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