Notostylopidae is an extinct family comprising five genera of notoungulate mammals known from the Late Paleocene (Riochican) to Early Oligocene (Tinguirirican) of Argentina, Brazil and Chile in South America[1]
| Notostylopidae | |
|---|---|
 | |
| Skull of Notostylops | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Notoungulata |
| Suborder: | †Notioprogonia |
| Family: | †Notostylopidae Ameghino 1897 |
| Genera | |
†Boreastylops | |