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