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

Reference: Jordan, D. S. & B. W. Evermann. 1896. The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part I. Bull. U. S. Natl. Mus. No. 47: i-lx + 1-1240.