Taxa Count: 16

PETROMYZONTIDAE

Ichthyomyzon bdellium

Ichthyomyzon castaneus

Ichthyomyzon fossor

Ichthyomyzon gagei

Ichthyomyzon greeleyi

Ichthyomyzon unicuspis

Lampetra aepyptera

Lampetra appendix

Lampetra danfordi

Lampetra lethophaga

Lampetra richardsoni

Lampetra tridentatus

Lethenteron camtschaticum

Petromyzon marinus