YounginaSquamataGephyrosaurusDiphydontosaurusPlanocephalosaurusPalaeopleurosaurusPolysphenodonBrachyrhinodonClevosaurusHomoeosaurusKallimodonSapheosaurusEilenodonToxolophosaurusCynosphenodonSphenodonOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Reynoso_1996a