(Seymouriidae,(Synapsida,(Parareptilia,(Captorhinidae,(Araeoscelidia,((Acerosodontosaurus,Kenyasaurus,Youngina,Galesphyrus,Lanthanolania,(Claudiosaurus,((Coelurosauravus,(((Choristodera,(Testudines,(Kuehneosauridae,(Rhynchocephalia,Squamata))),(Helveticosaurus,(Placodus,(Pachypleurosaurs,(Simosaurus,Pistosauridae))))),(Tanystropheus,Macrocnemus,(Prolacerta,(Trilophosaurus,Rhynchosauria,Archosauriformes)))),((Askeptosaurus,(Clarazia,Thalattosaurus)),(Ichthyopterygia,Hupehsuchus)))),(Palaeagama,Saurosternon)))),(Tangasaurus,(Hovasaurus,Thadeosaurus))))))));