Near the end of an era called the carboniferous, earth started to cool.

在石纪时代末期，开始降温。

In Carboniferous forests dragonflies grew as big as ravens.

在石纪森林里，蜻蜓长到大得像乌鸦。

And even further, there hasn't been any glacial activity here since the carboniferous ended nearly 300 million years ago.

此外，自近 3 亿年前石纪结束以来，这里就没有出过任何冰川活。

A big trackway discovered in Carboniferous rock in Scotland has been attributed to Hibbertopterus.

在苏格兰石纪岩石中一条大轨道被归因于 Hibbertopterus。

359 Million Years Ago in the Carboniferous forests and lush marshlands are at their peak.

3.59 亿年前，石纪森林和茂密沼泽正处于鼎盛时期。

Iberospondylus, for example, was a Carboniferous genus that thrived in coastal environments in what's now Spain.

例如，Iberospondylus 是石纪一个属，在在西班牙沿海环境中繁衍生息。

New research is providing a deeper understanding of Whatcheeria, which lived around 330 million years ago during a time known as the Carboniferous period.

新研究让人们对瓦切螈有了更深入了解，它生活在大约3。3亿年前被称为石纪时期。

It lived in the Inland Seas of North America 300 million years ago at the very end of the carboniferous period.

生活在3亿年前石纪末期北美洲内海。

Oxygen levels in the Devonian and Carboniferous periods, when terrestrial life first bloomed, were as high as 35 percent (as opposed to nearer 20 percent now).

在陆生命大幅度增加泥盆纪和石纪，空气中氧浓度高达35%（在是将近20%）。

The whole history of the carboniferous period was written upon these gloomy walls, and a geologist might with ease trace all its diverse phases.

石纪整个历史都写在这些阴暗墙壁上，质学家可以轻松追踪其所有不同阶段。

And eventually, some hairless ape dug it up and burned it, releasing the energy that the scale trees absorbed from the Carboniferous sun over 300 million years ago.

最终， 一些无毛猿将其挖出并焚烧，释放出鳞片树在 3 亿多年前从石纪太阳吸收能量。

To interpret rocks, there needs to be some means of correlation, a basis on which you can tell that those carboniferous rocks from Devon are younger than these Cambrian rocks from Wales.

若要解释岩石，你非得有某种并置对比东西。在这个基础上，你可以知道德文那些石纪岩石要比威尔士这些寒武纪岩石年轻。