Hatai, K. & Murata, M. & Masuda, K. (1965)
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
Hovestadt, D.C. & Hovestadt-Euler, M. (2013)
Generic Assessment and Reallocation of Cenozoic Myliobatinae based on new information of tooth, tooth plate and caudal spine morphology of extant taxa. Palaeontos, 24, 1–66