Surkov, M. V. Kalandadze, N. N. Benton, M. J. 2005 <em>Lystrosaurus georgi</em>, a dicynodont from the Lower Triassic of Russia Journal of Vertebrate Paleontology 25 402-413 Eodicynodon Robertia Diictodon Pristerodon Cistecephalus Kawingasaurus Tropidostoma Kingoria Oudenodon Aulacephalodon Pelanomodon Dicynodon_sp D_trigonocephalus Lystrosaurus_georgi L_murrayi L_mccaigi L_curvatus Kannemeyeria Rhinodicynodon Tetragonias Angonisaurus Dinodontosaurus Rechnisaurus Stahleckeria Placerias Ischigualastia Zambiasaurus Osteology Maximum Parsimony Based on reanalysis of the original matrix. Surkov_etal_2005a