| A (2 species) |
| Acanthostega - Late Devonian, 365 Ma |
| Archaeothyris - Late Carboniferous, 306 Ma |
| B (0 species) |
| C (1 species) |
| Casineria - Early Carboniferous, 340 Ma |
| D (3 species) |
| Deltaherpeton - 330 Ma |
| Dimetrodon - Cisuralian, 295-272 Ma |
| Dolerosaurus - Late Triassic, 231-228 Ma |
| E (3 species) |
| Edaphosaurus - Late Carboniferous - Early Permian, 300-280 Ma |
| Elginerpeton - Late Devonian, 375 Ma |
| Eucritta - Visean 345.3-330.9 Ma |
| F (1 species) |
| Fedexia - Late Pennsylvanian, 300 Ma |
| G (1 species) |
| Greererpeton - Visean 345.3-328.3 Ma |
| H (0 species) |
| I (1 species) |
| Ichthyostega - Late Devonian, 365-360 Ma |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (0 species) |
| N (0 species) |
| O (1 species) |
| Obruchevichthys - Unavailable |
| P (3 species) |
| Pederpes - Tournasian, Early Carboniferous 348-347.6 Ma |
| Pholiderpeton - Late Carboniferous |
| Proterogyrinus - Carboniferous 331-323 Ma |
| Q (1 species) |
| Quetzalcoatlus - Late Cretaceous, Upper Maastrichtian, 68 Ma |
| R (0 species) |
| S (2 species) |
| Seymouria - Early Permian, |
| Solenodonsaurus - Westphalian, 313-304 Ma |
| T (0 species) |
| U (0 species) |
| V (1 species) |
| Ventastega - 365 Ma Famennian (Late Devonian) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |