Genus: Scylacognathus BROOM, 1913
Etymology: Greek, skylak- (skylax), “young dog”, Greek, gnathos, “jaw” + us (m): Dog jaw.

Species: parvus BROOM, 1913
Etymology:

Holotype: AMG 3751

Locality: Hottentots River, Beaufort West District, Western Cape Province, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Tapinocephalus zone (Dinocephalian zone KEYSER, 1979, SACS, 1980, KEYSER & SMITH, 1977-78, Lower Tapinocephalus zone, KITCHING, 1970, 1977, WATSON, 1914).

Age: Early Tatarian age, Guadelupian Stage, Middle Zeichstein Epoch, Middle Permian.

Material: Fragmentary skull.

Referred material:

= Scylacognathus major BROOM, 1935
Etymology:

Holotype: TMP 256

Locality: Leeuwklooff, Beaufort West District, Western Cape Province, South Africa.

Horizon:

Biostratigraphy: Cistecephalus zone.

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

Material: Fragmentary skull.

Referred material:

Locality: Unknown, South Africa.

Horizon:

Biostratigraphy: Equivalent to the Dicynodon Assemblage zone (formerly Dicynodon lacerticeps-Whaitsia zone of KEYSER, 1979, SACS, 1980, Daptocephalus zone of KITCHING, 1970, 1977, Upper Cistecephalus Zone of WATSON, 1914).

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

Material:

BP 399: Fragmentary skull.