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

在时代末期，地球开始降温。

In Carboniferous forests dragonflies grew as big as ravens.

在的森林里，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 亿年前结束以来，这里就没有出现过任何冰川活动。

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

在岩中发现的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，森林和茂密的沼泽地正处于鼎盛时期。

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

例如，Iberospondylus 是的一个属，在现在西班牙的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.

新的研究让人们对瓦切螈有了更深入的了解，它生活在大约3。3亿年前被称为的时期。

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

生活在3亿年前末期的北美洲内海。

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).

在陆地生命大幅度增加的泥盆和，空气中的氧的浓度高达35%（现在是将近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.

的整个历史都写在这些阴暗的墙壁上，地质学家可以轻松地追踪其所有不同的阶段。

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 亿多年前从太阳吸收的能量。

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，你非得有某种并置对比的东西。在这个基础上，你可以知道德文的那些岩要比威尔士的这些寒武岩年轻。