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

显然，南极洲的生物多样性 在始新世之后受了打击。

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

，因此， 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生了什么？

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

结果，我们的世界变暖的速度 比始新世早。

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

所以考虑它的小，它能够支持 始新世许多不同的生态系统。

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

始新世南极洲的其他居民可能 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 开始慢慢变冷。

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

始新世晚期， 这些陆上几乎所有的灵长类动物都灭绝了。

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

植物区的地区发现，但它们的科显然 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.

尽管时期的小行星灭绝了居统治地位的恐龙，但哺乳动物却一直1000万年后的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 4900 万年前，在始新世中期，气候开始变得更凉爽和干燥。

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，我们的星球气候温暖。

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

我们所知道的是，始新世晚期和 渐新世早期是全球降温的时期。

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

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

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

3400 万年前，始新世-渐新世过渡标志着全球变冷和冰川作用的第一个主要时期。

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

让我们回 4500 万年前的始新世。

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

他们在 4200 万年前的始新世中期达南美洲。

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 万年前的始新世，这是一个温室时代，在此期间陆逐渐变成了现在的形态。

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.

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

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

例如，中国始新世晚期的巨霞有马那么。