less than 1 minute read

Devonian Period

Devonian Period, fourth period of the Paleozoic Era, beginning about 400 million years ago and lasting 55 million years. During this period the oceans covered much of what is now dry land, and fish were the dominant life form.

See also: Paleozoic.

Additional topics

21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Davis, Henry Gassaway to Diamond