| Pantosteus plebeius (Baird & Girard, 1854) |
| Ptychostomus Agassiz, 1855 |
| Ptychostomus albidus Girard, 1856 |
| Scartomyzon Fowler, 1913 |
| Scartomyzon austrinus (Bean, 1880) |
| Scartomyzon congestus (Baird & Girard, 1854) |
| Sclerognathus Valenciennes, 1844 |
| Sclerognathus meridionalis Günther, 1868 |
| Xyrauchen Eigenmann & Kirsch, 1889 |
| Xyrauchen texanus (Abbott, 1860) |