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Ragozin, L. A. (1933). Plastinchatozhabernyye Prokop'yevskoy svity Kuzbassa [Bivalves of the Prokopyevskaya Formation of Kuzbass]. Zapadno-Sibirskiy Geologo-Razvedochnyy Trest. 1933: 313-321, pls 1-2.
Ragozin, L. A. (1933). Plastinchatozhabernyye Prokop'yevskoy svity Kuzbassa [Bivalves of the Prokopyevskaya Formation of Kuzbass]. Zapadno-Sibirskiy Geologo-Razvedochnyy Trest. 1933: 313-321, pls 1-2.