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