Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)

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Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)
  • Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)
  • Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)
  • Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)

  • Abyssomedon Williamsi (Parareptile) Richards spur, Oklahoma (USA)

  • This is a complete humerus from this rare early reptile. Measures approx- 33mm long.
  • £37.00
Each fossil is one of a kind, but a similar fossil may still be available to purchase.

Abyssomedon (meaning "Guardian of the Abyss") is an extinct genus of a nyctiphruretid parareptile known from Early Permian (Artinskian age) fissure fills at Richards Spur in Comanche County, Oklahoma, south-central United States. It contains a single species, A. williamsi, which represents the oldest known nyctiphrureptid species and the first to be discovered in North America. Abyssomedon is known solely from the holotype BMRP 2008 33a, a partial skeleton housed at the Burpee Museum of Natural History at Rockford, Illinois. The specimen consists of a semi-articulated partial skull and disarticulated but associated postcranial remains. 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 found in Early Permian fissure fills in Ordovician limestone.