| A (1 species) |
| Attenborosaurus - Early Jurassic |
| B (0 species) |
| C (2 species) |
| Colymbosaurus - Callovian to late Tithonian |
| Cryptoclidus - Middle Jurassic, 166-164 Ma |
| D (1 species) |
| Dolichorhynchops - Late Cretaceous, 93.5-70.6 Ma |
| E (1 species) |
| Edgarosaurus - Early Cretaceous |
| F (0 species) |
| G (0 species) |
| H (0 species) |
| I (0 species) |
| J (0 species) |
| K (2 species) |
| Kaiwhekea - Late Cretaceous, 70-69 Ma |
| Kimmerosaurus - 150.8-145.5 Ma Late Jurassic, Tithonian |
| L (0 species) |
| M (0 species) |
| N (0 species) |
| O (0 species) |
| P (2 species) |
| Plesiopleurodon - Late Cretaceous, 98 Ma |
| Plesiosaurus - Early Jurassic, 199.6-175.6 Ma |
| Q (0 species) |
| R (0 species) |
| S (1 species) |
| Sulcusuchus - Late Cretaceous |
| T (2 species) |
| Thililua - Late Cretaceous, Turonian |
| Tricleidus - Middle Jurassic, Callovian |
| U (0 species) |
| V (1 species) |
| Vinialesaurus - Late Jurassic, Oxfordian |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |