Clearly, Antarctica’s biodiversity took a hit after the Eocene.

显然，南极洲物多样性 在始新世之后受到了打击。

Eocene, so, by about 40 million years ago, many of them had gone extinct.

，因此，到大约 4000 万年前， 其中许多已经灭绝。

But what happened to these Eocene animals?

但是这些始新世动物发了什么？

As a result, our world is warming faster than it did back in the Eocene.

结果，我们世界暖速度 比始新世早。

So given its size, it was able to support many different ecosystems in the Eocene.

所以考虑到它大小，它能够支持 始新世许多不态系统。

Other residents of Eocene Antarctica probably came from South America as well.

始新世南极洲其他居民可能 来自南美洲。

Over the course of the Eocene epoch, the climate slowly began to cool.

在始新世时期，气候 开始。

By the late Eocene, practically all of the primates on those continents died out.

到始新世晚期， 这些大陆上几乎所有灵长类动物都灭绝了。

Floristic Region, but their family was clearly much more widespread during the Eocene Epoch.

植物区地区发现，但它们科显然 要远得多 在始新世时期广泛存在。

Though the Cretaceous asteroid cleared the stage, mammals did not really get going until 10m years later, in the Eocene epoch.

尽管白垩纪时期小行星灭绝了居统治地位恐龙，但哺乳动物却一直到1000万年后始新世才真正兴起繁盛起来。

But about 49 million years ago, in the mid-Eocene, the climate began to get cooler and drier.

但大约 4900 万年前，在始新世中期，气候开始得更凉爽和干燥。

In the early Eocene Epoch, probably before mustelids appeared, our planet had a warm climate.

在始新世早期，可能在鼬科动物出现之前，我们星球气候温暖。

What we do know is that the late Eocene and early Oligocene was a time of global cooling.

我们所知道是，始新世晚期和 渐新世早期是全球降温时期。

The Paleocene-Eocene Thermal Maximum, 55 million years ago, was so warm, crocodiles swam the waters of the Arctic Circle.

5500 万年前古新世-始新世极热期非常温暖，以至于鳄鱼在北极圈水域中游来游去。

Around 34 million years ago, the Eocene-Oligocene Transition  marked the first major period of global cooling and glaciation.

大约 3400 万年前，始新世-渐新世过渡标志着全球和冰川作用第一个主要时期。

Let's rewind back to the Eocene, about 45 million years ago.

让我们回到大约 4500 万年前始新世。

And they arrived in South America by the middle Eocene Epoch, around 42 million years ago.

他们在大约 4200 万年前始新世中期到达南美洲。

Or there's the Eocene, more than 34 million years ago, a hothouse time during which the continents drifted into their present configuration.

或者是超过 3400 万年前始新世，这是一个温室时代，在此期间大陆逐渐成了现在形态。

You see the Amazon formed during the Eocene epoch, up to 56 million years ago when the whole world was a lot warmer and wetter.

你可以看到亚马逊河形成于始新世时期，距今约5600万年前，当时地球要温暖得多，湿润得多。

For example, Juxia from the Late Eocene epoch of China was about the size of a horse.

例如，中国始新世晚期巨霞大约有马那么大。