Robert Shaw

By Rshaw
  • Cambrian Period- 570 - 500 MYA
    570 BCE

    Cambrian Period- 570 - 500 MYA

    A time period where marine life was most prominent.
  • Ordovician period
    488 BCE

    Ordovician period

    the whole tropic hemisphere is entirely ocean and the southern hemisphere is the supercontinent Gondwana.
  • Silurian period
    448 BCE

    Silurian period

    Not much has changed, Marine life still thrive underwater.
  • Devonian period
    419 BCE

    Devonian period

    Marine life evolves into more complex life.
  • Carboniferous
    358 BCE

    Carboniferous

    Has highest oxygen levels in the world's entire history and large amounts of swamps formed.
  • Permian
    298 BCE

    Permian

    Pangea was made, the ancestors of mammals lived in this time period.
  • Triassic period
    252 BCE

    Triassic period

    Diverse life began outside of marine animals.
  • Jurassic Period
    199 BCE

    Jurassic Period

    Dinosaurs began to dominate the Earth and Pangea split apart to the continents that we have today.
  • Cretaceous period
    145 BCE

    Cretaceous period

    The mass extinction of almost all life occurred when a meteor hit the Earth triggering massive amounts of volcanic eruptions causing all life to die out due to the toxic fumes spread all over the ozone
  • Tertiary period
    66 BCE

    Tertiary period

    Continents had not yet settled in to where they are now today. Mammals we live with today began to dominate the Earth.
  • Quaternary period
    1 BCE

    Quaternary period

    Humans began to walk the Earth and evolve