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。

Mathieu Boisville (University of Tsukuba, Japan), has uncovered a new species of the extinct genus Ontocetus from the Lower Pleistocene deposits in the North Atlantic. This species, named ...