| A (3 species) |
| Albertonectes - Late Cretaceous, 73.5 Ma |
| Alexeyisaurus - Late Triassic, 210 Ma |
| Aphrosaurus - Late Cretaceous, 70-66 Ma |
| B (0 species) |
| C (1 species) |
| Callawayasaurus - Early Cretaceous, Aptian |
| D (0 species) |
| E (2 species) |
| Elasmosaurus - Late Cretaceous, 80.5 Ma |
| Eromangasaurus - Early Cretaceous, 103 Ma |
| F (1 species) |
| Fresnosaurus - Late Cretaceous, 70-66 Ma |
| G (0 species) |
| H (1 species) |
| Hydrotherosaurus - Late Cretaceous, 70-66 Ma |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (2 species) |
| Mauisaurus - Late Cretaceous, 77 Ma |
| Morenosaurus - Late Cretaceous, 70-66 Ma |
| N (0 species) |
| O (0 species) |
| P (0 species) |
| Q (0 species) |
| R (0 species) |
| S (1 species) |
| Styxosaurus - Late Cretaceous, 83.5-80.5 Ma |
| T (3 species) |
| Terminonatator - Late Cretaceous, Campanian |
| Thalassomedon - Late Cretaceous, 95 Ma |
| Tuarangisaurus - Late Cretaceous, 78 Ma |
| U (0 species) |
| V (1 species) |
| Vegasaurus - Late Cretaceous, 72 Ma |
| W (1 species) |
| Woolungasaurus - Early Cretaceous |
| X (0 species) |
| Y (0 species) |
| Z (1 species) |
| Zarafasaura - Late Cretaceous, Maastrichtian |