Genus: Pegomastax SERENO, 2012
Etymology: Greek, pegos, "strong" and Greek, mastax, "jaw": Strong Jaw.

Species: africanus SERENO, 2012
Etymology: In reference to Africa, where the specimen was found.

Holotype: SAM-PK-K10488

Locality: Vosizane ("Voisana", Foisani), 30'34"S, 27'26"E, Transkei (Herschel) District, Eastern Cape Province, South Africa.

Horizon: Upper Elliot Formation.

Biostratigraphy:

Age: Hettangian-Lower Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material Fragmentary skull preserving right and left dentaries and the predentary.: