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Numerous parareptile lineages appeared during the early Permian and the group reached a cosmopolitan distribution. Parareptile diversity declined towards the end of the Permian and procolophonoids, which first appeared during the Late Permian, were the only group of parareptiles to survive the Permian–Triassic extinction event. Procolophonid ...
Acleistorhinus (ah-kles-toe-RYE-nuss) is an extinct genus of parareptile known from the Early Permian (middle Kungurian stage) of Oklahoma. [1] It is notable for being the earliest known anapsid reptile yet discovered.
Acleistorhinidae is notable for being the oldest-known parareptilian clade. The family is diagnosed by the presence two synapomorphies : (1) the largest tooth is located far anteriorly on the maxilla ; and (2) cranial ornamentation consists of sparse and shallow circular dimples.
Carbonodraco is the oldest known parareptile, and is slightly older than Erpetonyx, the previously oldest known parareptile. Specimens of Carbonodraco are limited to skull and jaw fragments found at the Ohio Diamond Coal mine in Linton, Ohio.
The discovery of Erpetonyx helped to shorten this gap between parareptile and eureptile fossils, as Erpetonyx lived in the Late Carboniferous and is one of the oldest known parareptiles (though Carbonodraco is now known to be older). However, it was not closely related to ancestral parareptiles, so its discovery also indicated that the initial ...
YouTube’s oldest video appeared to have been briefly overtaken this week – before it became clear that the site had been struck by a bug. The site’s first uploaded video – named ‘Me at ...
BMRP 2008 33a was discovered in 2008 in a claystone and conglomerate nodule found at Oklahoma Museum of Natural History (OMNH) Locality V51. This site, known as Richards Spur, is located just west of U.S. Highways 62 & 281, 10.5 miles south of Apache and 6 miles north of Fort Sill, of Comanche County, Oklahoma. The fossils of Richards Spur are ...
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