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

Reference: Ayres, W. O. 1854. [Description of new fishes from California.] (Minutes of Academy meetings were printed in "The Pacific" (a newspaper) shortly after each meeting. New species date to publication in The Pacific. Dates of publication are given in each species account). The Pacific v. 3 and 4 (thru no. 6).