Species: williamsi BROOM, 1904
Etymology:
Holotype:
Locality: Kimberly mines, South Africa.
Horizon:
Biostratigraphy: Cistecephalus zone.
Age: Tatarian Age, Lopingian Subepoch, Zechstein Epoch, Late Permian.
Material: Almost complete left temporal arch, large part of maxilla, part
of left mandible and various elements of postcranial skeleton.