Petromyzontidae
Ichthyomyzon bdellium (Jordan, 1885)
Ichthyomyzon castaneus Girard, 1858
Ichthyomyzon fossor Reighard & Cummins, 1916
Ichthyomyzon gagei Hubbs & Trautman, 1937
Ichthyomyzon greeleyi Hubbs & Trautman, 1937
Ichthyomyzon unicuspis Hubbs & Trautman, 1937