Project 3187: J. A. Hopson, J. W. Kitching. 2001. A probainognathian cynodont from South Africa and the phylogeny of nonmammalian cynodonts. Early Evolution of the Synapsida (book). 156:5-35.
Hopson, J. A. and Kitching, J. W. 2001. A probainognathian cynodont from South Africa and the phylogeny of nonmammalian cynodonts. Early Evolution of the Synapsida (book). Vol. 156, pp. 5-35.