Třída: Chondrichthyes - paryby
Řád: Rajiformes - rejnoci
Čeleď: Rajidae - rejnokovití

Reference: Ishiyama, R. 1952. Studies on the rays and skates belonging to the family Rajidae, found in Japan and adjacent regions. 4. A revision of three genera of Japanese rajids with descriptions of one new genus and four new species mostly occured in northern Japan. J. Shimonoseki Coll. Fish. v. 2 (no. 2): 1-34, Pls. 1-4.