Learn about the time period that took place 416 to 359 million years ago. 4 min read When the Devonian period dawned about 416 million years ago the planet was changing its appearance. The great ...

At that time, known as the Devonian period, the world was changing dramatically ... The move to land was a very gradual process, and the evolution of limbs wasn't a simple adaptation resulting ...

The oldest echinoids come from the Late Ordovician Period and are approximately 450 million years old ... Diversity increased progressively through the Palaeozoic, and in the Devonian forms started to ...

The time period from which the fossils came from also make them, in many ways, pivotal fish. They hail from the Devonian Period (359 million years to 419 million years ago), which represents a hinge ...