Named By: E. C. Olsen - 1937.
Synonyms: Cyniscops, Cyniscopoides, Galerhynchus kitchingi, Tangagorgon.
Classification: Chordata, Synapsida, Therapsida, Theriodontia, Gorgonopsia.
Species: C. longiceps (type), rubidgei, kitchingi, broomianus, tenuirostris
Size: Depending upon species, between 60 and 110 centimetres in length.
Known locations: South Africa.
Time period: Wuchiapingian of the Permian.
Fossil representation: Skulls.
Cyonosaurus is a genus of gorgonopsid that lived in South Africa during the late Permian. As a gorgnopsid, Cyonosaurus would have been a predator of other animals, smaller to equal in size in its self. Smaller species of Cyonosaurus with skulls about nine centimetres long grew to about sixty centimetres in length, while larger species with skulls about eighteen centimetres long reached lengths of just over a meter.
- The cranial morphology of a new gorgonopsian. - Journal of Geology, v. 65, n. 5, p. 511-527.- E. C. Olsen - 1937.
- Phylogeny and evolution of the Gorgonopsia with a special reference to the skull and skeleton of GPIT/RE/7113 ('Aelurognathus?' parringtoni) [Ph.D. Thesis] - E. V. I. Gebauer - 2007.