Arctognathus

Name: Arctognathus ‭(‬bear jaw‭)‬.
Phonetic: Ark-to-nay-fuss.
Named By: Robert Broom‭ ‬-‭ ‬1911.
Classification: Chordata,‭ ‬Therapsida,‭ ‬Gorgonopsidae.
Species: A.‭ ‬curvimola‭ (‬type‭)‬,‭ ‬A.‭ ‬breviceps.‭
Diet: Carnivore.
Size: 18‭ ‬centimetre skull,‭ ‬Body about‭ ‬1.1‭ ‬meters long.
Known locations: South Africa.
Time period: Late Permian.
Fossil representation: Several specimens.

       With a body length of just over one meter,‭ ‬Arctognathus was on the small side for a gorgonopsid,‭ ‬but it still would have been a potent predator in its own right.‭ ‬As of‭ ‬2013‭ ‬the only species of Arctognathus still recognised as valid are A.‭ ‬curvimola and A.‭ ‬breviceps.
       Two additional species of Arctognathus once existed,‭ ‬but these have now been assigned‭ ‬to new genera.‭ ‬Fossils of Arctognathus cookei have now been moved to Anoplosaurus,‭ ‬though they are also indeterminate.‭ ‬Arctognathus nasuta fossils have now been used to establish the type species of the genus Njalila.

Further reading
- Cranial osteology of Arctognathus curvimola, a short-snouted gorgonopsian from the Late Permian of South Africa. - Papers in Palaeontology - Christian F. Kammerer - 2014.



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