One way successful cynodonts, like Thrinaxodon, might have done this is through burrowing.

成功的犬齿兽类，如 Thrinaxodon，可能通过挖洞来做到这一点。

One that's of special interest to us mammals: the cynodonts.

我们哺乳动物特别感兴趣的一种：犬齿兽类。

Meanwhile, the descendants of those little cynodonts persisted through the entire Mesozoic Era, hiding in the dinosaur's shadows.

与此同时，那些小犬齿兽类的后代， 在整个中生代一直存在，躲在恐龙的阴影下。

And in that burrow, researchers discovered the nearly complete remains of a small animal called Thrinaxodon, one of the early mammal relatives known as cynodonts.

在那个洞穴中， 研究人员发现了一种名为 Thrinaxodon 的小型动物几乎完整的遗骸，它是被称为犬齿兽的早期哺乳动物亲属之一。