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