Genus: Ptychocynodon SEELEY, 1904
Etymology: Greek, ptykh- (ptyx), “fold, ridge” and Greek, knyodon, “canine tooth”: Ridged canine tooth.

Species: pentangulatus SEELEY, 1904
Etymology:

Holotype: BMNH R3519

Locality: Burgersdorp District, Eastern Cape Province, South Africa.

Horizon: Burgersdorp Formation, Tarkastad Subgroup.

Biostratigraphy: Cynognathus zone.

Age: Spathian Stage, uppermost Scythian Epoch to Anisian Stage, lowermost Mid Triassic Epoch, Early to Middle Triassic.

Material: 2 sections of a tooth.