†Cuneopsis (Procuneopsis) okuyamai Matsuoka 1988

Matsuoka 1988. Pliocene freshwater bivalves (Lamprotula and Cuneopsis: Unionidae) from the Iga Formation, Mie Prefecture, central Japan. Transactions and Proceedings of the Palaeontological Society of Japan New Series, No. 149 1988: 417-429