Myosaurus gracilis, an anomodont reptile from the Lower Triassic of Antarctica and South Africa / W.R. Hammer and J.W. Cosgriff. 1981. The Pangaean reptile, Lystrosaurus maccaigi, in the Lower Triassic of Antarctica / J.W. Cosgriff, W.R. Hammer and W.J. Ryan. 1982.