One genetic study has traced its origins to the Late Cretaceous or Early Paleogene period.

一项遗传学研究将其起源追溯到白垩纪晚期或古近纪早期。

According to  our fossil record, the earliest known primates emerged in primitive rainforests during the  Paleogene Period.

根据化石记录，已知最早灵长类动物出现在古近纪原始雨林中。

This was the very beginning of the Paleogene Period, and the world was … kind of empty.

这是古近纪 开端，世界… … 有点空虚。

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）界。

The relatives of modern-day dogs, cats, and bears,   known as Carnivorans, emerged during the Paleogene Period, about 60 million years ago.

现代狗、猫和熊近亲被称为食肉动物，出现于古近纪，大约 6000 万年前。

Thanks to their mobility and adaptability, avian dinosaurs  survived into the Paleogene Period and filled vacant niches in tropical ecosystems around the  Equator.

由于其机动性和适应性，鸟类恐龙存活到了古近纪， 并填补了赤道带生态系统空缺。

When this giant object slammed into Earth, it triggered one of the  most devastating events in our planet's history, known as the Cretaceous-Paleogene or K-Pg  Extinction.

当这个巨大物体撞击地球时，它引发了星球历史上最具破坏性事件之一，被称为白垩纪-古近纪或 K-Pg 灭绝。

To be precise, we will be going back 66 million years ago to an event known as The Cretaceous–Paleogene extinction event, which is also known as the Cretaceous–Tertiary or K–T extinction.

准确地说， 将回到 6600 万年前白垩纪-古近纪灭绝事件，也称为白垩纪-第三纪或 K-T 灭绝事件。

At the end of the Cretaceous Period, a fatal blow struck the ammonites and most of the nautiloids: the Cretaceous-Paleogene extinction event -- the same event that killed the non-avian dinosaurs.

在白垩纪末期，一个致命打击击中了菊石和大多数鹦鹉螺：白垩纪-古近纪灭绝事件——与杀死非鸟类恐龙事件相同。

Well, the first thing to note is that the Cerrejon formation dates back to just a few million years after the Cretaceous-Paleogene extinction event that wiped out all of the non-avian dinosaurs and many other megafauna.

好吧，首先要注意是，Cerrejon 地层历史可以追溯到白垩纪-古近纪灭绝事件之后几百万年，这场灭绝事件消灭了所有非鸟类恐龙和许多其他巨型动物。

Some parts  of the world were already scorching during the Late Cretaceous Period, the last great age of the  dinosaurs, but temperatures climbed even higher following a global catastrophe known as the  Cretaceous-Paleogene or K-Pg Extinction Event.

在白垩纪晚期，即恐龙最后一个伟大时代， 世界上一些地区已经变得炎，但在一场被称为白垩纪-古近纪或 K-Pg 灭绝事件全球灾难之后， 气温甚至攀升得更高。

Paleogene, the two periods whose boundary is marked by this event.

古近纪德语缩写之后，这两个时期边界 以该事件为标志。

It's safe to say the Paleogene began with a rocky start.

可以肯定地说，古近纪开端并不顺利。

66 Million Years Ago in the Paleogene the continents look roughly the same as today and mammals take over.

6600 万年前古近纪大陆看起来与今天大致相同，并由哺乳动物取代。

The first mammals actually  emerged millions of years earlier, but during the Paleogene, they grew and diversified  like never before.

第一批哺乳动物实际上早在数百万年前就出现了，但在古近纪， 它生长和多样化程度前所未有。