OutgroupAigialosaurus_dalmaticusAigialosaurus_buccichiCarsosaurusHalisaurusClidastesTylosaurusMosasaurusEctenosaurusPlatecarpusConiasaurus_crassidensConiasaurus_gracilodensOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Caldwell_1999b