Třída: Chondrichthyes - paryby
Řád: Rajiformes - rejnoci
Čeleď: Rhinobatidae - pilohřbetovití

Reference: Günther, A. 1867. On the fishes of the states of Central America, founded upon specimens collected in fresh and marine waters of various parts of that country by Messrs. Salvin and Godman and Capt. J. M. Dow. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London 1866 (pt 3): 600-604.