Heleosaurus
Heleosaurus is an extinct genus of non-mammalian synapsid from the Late Permian of South Africa. It was originally described as a diapsid reptile.
See also
List of pelycosaurs
References
Reisz, R. R. & Modesto, S. P. 2007. Heleosaurus scholtzi from the Permian of South Africa: a varanopid synapsid, not a diapsid reptile. Journal of Vertebrate Paleontology 27 (3): 734-739.
