| A (2 species) |
| Acheloma - Early Permian, 279.5-272.5 Ma |
| Anconastes - Late Carboniferous |
| B (0 species) |
| C (0 species) |
| D (0 species) |
| E (0 species) |
| F (1 species) |
| Fedexia - Late Pennsylvanian, 300 Ma |
| G (0 species) |
| H (0 species) |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (0 species) |
| N (0 species) |
| O (0 species) |
| P (1 species) |
| Phonerpeton - Early Permian |
| Q (0 species) |
| R (1 species) |
| Rotaryus - Early Permian, 284-279.5 Ma |
| S (0 species) |
| T (1 species) |
| Tambachia - Early Permian, 284-279.5 Ma |
| U (0 species) |
| V (0 species) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |