(Ancestor,(Captorhinidae,(Araeoscelidia,(Claudiosaurus,(Younginiformes,(((Odontochelys,(Chelydra,Proganochelys)),(Kuehneosauridae,(Rhynchocephalia,Squamata))),(Trilophosaurus,((Rhynchosauria,(Choristodera,(Thalattosauria,(((((Anaro_dash_Dactylo,Serpiano_dash_Neustico),(((Simosaurus,(Germanosaurus,(Nothosaurus,Lariosaurus))),(Corosaurus,Cymatosaurus)),((Pistosaurus,Augustasaurus),(Plesiosaurus,Yunguisaurus)))),(Cyamodus,(Placodus,Paraplacodus))),((Saurosphargis,Sinosaurosphargis),(Largocephalosaurus_qianensis,Largocephalosaurus_polycarpon))),(Ichthyopterygia,(Helveticosaurus,Eusaurosphargis_BES_SC_390)))))),(Prolacertiformes,Archosauriformes)))))))));