Surkov, M. V. Benton, M. J. 2004 The basicranium of dicynodonts (Synapsida) and its use in phylogenetic analysis Palaeontology 47 619-638 Eodicynodon Emydops Robertia Pristerodon Diictodon Kingoria Dicynodon Aulacocephalodon Lystrosaurus Kannemeyeria Rechnisaurus Stahleckeria Rhadiodromus Angonisaurus Shansiodon Tetragonias Placerias Sangusaurus Uralokannemeyeria Osteology Maximum Parsimony Based on reanalysis of the original matrix. Surkov_et_Benton_2004a