Pristerognathus

Pristerognathus
Temporal range: Middle Permian
Restoration of two P. vanderbyli
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Order: Therapsida
Suborder: Therocephalia
Infraorder: Scylacosauria
Family: Scylacosauridae
Genus: Pristerognathus

Pristerognathus is an extinct genus of therocephalian, known from the late Middle Permian (Capitanian) of South Africa.[1] It lends its name to the Pristerognathus Assemblage Zone of the Beaufort Group of South African geological strata. Pristerognathus was a medium-sized therocephalian with a 25 cm skull and a total length up to 1.5 m (4.9 ft).[2]

These animals were roughly dog-sized, and are characterized by long, narrow skulls with large canines. They are likely to have lived in woodlands,and preyed on smaller therapsids and millerettids of the time.[3]

Pristerognathus was discovered in 1895 by Seeley.Three species are known: P. baini, P. polyodon and P. vanderbyli.[4] There has also been a fourth species P. minor, but this has been moved to Pristerognathoides.

See also

References

  1. F. Abdala, B. Rubidge, and J. van der Heever, "The oldest therocephalians (Therapsida, Eutheriodonta) and the early diversification of Therapsida," Palaeontology, 51, 1011-1024 (2008)
  2. Stainford Kemp, Thomas(2005) The origin and evolution of mammals p.55
  3. http://dinosaurs.about.com/od/predinosaurreptiles/p/pristerognathus.htm
  4. http://www.paleofile.com/Theriodontia/Pristerognathus.asp