†Moniopterus Hatai, Masuda & Noda 1974

Hatai, Masuda & Noda 1974. Marine fossils from the Moniwa Formation along the Natori River, Sendai, northeast Honshu, Japan. Part 2. Problematica from the Moniwa Formation. Transactions Proc palaeont Soc Japan (NS), No. 95 1974: 364-370