Třída: Petromyzontida - mihule
Řád: Petromyzontiformes - mihulotvaří
Čeleď: Petromyzontidae - mihulovití

Reference: Girard, C. F. 1858. Fishes. Pp. i-xiv, 1-400, Pls. 7-8, 13-14, 17-18, 22c, 26, 29-30, 34, 37, 40-41, 48, 53, 59, 61, 64-65, 71 In: General report upon zoology of the several Pacific railroad routes, 1857. In: Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, v. 10. Beverley Tucker, Washington, D.C. Fishes Railroad Surv.