| Reiszorhinus Temporal range: Early Permian | |
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| Life Restoration | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Family: | † Captorhinidae |
| Genus: | † Reiszorhinus Sumida et al., 2010 |
| Species: | †R. olsoni |
| Binomial name | |
| †Reiszorhinus olsoni Sumida et al., 2010 | |
Reiszorhinus is an extinct genus of captorhinid tetrapods known from the Early Permian of the United States. [1] The type species is Reiszorhinus olsoni. Fossils have been found from the Waggoner Ranch Formation in north-central Texas. It is distinguishable by its recurved teeth and extremely large Meckelian foramen on the inner surface of the lower jaw. It has been considered a primitive member of its family because it has a single tooth along the margins of the jaws. While most single-tooth-rowed captorhinids are small, Reiszorhinus is relatively large. However, Reiszorhinus differs from other large captorhinids in that the cheek region is not wide and expanded. [1]
Reiszorhinus olsoni was first named in 2010. Specimens belonging to the species were previously misidentified as those of the similar captorhinid Labidosaurus hamatus . Reiszorhinus is one of the most basal captorhinids, along with the genera Romeria , Concordia , and Protocaptorhinus . [1]
