Department of Biology, San Diego State University, San Diego, CA 92182, USA.
Department of Biology, Baylor University, Waco, TX 76798, USA.
Curr Biol. 2022 Apr 25;32(8):R375-R377. doi: 10.1016/j.cub.2022.03.001.
A newly discovered fossil dolphin shows that modern killer and false-killer whales evolved from fish-eating ancestors. While today both species occasionally feed on large warm-blooded prey, including seals and other whales, this diet specialization has evolved only recently.
一种新发现的化石海豚表明，现代的虎鲸和伪虎鲸是从食鱼祖先进化而来的。虽然这两个物种今天偶尔会以大型温血猎物为食，包括海豹和其他鲸鱼，但这种饮食特化只是最近才进化而来的。
