| A (2 species) |
| Acrophyseter - Late Miocene (Laventan-Montehermosan)~13.65-5.332 Ma |
| Albicetus - Langhian |
| B (1 species) |
| Brygmophyseter - Miocene |
| C (0 species) |
| 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 (1 species) |
| Livyatan - Tortonian (Chasicoan)~9.9-8.9 Ma (possible Zanclean occurrence) |
| M (0 species) |
| N (0 species) |
| O (0 species) |
| P (0 species) |
| 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 (1 species) |
| Zygophyseter - Tortonian |