| A (4 species) |
| Adocus - Early Cretaceous - Oligocene, 125-28 Ma |
| Allopleuron - Late Cretaceous |
| Archelon - Late Cretaceous, 80.5 Ma |
| Atlantochelys - Late Cretaceous, 83 Ma |
| B (1 species) |
| Bashuchelys - Middle Jurassic |
| C (4 species) |
| Calcarichelys - Early Cretaceous-Late Cretaceous,[1][2] 120-70 Ma |
| Chelosphargis - Late Cretaceous, 83 Ma |
| Colossochelys - Miocene-Pleistocene |
| Cratochelone - Albian |
| D (0 species) |
| E (1 species) |
| Euclastes - Unavailable |
| F (0 species) |
| G (1 species) |
| Gamerabaena - Late Cretaceous |
| H (0 species) |
| I (0 species) |
| J (0 species) |
| K (2 species) |
| Kayentachelys - Early Jurassic 196.5-183.0 Ma |
| Khunnuchelys - Turonian to Campanian, 91-75 Ma |
| L (2 species) |
| Larachelus - Early Cretaceous |
| Liaochelys - Early Cretaceous |
| M (2 species) |
| Meiolania - mid Miocene-Holocene |
| Mexichelys - Late Campanian |
| N (0 species) |
| O (0 species) |
| P (2 species) |
| Pacifichelys - Mid Miocene (Friasian-Laventan)~15.97-13.65 Ma |
| Protostega - Late Cretaceous, 83.5 Ma |
| Q (0 species) |
| R (0 species) |
| S (1 species) |
| Selenemys - Late Jurassic, 151 Ma |
| T (1 species) |
| Toxochelys - Late Cretaceous |
| U (0 species) |
| V (0 species) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |