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Devonian Period

By echu1023
  • 354

    mya Beginning of the Devonian Period

    mya Beginning of the Devonian Period
    The Devonian Period Started.
  • Period: 354 to

    Devonian Period

  • 365

    mya First Jawed Fish

    mya First Jawed Fish
    The acanthodians was a jawless fish. They are also called spiny sharks and live in fresh water.
  • 410

    mya First plant with seed

    mya First plant with seed
    First plants with seeds began to grow creating forests. At first they were only moss and those plants but now there were trees.
  • 415

    mya Forests

    mya Forests
    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

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

  • mya Placoderms

    mya Placoderms
    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.