| A (2 species) |
| Archelon - Late Cretaceous, 80.5 Ma |
| Atlantochelys - Late Cretaceous, 83 Ma |
| B (0 species) |
| C (3 species) |
| Calcarichelys - Early Cretaceous-Late Cretaceous,[1][2] 120-70 Ma |
| Chelosphargis - Late Cretaceous, 83 Ma |
| Cratochelone - Albian |
| D (0 species) |
| E (0 species) |
| F (0 species) |
| 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) |
| Protostega - Late Cretaceous, 83.5 Ma |
| Q (0 species) |
| R (0 species) |
| S (0 species) |
| T (0 species) |
| U (0 species) |
| V (0 species) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |