Cetartiodactyla includes whales, dolphins, and even-toed ungulates like deer and cattle.
鲸偶蹄目包括鲸、海豚,以及鹿和牛等偶蹄有蹄类动物。
Modern DNA evidence strongly supports placing hippos and whales together within Cetartiodactyla, reshaping older classification systems.
现代 DNA 证据强力支持把河马与鲸类一起归入鲸偶蹄目,从而改写了较早的分类体系。