Dicynodon Skull cast-Small. Middle to Late Permian. Herbivore. It was toothless except for some small tusks. Mammal-like reptile (Therapsid) found in the Karoo Formation of Leeuwenkloof, South Africa. This was cast from a UC Berkeley specimen. Name means "Two Dog-Teeth". They grew to about 1.2 meters. Cast size: 7 cm x 3.5 cm.