There are these marsupial lions, and I think a big body size would have enabled them to escape predation.

还有这些有袋狮，我认为大体型能让它们躲避捕猎。

So, a marsupial lion with a super-bite, and a striding attack kangaroo.

所以，一只拥有超级咬合力的袋狮，以及一只跨步攻击的袋鼠。

So what happened to the last of the marsupial lions?

那么最后的有袋狮子发生了什么？

In Australia, there were these thylacines. There are these marsupial lions, and I think a big body size would have enabled them to escape predation.

澳大利亚有袋狼，也有袋狮，我认为雷鸟巨大的体型可以让它们逃脱被捕食的命运。

So, the fossil evidence shows that these marsupial lions survived into a time where they could've overlapped with people for potentially 20,000 years or more.

因此，化石证据表明，这些有袋狮子存活到一个它们可能与人类重叠的时代可能有 20,000 年或更长时间。

As the biggest of the marsupial lions, Thylacoleo carnifex was uniquely suited to feasting on the grazing megafauna that roamed Pleistocene Australia.

作为最大的有袋狮子，袋狮非常适合捕食更新世澳大利亚的大型食草动物。

So it looks like the family of marsupial lions descended from a lineage of ancient proto-wombats that were almost certainly small, harmless plant-eaters, too.

因此，有袋狮子家族似乎是古代袋​​熊的后裔，而袋熊几乎肯定也是小型无害的食草动物。

The fossils did take him a little by surprise, though, because the mouth of the marsupial lion was highly specialized and had an unusual dental set-up.

不过，这些化石确实让他有点惊讶，因为有袋狮子的嘴巴高度特化， 并且具有不寻常的牙齿结构。

This ecological opportunity drove the evolution of the marsupial lions, resulting in their strange patchwork of carnivorous traits that culminated in Thylacoleo carnifex.

这种生态机会推动了有袋狮子的进化，导致了它们奇怪的肉食性特征的拼凑， 最终形成了袋狮。

Thylacoleo carnifex translates to " meat-cutting marsupial lion." It was named by British naturalist Richard Owen in 1859, based on fossils that were sent to him.

Thylacoleo carnifex 翻译过来就是“切肉的有袋狮子”。它是由英国博物学家理查德·欧文于 1859 年根据寄给他的化石命名的。

These claw marks are consistent only with the size and shape of young marsupial lions, and confirm that they were excellent climbers, even in the dark.

这些爪痕仅与年轻有袋狮子的大小和形状一致，并证实它们是出色的攀爬者，即使在黑暗中也是如此。

It was the biggest and most powerful predatory marsupial ever known to have existed - one without any parallel in its environment today: the marsupial lion, Thylacoleo carnifex.

它是迄今为止已知存在的最大、最强大的掠食性有袋动物——在当今的环境中没有任何可比拟的：有袋狮子，Thylacoleo carnifex。

While Thylacoleo carnifex was the first member of the marsupial lion family to be discovered, the fossil record of this family stretches back tens of millions of years.

虽然袋狮是第一个被发现的有袋狮科成员，但该科的化石记录可以追溯到数千万年前。