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.