| Leontiniidae | |
|---|---|
| Leontinia gaudryi | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Notoungulata |
| Clade: | †Eutoxodontia |
| Family: | †Leontiniidae Ameghino, 1895 |
| Genera | |
| |
Leontiniidae is an extinct family comprising eighteen genera of notoungulate mammals known from the Middle Eocene (Mustersan) to Late Miocene (Huayquerian) of South America.