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1000万年后的始新世才真正兴起繁盛起来。

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，当时的地球要温暖得多，湿润得多。

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。

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

他们在大约 4200 万年前的始新世中期到达南美洲。

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。

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。

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大约有马那么大。

And they show up on all of the continents, except Antarctica, around the same time, in the early Eocene Epoch.

在始新世早期，它们几乎同时出现在除南极洲以外的所有大陆上。

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

因此， 当始新世结束时，北美不再有适合灵长类动物的栖息地。

One of these earliest rhino-ancestors was Hyrachyus, a lightly built herbivore from the Eocene epoch that looked kind of like a tapir.

Hyrachyus 是这些最早的犀牛祖先之一，它是一种来自始新世的轻型食草动物， 看起来有点像貘。

As they report in Nature, the critter, which lived around 55m years ago, in the Eocene epoch, seems to be the most primitive relative of tarsiers, mouse-sized primates which now inhabit the islands of South-East Asia.

这种生活在大约五千五百万年前始新世时期的动物似乎是眼镜猴（这种灵长类动物有老鼠一样的体型，现在居住在东南亚的岛屿上）最原始的亲戚。

Scientists think beavers originally evolved in North America toward the end of the Eocene Epoch, with the earliest known species scampering around Wyoming 35 million years ago.

科学家认为， 海狸最初是在始新世末期在北美洲进化而来的，已知最早的物种在 3500 万年前在怀俄明州四处奔跑。

Were the beautiful volute and cone shells of the Eocene epoch, and the gracefully sculptured ammonites of the Secondary period, created that man might ages afterwards admire them in his cabinet?

始新世美丽的蜗壳和锥壳， 以及第二时期雕刻精美的菊石， 是为了让人们在以后的岁月里在他的橱柜里欣赏它们而创造的吗？

Back at the start of the Eocene Epoch, the world was in the clutches of the Paleocene-Eocene Thermal Maximum, and warm, damp forests covered the land from pole to pole.

早在始新世初期，世界就处于古新世-始新世极热期的控制之下，温暖潮湿的森林覆盖了南北两极的土地。

By the start of the Eocene Epoch about 56 million years ago, North America was also home to omomyiforms, a group of tarsier-like primates, and adapiforms, which were more lemur-like.

到大约 5600 万年前的始新世开始时，北美也是 omomyiforms（一群像眼镜猴的灵长类动物）和 adapiforms（更像狐猴）的家园。

And by the middle of the Eocene Epoch, around 50 million years ago, its members could be found running around Germany and North America -- including the most widespread of them all: Boverisuchus.

到始新世中期，也就是大约 5000 万年前，它的成员遍布德国和北美——包括分布最广的：Boverisuchus。