科研人员近期发现了一种新的海洋哺乳动物种类—— “Ontocetus posti”，它的摄食方式与现代海象有着惊人的相似性，这体现了进化过程中的趋同现象。

The newly identified fossilized species has been named Ontocetus posti. Interestingly, this new species shares striking feeding similarities with modern walrus (Odobenus rosmarus). “Ontocetus ...