And that feature is only found in artiodactyls.

而那个特征仅存在于偶蹄目中。

Some very early cetaceans have this ankle bone, too, which tells us that cetaceans evolved from artiodactyls.

一些非常早期的鲸目也有这种距骨，这告诉我们鲸目是从偶蹄目进化而来的。

In other words, if Ambulocetus represents the transition from land to water, then Indohyus represents the transition from artiodactyls to whales.

换句话说， 如果 Ambulocetus 代表从陆到水的，那么 Indohyus 代表从偶蹄到鲸鱼的。

And these comparisons showed that cetaceans are actually most closely related to a group known as artiodactyls, hoofed mammals that includes hippos, pigs, and deer.

这些比较显示，鲸目实际上与一类被称为偶蹄目的哺乳关系最密切，偶蹄目包括河马、猪和鹿等有蹄类。

Unlike Ambulocetus, it's not a member of the immediate whale family, but it shares a common ancestor with them, helping to connect today's artiodactyls.

与步行游泳鲸不同， 它不是鲸目的直系成员，但它与它们共享一个共同祖先，有助于连接今天的偶蹄目。