Devonian Period

mya Beginning of the Devonian Period

354

The Devonian Period Started.

Devonian Period

Period: 354 to Mar 2, 2022

mya First Jawed Fish

365

The acanthodians was a jawless fish. They are also called spiny sharks and live in fresh water.

mya First plant with seed

410

First plants with seeds began to grow creating forests. At first they were only moss and those plants but now there were trees.

mya Forests

415

Toward the end of the Devonian the first forests arose as stemmed plants evolved strong, woody structures capable of supporting raised branches and leaves. Some Devonian trees are known to have grown 100 feet (30 meters) tall.

mya Extinction

Mar 2, 2022

A huge extinction occured ending the Devonian Period. The most important group affected by the extinction was the great-reef systems.

mya Placoderms

Mar 2, 2022

Placoderms are huge fish with an armored body and head. placoderms were the dominant vertebrate group during the Devonian period, growing larger than other groups of fish. They are one of the first jawed fish.