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In the middle Eocene formations of North America occurs the more specialized Uintatherium (or Dinoceras), typifying the family Uintatheriidae.

中期的北美洲,出现更为专门的尤因他于犹因他科。

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Earth & Climate Science

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

显然,南极洲的生物多样性 之后受到了打击。

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Journeys Through Geologic Time

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。

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Earth & Climate Science

But what happened to these Eocene animals?

但是这些动物发生了什么?

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Journeys Through Geologic Time

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

结果,我们的界变暖的速度 比

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Earth & Climate Science

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

所以考虑到它的大小,它能够支持 许多不同的生态系统。

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PBS地球-动物趣闻

In the United States, Boverisuchus shows up fully-formed and ready to run in the early Eocene.

美国,,Boverisuchus 已经完全成形并准备好奔跑。

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Earth & Climate Science

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

南极洲的其他居民可能 也来自南美洲。

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Journeys Through Geologic Time

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

,气候 开慢慢变冷。

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Journeys Through Geologic Time

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

, 这些大陆上几乎所有的灵长类动物都灭绝了。

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PBS Eons | fauna&flora

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 广泛存

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经济学人-科技

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

尽管白垩纪的小行星灭绝了居统治地位的恐龙,但哺乳动物却一直到1000万年后的才真正兴起繁盛起来。

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PBS地球-动物趣闻

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,,气候开变得更凉爽和干燥。

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PBS地球-动物趣闻

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

,可能鼬科动物出现之前,我们的星球气候温暖。

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Earth & Climate Science

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,和 渐是全球降温的

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TED-Ed(视频版)

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-极热非常温暖,以至于鳄鱼北极圈的水域中游来游去。

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科拉诺斯动画科普

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,-渐过渡标志着全球变冷和冰川作用的第一个主要

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PBS地球-动物趣闻

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

让我们回到大约 4500 万年前的

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PBS地球-动物趣闻

So by the time the Eocene Epoch was over, North America no longer had the right habitat for primates.

因此, 当结束,北美不再有适合灵长类动物的栖息地。

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PBS地球-动物趣闻

And a big environmental change was also underway in the last half of the Eocene, thanks to the chemistry of mountain-building.

由于造山的化学作用,后半也发生了巨大的环境变化。

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PBS地球-动物趣闻

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

他们大约 4200 万年前的到达南美洲。

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