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