| A (0 species) |
| B (0 species) |
| C (0 species) |
| D (0 species) |
| E (1 species) |
| Eremotherium - Late Pliocene - Early Holocene, 4.9-0.011 Ma |
| F (0 species) |
| G (0 species) |
| H (0 species) |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (3 species) |
| Megalonyx - late Miocene to Pleistocene, 10.3-0.011 Ma |
| Megatherium - Early Pliocene[1] to Early Holocene, 5-0.010 Ma Possible later date of 0.008 Ma |
| Mylodon - Pleistocene to Holocene |
| N (0 species) |
| O (0 species) |
| P (1 species) |
| Paramylodon - late Pliocene to Pleistocene |
| 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) |