| A (0 species) |
| B (0 species) |
| C (1 species) |
| Captorhinus - Cisuralian, 280-270.6 Ma |
| D (1 species) |
| Dimetrodon - Cisuralian, 295-272 Ma |
| E (1 species) |
| Edaphosaurus - Late Carboniferous - Early Permian, 300-280 Ma |
| F (0 species) |
| G (0 species) |
| H (1 species) |
| Hovasaurus - Changhsingian - Induan 253.8-249.7 Ma |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (0 species) |
| N (0 species) |
| O (0 species) |
| P (0 species) |
| Q (1 species) |
| Quetzalcoatlus - Late Cretaceous, Upper Maastrichtian, 68 Ma |
| R (0 species) |
| S (0 species) |
| T (1 species) |
| Titanosuchus - Capitanian, 265 Ma |
| U (0 species) |
| V (1 species) |
| Venjukovia - Middle Permian, 267 Ma |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |