Genus: Riebeeckosaurus BOONSTRA, 1952
Etymology: In honor of Jan Van Riebeeck (1619-1677), agent of the Dutch East India Company, “who 300 hundred years ago opened the door by founding (Cape Town) so that we could learn of the extinct Karroo Fauna.
= Avenantia BOONSTRA, 1952
Etymology: In honor of Jan Avenant, South African Fossil collector from the Koup, who worked with Boonstra.

Species: longirostris BOONSTRA, 1952
Etymology:

Holotype: SAM 3400

Locality: Near Vivier Siding, Beaufort West, Western Cape Province, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Tapinocephalus zone.

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

Material: Fragmentary skull, fragmentary jaw and several associated unidentified bone fragments.

Referred material:

Locality: Koup, eaufort West, Western Cape Province, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Lower Tapinocephalus zone.

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

Material:

SAM-PK-011955: Posterior portion of a skull roof.

 

= Avenantia kruisvleiensis BOONSTRA, 1952
Etymology:

Holotype: SAM-PK-009166 ( incorrectly listed as SAM 9167, as per van den Heever & Grine, 1981)

Locality: Kruisvlei, Beaufort West, Western Cape Province, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Lower Tapinocephalus zone.

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

Material: Skull lacking tip of snout and lower jaw.

Referred material:

SAM-PK-009167: Scapula, ilium, and femur.