And you might remember from our episode on synapsids that Thrinaxodon was a burrower.

你可能还记得我们关于突触动物的那一集，Thrinaxodon 是一种穴居动物。

So the burrow probably belonged to Thrinaxodon, and Broomistega was just a visitor.

所以这个洞穴可能属于 Thrinaxodon，而 Broomistega 只是一个访客。

This scenario was also rejected based on the position of Thrinaxodon's skeleton.

根据 Thrinaxodon 骨骼的位置，该方案也被拒绝。

So, the fourth  asked, what if Thrinaxodon was already dead when Broomistega wandered in?

所以，第四个人问，如果 Broomistega 游荡进来时 Thrinaxodon 已经死了怎么办？

Thrinaxodon's roommate was actually an amphibian called Broomistega.

Thrinaxodon 的室友实际上是一种名为 Broomistega 的两栖动物。

Instead, the flow of sediment and water were able to mold Thrinaxodon's body to match the curve of the wall.

相反，沉积物和水的流动能够塑造 Thrinaxodon 的身体以匹配墙壁的曲线。

Thrinaxodon was a carnivorous proto-mammal and Broomistega was an early amphibian relative - not exactly a common pair.

Thrinaxodon 是一种肉食性原始哺乳动物，而 Broomistega 是一种早期的两栖动物亲戚——不完全是一对常见的。

So it doesn't seem like Thrinaxodon was actively snacking on that Broomistega.

所以看起来 Thrinaxodon 并没有积极地吃那个 Broomistega。

Ok then, maybe Thrinaxodon was just stashing it in the burrow to eat later?

好吧，也许 Thrinaxodon 只是把它藏在洞穴里待会儿吃？

To figure out how Thrinaxodon and Broomistega became entombed together, scientists looked at the burrow itself, along with their fossilized bones.

为了弄清楚 Thrinaxodon 和 Broomistega 是如何被埋葬在一起的，科学家们观察了洞穴本身，以及它们的骨骼化石。

Like, say, Broomistega was randomly washed into the Thrinaxodon burrow, by a flood or heavy rains.

比如说，Broomistega 被洪水或大雨随机冲入 Thrinaxodon 洞穴。

The final scenario is that maybe Thrinaxodon wasn't dead, but instead was just... sleeping.

最后一种情况是，也许 Thrinaxodon 没有死，而只是… … 在睡觉。

Okay, so what if Broomistega was dinner for Thrinaxodon?

好吧，如果 Broomistega 是 Thrinaxodon 的晚餐呢？

Thrinaxodon did eat meat, and, well, Broomistega is made of meat.

Thrinaxodon 确实吃肉，而且，Broomistega 是用肉制成的。

And it's likely that Thrinaxodon would have done this, too.

Thrinaxodon 很可能也会这样做。

If you wanna learn more about Thrinaxodon and mammalian evolution, check out our episode, " When the Synapsids Struck Back" .

如果您想了解有关 Thrinaxodon 和哺乳动物进化的更多信息，请查看我们的剧集“当突触动物反击时” 。

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。

First of all, the position of Thrinaxodon's forelimbs, to the side of its skull, looks like a natural resting position.

首先，Thrinaxodon 的前肢在其头骨一侧的位置看起来像是一个自然的休息姿势。

So, with Thrinaxodon in a deep sleep, Broomistega must've crawled into the burrow on its own.

因此，由于 Thrinaxodon 处于沉睡状态，Broomistega 一定是自己爬进了洞穴。

But one of the very-lucky very-few that will survive is an animal called Thrinaxodon.

但是，极少数能够幸存下来的幸运动物之一是一种叫做 Thrinaxodon 的动物。