This time period took place 359 to 299 million years ago. 3 min read The Carboniferous period, part of the late Paleozoic era, takes its name from large underground coal deposits that date to it.

In the oxygen-rich air of the Carboniferous period, between roughly 300 million and 360 million years ago, some animals ...

Dominated by carbon-rich swamps and forests proliferating across Earth's rocky surface, the Carboniferous period saw a boost in atmospheric oxygen and vast quantities of carbon dioxide trapped in what ...