Astrid's Geologic Timeline

By asiboe

  • Cambrian Period (570M-500M)

    Cambrian Period (570M-500M)
    Life explodes and marine life is dominant specifically the trilobites. Land is dry and rocky due to break up of a super continent and lack of vegetation.
  • Period: to

    Paleozoic

  • Ordovician Period (500M-435M)

    Ordovician Period (500M-435M)
    Marine life flourishing and primitive plants start to form. Climate is warm and wet with rising sea levels followed by an ice age.

  • Silurian Period (435M-395M)

    Silurian Period (435M-395M)
    Animals and plants return after mass extinction that ended Ordovician period.Temperatures climb and sea levels rise to create shallow marine environments and marine life flourishes again.First true plants form.

  • Devonian Period (395M-345M)

    Devonian Period (395M-345M)
    Huge variety of fish form, plants started to evolve to be able to survive on dry land.Super continent was starting to form.

  • Carboniferous Period (345M-280M)

    Carboniferous Period (345M-280M)
    Warm oceans and lots of coal is made suring this time due to huge forests.Amphibians evolved into more complex organisms and the first reptiles started to form.

  • Permian Period (280M-225M)

    Permian Period (280M-225M)
    Pangea is formed after mass extinction during this period. Climate extremes are occuring.Reptiles became the dominant lifeform.

  • Triassic Period (225M-195M)

    Triassic Period (225M-195M)
    Super continent is starting to break up. Dinosaurs are the dominant lifeform and early mammals are starting to form.
  • Period: to

    Mesozoic

  • Jurassic Period (195M-136M)

    Jurassic Period (195M-136M)
    Landmasses are crumbling and inland seas are starting to form. Humid subtropical climate.Dinosaurs are dominant and are getting bigger and the first bird like animal is formed.

  • Cretaceous Period (136M-65M)

    Cretaceous Period (136M-65M)
    Continents are moving and changing the face of the earth. Dinosaurs still ruled the landscape and kept evolving.Flowering plants started to pop up everywhere.

  • Tertiary Period (65M-1.8M)

    Tertiary Period (65M-1.8M)
    Mammals were starting to become donimant and started to evolve. Continents kept drifting to their positions today.Climate spiked and then cooled.Fish and whales were present .
  • Period: to

    Cenozoic

  • Quaternary Period (1.8M-Present)

    Quaternary Period (1.8M-Present)
    Glaciers are on the move creating the landscape.Continents are pretty much where they are today.Humans evolve into us.Whales and sharks rule the waters.