Full reference: E. T. Newton. 1893. On some New Reptiles from the Elgin Sandstones. Transactions of the Royal Society of London, Series B, Biological Sciences 184:431-503
Parent taxon: Dicynodontia according to E. T. Newton 1893
Sister taxa: Angonisaurus, Brachyprosopus, Brachyuraniscus, Broilius, Cerataelurus, Colobodectes, Compsodon, Dicynodontidae, Dicynodontipus, Diictodontia, Diictodontidae, Dolichuranus, Emydorhinus, Endothiodontia, Endothiodontidae, Eodicynodon, Eodicynodontia, Eodicynodontidae, Eosimops, Eumantelliidae, Haughtoniana, Heuneus, Kannemeyeriidae, Kannemeyeriiformes, Katumbia, Kingoridae, Koupia, Newtonella, Parringtoniella, Pentasauropus, Pristerodontia, Pristerodontoidea, Pylaecephalidae, Rhinodicynodon, Shansiodontidae, Stahleckeriidae, Therapsipus, Therochelonia, Venjukoviamorpha
Subtaxa: Gordonia duffiana, Gordonia huxleyana, Gordonia juddiana, Gordonia traquairi
Type: Gordonia traquairi
Ecology: herbivore