Sean's Geology Timeline

By sjose4243

  • Cambrian Period 570 MYA- 500 MYA

    Cambrian Period 570 MYA- 500 MYA
    Trilobites are dominant

  • Ordovician 500 MYA- 435 MYA

    Ordovician 500 MYA- 435 MYA
    Echinoderms include starfish sand dollars sea urchins and sea cucumbers.. INvertabrates aare dominant

  • Silurian 435MYA- 395MYA

    Silurian 435MYA- 395MYA
    Earliest terrestrial plants and animals

  • Devonian 395-345 MYA

    Devonian 395-345 MYA
    Abundance of fish and earliest amphimbians and ammonites

  • Carboniferous 345-280 MYA

    Carboniferous 345-280 MYA
    Abudant Sharks. Large coal forming forests

  • Permian 280-225MYA

    Permian 280-225MYA
    Extinction of many types of marine animals

  • Triassic 225-195MYA

    Triassic 225-195MYA
    Earliest dinosaurs and abundant cycads and conifers

  • jurassic195-136MYA

    jurassic195-136MYA
    Earliest birds and mammals start to evolve. Abudant dinosaurs and ammonites

  • Cretaceous 136-65MYA

    Cretaceous 136-65MYA
    Extinction of dinsaurs. Abundance of bony fish.

  • Tertiary65-1.8MYA

    Tertiary65-1.8MYA
    Earliest mammals and large running mammals

  • Quaternary 1.8-present

    Quaternary 1.8-present
    Large Carnivores, NeADERTHALS, humans mastodons.