Arctognathus

Arctognathus is a small gorgonopsid characterized by a short and rounded snout. Two species, A. curvimola and A. breviceps are currently recognized with two other more questionable ones, A. cookei and A. nasuta. I Name Arctognathus curvimola Authority (Owen, 1876) Broom, 1911 Meaning of generic name Bear jaw Size Skull length: 18 cm ,Length: 1.1 m? Remains Holotype (BMNH 47339): badly preserved skull Referred specimens: SAM 3329 (skull, holotype of Lycaenodontoides bathyrhinus); BPI 174 (skull, holotype of Lycaenops pricei) Age and Distribution Horizon: Cistecephalus assemblage zone, Beaufort group, Upper Permian (Wuchiapingian). Type locality: Karoo basin, South Africa. Classification Synapsida Therapsida Gorgonopsia Gorgonopsidae Further Reading Broom, R., 1911. On some New South African Permian Reptiles: Proceedings of the Zoological Society of London, 1911, p. 1073-1082. Gebauer E., 2007. Phylogeny and Evolution of the Gorgonopsia with a Special Reference to the Skull and Skeleton of GPIT/RE/7113, doctoral dissertation. Synonyms Lycosaurus curvimola Owen, 1876; Aelurosaurus curvimola (Owen, 1876); Lycaenodontoides bathyrhinus Haughton, 1929; Lycaenops pricei Broom & Robinson, 1948

A. curvimola, image by Nobu Tamura (click to enlarge)

II Name Arctognathus breviceps Authority (Boonstra, 1934) Size Skull length: ,Length: Remains Holotype (SAM 9345): skull Age and Distribution Horizon: Cistecephalus assemblage zone, Beaufort group, Upper Permian (Wuchiapingian). Type locality: Karoo basin, South Africa. Classification Synapsida Therapsida Gorgonopsia Gorgonopsidae Further Reading Boonstra, L. D., 1934. A contribution to the morphology of the gorgonopsia: Annual of the South African Museum, v. 31, part 2, p. 137-174. Gebauer E., 2007. As above. Synonyms Arctognathoides breviceps Boonstra, 1934