Riebeeckosaurus

Riebeeckosaurus is an extinct genus of tapinocephalian therapsids from the Guadalupian epoch of Tapinocephalus Assemblage Zone, lower Beaufort Beds of the Karoo, in South Africa. Only two skulls are known from the type genus.
It was a herbivorous, medium-sized dinocephalian, with a very long, slender snout and a narrow intertemporal region with a narrow sagittal crest.
In 2013, Saniye Güven and colleagues proposed that the genus Avenantia is synonymous with Riebeeckosaurus, representing an immature individual.