Rhipaeosaurus
| Rhipaeosaurus Temporal range: Middle Permian, | |
|---|---|
| Life restoration (with highly speculative skull) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | †Parareptilia |
| Order: | †Procolophonomorpha |
| Family: | †Nycteroleteridae |
| Genus: | †Rhipaeosaurus Efremov, 1940 |
| Type species | |
| †Rhipaeosaurus tricuspidens Efremov, 1940 | |
Rhipaeosaurus is an extinct genus of nycteroleterid parareptile known from an articulated skeleton from the mid Middle Permian of European Russia. It contained a single species, Rhipaeosaurus tricuspidens. A bayesian analysis suggests that it is more closely related to pareiasaurs than to the other nycteroleterids, due to skull and tooth features. For this reason, "Nycteroleteridae" may be a grade rather than a clade, unless redefined to exclude Rhipaeosaurus.