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