Genus: Arctognathus HAUGHTON, 1924 non OWEN, 1876
Etymology: Greek, arktos, “bear”, Greek, gnathos, “jaw” + us (m); Bear jaw.

Species: whaitsi HAUGHTON, 1924
Etymology:

Holotype: SAM 4337

Locality: Houd Constant, Graaff Reinet District, Eastern Cape Province, South Africa.

Horizon:

Biostratigraphy: Cistecephalus zone.

Age: Tatarian Age, Lopingian Subepoch, Zechstein Epoch, Late Permian.

Material: Fragmentary skull.