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

代。你可能不会遇到，但我会利用它让故事更有趣。

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

我要删除“白垩”、“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，开启了代，也就是众所周知的哺乳物时代。

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

但是，现在你已经到了 代。

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

至于地狱蚂蚁，它们在代开始前大约 1000 年就消失了。

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一词用于描述涵盖代, 中代和古代的跨度。

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

但是马达加加的化石记录在大约 6600 年前的代初期突然停止了。

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和古近（代的第一个）的分界。

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

好吧… … 所以现在我们了解了中代的哺乳物亲属，但是代之后发了什么？

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

下一次发在大约1亿年后的代，当时恐龙灭绝和哺乳物崛起。

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.

他们在一次关于代地区的会议上相遇，在那里他们展示了陨石对冷血物灭绝影响的研究。

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，在最后的白垩蚂蚁和最早的代蚂蚁化石之间的化石记录中有 2000 年的差距。

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.

由于没有与栖息在树上的鸟类竞争， 代初期，许多鸟类迅速在树上活。

But, as the Cenozoic Era started, a completely different group of sea turtles was ready to take over the world's oceans -- the true leatherbacks.

但是，随着代的开始，一群完全不同的海龟准备接管世界海洋——真正的棱皮龟。

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，我们假设非鸟类恐龙的大型物种与小型物种的比例与代灭绝的陆哺乳物相同。

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, 古代, 来自希腊语, 意思是旧活, 中代, 中代和代, 最近的活。