Regisaurus is an extinct genus of theriodont. It is known from a single described species, the type species Regisaurus jacobi, from the Early Triassic Lystrosaurus Assemblage Zone of South Africa, although at least one undescribed species is also known.
It was a rather derived baurioid, with a robust skull, short tail, long limbs and relatively large canines. It was apparently related to Urumchia and like Urumchia, it had vomer bones, which form the secondary palate, but they do not narrow to a tip like in Urumchia. However it retained some primitive characteristics. It had six incisor teeth in each side of the jaw, whereas other baurioids had less. It was probably carnivorous, and ate insects and small vertebrates.
Discovery and species