The first ammonoids also arose during the Devonian. Related to octopuses and squid, these marine animals survived until the end of the Cretaceous period, 65 million years ago. Plants began ...

At that time, known as the Devonian period, the world was changing dramatically: complex plant ecosystems formed on land, the first woody plants appeared, and the water's edge was becoming a new ...

The first trees to colonize the supercontinents ... and their position for millions of years. "The Devonian period fundamentally changed life on Earth," says Davies. "It also changed how water ...

Over 390 million years ago, the ancestors of modern land animals said, “Feet before fins,” and took their first steps on ... ancient fish from the Late Devonian period—when their evolution ...