The next one happened about 100 million years later during the Cenozoic era, after the extinction of the dinosaurs and the rise of mammals.

下一次发生在大约1亿年后新生代，当时恐龙灭绝和哺乳动物崛起。

I'm going to delete " cretaceous, " I'm going to delete " Cenozoic" and I'm going to delete " iridium."

删除“白垩纪”、“新生代”、“铱”。

The meteorite killed off the dinosaurs and started the Cenozoic Era, or what is known as the age of mammals.

那颗陨石杀死了恐龙，开启了新生代，也就是众所周知哺乳动物时代。

They met during a conference on the Cenozoic area, where they presented their research on the impact of meteorites on the extinction of cold-blooded organisms.

他们在一次关于新生代地区会议上遇，在那里他们展示了陨石对冷血动物灭绝影响研究。

Cenozoic. You probably won't get on that, but I'll leave it to make the story more fun.

新生代。你可能不会遇到，但会利用它让故事更有趣。

Free of competition from the tree-dwelling opposite birds, a lot of neoavians quickly took to life in trees at the dawn of the Cenozoic.

没有了树栖反鸟争，许多新鸟在古近纪初期很快适应了树上生活。

The K-Pg Extinction marks the boundary between the Cretaceous Period and the Paleogene Period, the first of the Cenozoic Era.

K-Pg 灭绝事件标志着白垩纪和古近纪（新生代第一个纪）分界。

But, now you’ve arrived at the Cenozoic Era.

但是，现在你已经到了 新生代。

Nowadays, and speaking very generally, geological time is divided first into four great chunks known as eras, Precambrian, Paleozoic, from the Greek meaning old life, Mesozoic, middle life, and Cenozoic, recent life.

现在, 一般来说, 地质时间首先分为四个大块, 称为时代, 前寒武纪, 古生代, 来自希腊语, 意思是旧生活, 中生代, 中生代和新生代, 最近生活。

For example, let's assume the nonavian dinosaurs had the same ratio of big species to small ones as the extinct land mammals of the Cenozoic era did.

例如，假设非鸟恐龙大体型物种与小体型物种比例与古近纪灭绝陆地哺乳动物比例同。

Sometimes, too, you will see the term Phanerozoic used to describe the span encompassing the Cenozoic, Mesozoic, and Paleozoic eras.

有时, 您还会看到Phanerozoic一词用于描述涵盖新生代, 中生代和古生代跨度。

But the fossil record of Madagascar stops abruptly at the beginning of the Cenozoic Era, about 66 million years ago.

但是马达加斯加化石记录在大约6600万年前新生代突然中断了。

Alright... so now we know about our mammal relatives from the Mesozoic, but what happened after during the Cenozoic?

好吧… … 现在们知道了一些中生代哺乳动物亲戚，那么在新生代发生了什么呢？

Well, there's a 20-million-year gap in the fossil record between the last Cretaceous ant and the earliest Cenozoic ant fossils.

好吧，在最后白垩纪蚂蚁化石和最早新生代蚂蚁化石之间有2000万年空白。

As for the hell ants, well they were gone about 10 million years before the Cenozoic even started.

至于地狱蚂蚁，在新生代开始前大约1000万年就已经消失了。