Exostinus
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Extinct genus of lizards
| Exostinus | |
|---|---|
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Anguimorpha |
| Family: | Xenosauridae |
| Genus: | †Exostinus Cope, 1873 |
| Type species | |
| †Exostinus serratus Cope, 1873
| |
| Other species | |
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| Synonyms [1] | |
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Exostinus is an extinct genus of xenosaurid lizard from the Late Cretaceous to Oligocene of the western United States. It was named in 1873 by Edward Drinker Cope as Exostinus serratus for jaw and skull bones found in the White River Formation of Colorado showing distinguishing cranial scutes. Material of E. serratus is also known from the Brule Formation, also Middle Oligocene in age, but in Wyoming. A second species, E. lancensis was named in 1928 by Charles W. Gilmore and is also known from skull and jaw bones, from the Maastrichtian Hell Creek, Lance and Fort Union Formations, and the Paleocene Tongue River Formation. Other species named by Gilmore are now considered synonyms of E. lancensis.[1]
