Explanation

Devonian Period is spanning between about 419.2 million and 358.9 million years ago 

It was In geologic time, an interval of the Paleozoic Era

It is sometimes called the “Age of Fishes”

Plants, invertebrates, and other vertebrate lifeforms also experienced major changes in the Devonian

Additional informational:

The name of the Devonian Period is derived from the county of Devon, Eng.

During most of the Devonian Period, North America, Greenland, and Europe were united into a single Northern Hemisphere landmass