Palaeothyris_acadianaMegalancosaurus_preonensisMCSNB_4751Drepanosaurus_unguicaudatusDolabrosaurus_aquatilisHypuronector_limnaiosPetrolacosaurus_kansensisLongisquama_insignisCoelurosauravusYoungina_capensisGephyrosaurus_bridensisMesosuchus_browniProlacerta_broomiMacrocnemus_bassaniiLangobardisaurus_pandolfiOrnithosuchus_longidensProterosuchus_fergusiEuparkeria_capensisArchaeopteryx_lithographicaSinosauropteryx_primaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Senter_2004abSenter_2004aa