PetrolacosaurusYounginaChampsosaurusCteniogenysLazarussuchusSquamataGephyrosaurusMacrocnemusLangobardisaurusTanystropheusMegalancosaurusDrepanosaurusProtorosaurusTrilophosaurusMesosuchusHowesiaProlacertaProterosuchusEuparkeriaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Modesto_et_Sues_2004a