| Polymorphis | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Litopterna |
| Family: | †Macraucheniidae |
| Subfamily: | †Cramaucheniinae |
| Genus: | †Polymorphis Roth, 1899 |
| Type species | |
| †Polymorphis lechei Roth, 1899
| |
| Synonyms | |
| |
Polymorphis is an extinct genus of litopterns belonging to the family Macraucheniidae. It lived during the Middle Eocene of Argentina.