CaptorhinidaePalaeothyrisPetrolacosaurusAraeoscelisCoelurosauravusApsisaurusAcerosodontosaurusYounginaPlanocephalosaurusSquamataProlacertaTrilophosaurusHyperodapedonDrepanosauridaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Renesto_etal_2010aa