Geological Time

By Aday Reiser
  • Marine life diversifies anormously
    541 BCE

    Marine life diversifies anormously

    -Many marine invertebrates with external skeletons(Arthropods)(Cambrian).
    -Widespread marine algae(Ordovician)
    -Fish without jaws(Ordovician).
  • Period: 541 BCE to 252 BCE

    Paleozoic Era

  • Period: 541 BCE to 485 BCE

    Cambrian

  • Period: 485 BCE to 444 BCE

    Ordovician

  • First great extincion
    444 BCE

    First great extincion

    -Fish diversify(Demovian).
    -Forest of giants terms(Carboniferous).
    -Reptiles diversify(Permian).
  • First land plants
    444 BCE

    First land plants

  • Period: 444 BCE to 419 BCE

    Silurian

  • First amphibians
    419 BCE

    First amphibians

  • Period: 419 BCE to 359 BCE

    Devonian

  • First reptiles
    359 BCE

    First reptiles

  • Period: 359 BCE to 299 BCE

    Carboniferous

  • Period: 299 BCE to 252 BCE

    Permian

  • The Earth's greatest extinction occurs Pangaea
    252 BCE

    The Earth's greatest extinction occurs Pangaea

    -Gymmnosperm plants dominate the Earth's surface(Jurassic).
    -Dinosaurs diversify(Jurassic).
    -Fist flying and aquatic reptiles(Jurassic).
  • Dinnosaurs and mammals appear
    252 BCE

    Dinnosaurs and mammals appear

  • Period: 252 BCE to 66 BCE

    Mesozoic Era

  • Period: 252 BCE to 201 BCE

    Triassic

  • First birds
    201 BCE

    First birds

  • Period: 201 BCE to 145 BCE

    Jurassic

  • First plants with flowers
    145 BCE

    First plants with flowers

  • Period: 145 BCE to 66 BCE

    Cretaceous

  • Massive extinction from a meteorite impact
    66 BCE

    Massive extinction from a meteorite impact

    -Development and diversification of mammals.
  • Extinction of dinosaurs and amonites
    66 BCE

    Extinction of dinosaurs and amonites

  • Period: 66 BCE to 20

    Cenozoic Era

  • Period: 66 BCE to 2 BCE

    Tertiary

  • Period: 2 BCE to 20

    Quarternary