(Seymouriidae,(Synapsida,(Parareptilia,(Captorhinidae,(Araeoscelidia,(Orovenator,(Lanthanolania,(((Claudiosaurus,(((((Helveticosaurus,((Rhynchocephalia,Squamata),(Kuehneosauridae,Pamelina))),((Placodus,(Pachypleurosaurs,(Simosaurus,Pistosauridae))),(Largocephalosaurus,Sinosaurosphargis))),(Choristodera,((Prolacerta,(Tanystropheus,Macrocnemus)),(Trilophosaurus,(Rhynchosauria,Archosauriformes))))),(Coelurosauravus,Sophineta)),((Askeptosaurus,(Clarazia,Thalattosaurus)),(Wumengosaurus,((Nanchangosaurus,Hupehsuchus),(Chaohusaurus,Utatsusaurus)))))),(Youngina,Thadeosaurus)),(Tangasaurus,(Acerosodontosaurus,Hovasaurus))))))))));