(Petrolacosaurus,(Youngina,(((Gephyrosaurus,Squamata),(Trilophosaurus,(((Prolacerta,(Proterosuchus,Euparkeria)),(Mesosuchus,(Howesia,(Rhynchosaurus,(Stenaulorhynchus,(Scaphonyx,Hyperodapedon)))))),(((Macrocnemus,(Tanystropheus,Langobardisaurus)),(Protorosaurus,Czatkowiella)),(Megalancosaurus,Drepanosaurus))))),(Lazurussuchus,(Champsosaurus,Cteniogenys)))));