Marine fossils from the Moniwa Formation, distributed along the Natori River, Sendai, Northeast Honshu, Japan. Part 3. Shark teeth from the Moniwa Formation. Saito Ho–on Kai Mus. Res. Bull, 43: 9–26.
A sting ray and eagle ray from the Tatsunokuchi Formation (Pliocene) in Sendai city, Miyagi prefecture, Japan. Transactions and Proceedings of the Palaeontological Society of Japan, 57, 34–37
