The initial radiation of vascular land plants, evidenced by increases in both diversity and morphological disparity during ...

When plants respirate, a process as essential as breathing is to humans, they consume carbon dioxide and emit oxygen. At a large scale and over a long period of time, this lowers the concentration of ...

When the Devonian period dawned about 416 million years ago the planet was changing its appearance. ... Plant Proliferation. Plants began spreading beyond the wetlands during the Devonian, ...

The Devonian Period, 419 to 358 million years ago, was one of the most turbulent times in Earth’s past and was marked by at least six significant marine extinctions, including one of the five ...

Plants also absorb carbon dioxide, or CO2, the atmosphere-warming greenhouse gas. As they spread, they could have chilled the planet, bringing on an ice age that would have made life even less ...

The ferns and their relatives first appear in the fossil record some 360 million years ago in the late Devonian period. ... period, from 145 to 66 million years ago. Like the clubmosses (see Plant ...

The Silurian Period occurred from 443.8 million to 419.2 million years ago. It was the third period in the Paleozoic Era. It followed the Ordovician Period and preceded the Devonian Period. During ...

The Devonian period marks a time when plant life began to shift from small, scattered vegetation to large-scale forests, Berry said. Plants remove carbon dioxide from the atmosphere, ...

The Devonian period is when plant species evolved into the first trees. It dates to over 400 million years ago, ...

Perhaps a frosty period near the end of the Devonian killed them off. It’s also possible that the plants, which pulled down so much carbon dioxide from the air, might have taken out too much and ...