Station].</em> 19:1–332 p., 26 pl. In Russian. page(s): 202-203, pl. 13, figs 1, 2 [details] Available for editors 
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