| Rhipaeosaurus Temporal range: Middle Permian,
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|---|---|
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| Life restoration (with highly speculative skull) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| 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.[1] 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.[2]
- ^ Tsuji, Linda A.; Müller, Johannes; Reisz, Robert R. (1 January 2012). "Anatomy of Emeroleter levis and the phylogeny of the nycteroleter parareptiles" (PDF). Journal of Vertebrate Paleontology. 32 (1): 45–67. doi:10.1080/02724634.2012.626004. S2CID 55268829.
- ^ "Palaeos Vertebrates Anapsida: Nycteroleteridae". palaeos.com. Retrieved 2018-03-11.