Jacobs, L. L. Winkler, D. A. Newman, K. D. Gomani, E. M. Deino, A. 2005 Therapsids from the Permian Chiweta Beds and the age of the Karoo Supergroup in Malawi Palaeontologia Electronica 8 1-23 Haptodus Dimetrodon Anteosauridae Biarmosuchus Hipposaurus Lycaenodon Rubidgina Ictidorhinus Lemurosaurus Proburnetia Bullacephalus Burnetia Mal_290 Osteology Maximum Parsimony Based on reanalysis of the original matrix. Jacobs_etal_2005a