You should probably go to the dinosaurs, like the Jurassic period.

你也许应该去恐龙还未灭绝的时代，比如侏罗纪公园时期。

That made it a mid-size predator in the late Jurassic period.

这使之成为侏罗纪晚期中等体型的掠食者。

Allosaurus became the ultimate predator of the Jurassic period.

异特龙成为了侏罗纪时期的终极掠食者。

We're standing in front of a cabinet from the Jurassic period.

我们现在站在侏罗纪世纪的展柜前。

During the Jurassic period, Allosaurus was the most sophisticated predator.

在侏罗纪时期，异特龙是最先进的掠食者。

Throughout the Jurassic period, the earth climate was hot and humid.

在整个侏罗纪时期，地球气候又热又湿。

But after volcanic eruptions took out their competitors and ushered in the Jurassic period, everything changed.

但火山爆发后，杀光了他们的竞争对手，并迎来了侏罗纪时期，一切都改变了。

It lived in western North America during the late Jurassic period from 156 to about 145 million years ago.

它在一亿五千六百万年前到一亿四千五百万年前生活于晚侏罗纪时期的北美西部。

At the end of the Jurassic period, the earth had begun to cool.

在侏罗纪末期，地球开始变冷。

They were the most common long-necked dinosaurs of the late Jurassic period.

它们是侏罗纪晚期最常见的长颈恐龙。

156 million years ago, during the Jurassic period, the oceans were more widespread than at any time on earth.

一亿五千六百万年前，正值侏罗纪时期，海洋在地球上覆盖范围为史上之最。

At the end of the Jurassic period, large dinosaurs like Allosaurus and Ceratosaurus vanished.

在侏罗纪末期，像异特龙跟角鼻龙这样的大恐龙都已不见踪迹。

Funnel-web spiders are an ancient group, believed to have emerged about 150m years ago, near the end of the Jurassic period.

漏斗网蜘蛛是一个古老的种群，据信出现于1.5亿年前，接近侏罗纪末期。

And it appears they began flocking together much earlier than we used to think—just as the Jurassic period began to unfold.

它们开始聚集的时间比我们之前认为的早很多——在侏罗纪时代早期就这样了。

During the Jurassic period over 115 million years ago, Ceratosaurus stood out as an apex predator.

在一亿一千五百万年前的侏罗纪时期，角鼻龙是顶级掠食者。

The Abelisaurids are a group of meat eating dinosaurs, descendents of creatures similar to Ceratosaurus from the Jurassic period.

阿贝力龙是一组肉食恐龙，是类似于侏罗纪时期角鼻龙的生物的后代。

And it appears they began flocking together much earlier than we used to think-just as the Jurassic period was beginning to unfold.

它们聚集在一起的时间似乎比我们过去认为的-—侏罗纪时期开始出现，要早得多。

At the end of the Jurassic period, something big happens and it causes the extinction of a lot of different dinosaurs.

在侏罗纪时期结束时，有一个大事件导致了很多种不同恐龙走向灭绝。

Okay, now the Mastodon is from the semi-late Jurassic period.

接下来这头乳齿象 是来自侏罗纪中后期。

Okay, now the Mastodon is from the semi-late Jurassic period.

真的吗? 当然!