The Devonian was the period spanning from 419 to 358 million years ago. In the oceans, animals included trilobites, ray finned and lobe finned fish, and the newly evolved ammonites. Placoderms, a now extinct group of armor plated fish, dominated the oceans. On land, plants were evolving rapidly, leading to forests of vascular plants that released spores, rather than seeds, and by the end of the period there were also seed bearing plants with true leaves and roots. Arthropoda (invertebrates with segmented exoskeletons, such as Spiders and insects) colonized the land, and the first amphibians evolved.
The Devonian Period
The period after the Devonian Period (416 to 359.2Ma) is the Carboniferous Period (359.2 to 299Ma).
Fish first appeared in the Cambrian period, long before the Devonian.
The Devonian period lasted from 416 million years ago to 359.2 million years ago.
During the devonian time period most of land was under water.
The Devonian Period
Devonian Period
The Devonian Period
The Devonian period lasted from 416 million years ago to 359.2 million years ago.
Devonian Period
another period started
Devonian Period