Geplogic Time Line

By fitedav
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    Geological Time Line

  • Cambrain (570- 500 million years ago)

    Earliest record of marine life- Trilobites are dominate

  • Ordovician (500-435 million years ago)

    Echinoderms- Starfish, Sanddollar, Sea Urchins. Earliest fish that are always jawless, and later Jawed armored fish.

  • Silurian(435-395 million years go

    Earliest terrestrial plants, and animals. Tiktaalik Eurypterids develop.

  • Devonian(395-345 million years ago)

    Armored fish go extinct, but an abundance of serveral species of fish- Earliest amphibians.

  • Carboniferous(345-280 million years go)

    Abundant shoreless, and amphibians. Large swamp and coal farming in forests- Earliest Reptiles, and trees

  • Permian (280-225 million years ago)

    Extinction of many types of marine animals including trilobites.

  • Triassic (225-195 million years ago)

    Earliest dinosaurs, abundant cyads, and conifers.

  • Jurassic (195-136 million years ago)

    Earliest birds, and mammals. Abundant dinosaurs, and ammonites.

  • Cretaceous (136- 65 million years ago)

    Earliest flowering plants, climax of dinosaurs followed by extinction.

  • Tertiary (65-1.8 million years ago)

    Earliest placement mammals, modern mammals, and large running mammals.

  • Quaternary (1.8 million- Present)

    Large carnivores, Neanderthals, humans, and mastodoms.