Full reference: A. S. Romer. 1937. New genera and species of pelycosaurian reptiles. Proceedings of the New England Zo÷logical Club 16:89-95
Sister taxon: Aerosaurus wellesi
Type specimen: WM 464, a set of postcrania. Its type locality is El Cobre Canyon (Cutler Formation), which is in a Virgilian/Wolfcamp fluvial siliciclastic in the Abo/Cutler Formation of New Mexico.