Protosirenidae
Extinct family of aquatic mammals
From Wikipedia, the free encyclopedia
Protosirenidae is an extinct primitive family of the order Sirenia.[2][3]
| Protosirenidae Temporal range: | |
|---|---|
 | |
| The skeleton of Protosiren | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Order: | Sirenia |
| Family: | †Protosirenidae Sickenberg, 1934 |
| Genera | |
| |
Protosirenids are thought to have been amphibious quadrupeds, meaning that they spent their time both on land and in the water and had four legs.[4]
