| A (3 species) |
| Aerosaurus - Early Permian, 295 Ma |
| Apsisaurus - Early Permian |
| Archaeovenator - Late Carboniferous, 300 Ma |
| B (0 species) |
| C (0 species) |
| D (0 species) |
| E (1 species) |
| Elliotsmithia - Late Permian |
| F (0 species) |
| G (0 species) |
| H (1 species) |
| Heleosaurus - Middle Permian, 270-290 Ma |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (1 species) |
| Mesenosaurus - Late Permian |
| N (0 species) |
| O (1 species) |
| Ophiacodon - Late Carboniferous to Early Permian 306-280 Ma |
| P (1 species) |
| Pyozia - Middle Permian, 265.8-263 Ma |
| Q (0 species) |
| R (0 species) |
| S (1 species) |
| Stereorhachis - Late Carboniferous |
| T (0 species) |
| U (0 species) |
| V (0 species) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |