Geological timeline

  • 541 BCE

    Cambrian period

    Cambrian period
    Many marine invertebrates with external skeletons
  • Period: 541 BCE to 252 BCE

    Paleozoic Era

    The Paleozoic or Paleozoic era is a division of the geological time scale that belongs to the Phanerozoic eon, with the category of era (as time) and erathem (as a set of rocks).
  • Period: 541 BCE to 485 BCE

    Cambrian period

  • 485 BCE

    Ordovician period

    Ordovician period
    Widespreadmarine algae fish without jaws
  • Period: 485 BCE to 444 BCE

    Ordovician period

  • 444 BCE

    Silurian period

    Silurian period
    First land plantas
  • Period: 444 BCE to 419 BCE

    Silurian period

  • 419 BCE

    Devonian period

    Devonian period
    Fish diversity
    first amphibians
  • Period: 419 BCE to 359 BCE

    Devonian period

  • 359 BCE

    Carboniferous period

    Carboniferous period
    Forest of giant fems
    First reptiles
  • Period: 359 BCE to 299 BCE

    Carboniferous period

  • 299 BCE

    Permian period

    Permian period
    Reptiles diversity
  • Period: 299 BCE to 252 BCE

    Permian period

  • 252 BCE

    Triassic period

    Triassic period
    First dinosaurs
    First mammals
  • Period: 252 BCE to 66 BCE

    Mesozoic Era

    The Mesozoic, was Mesozoic or secondary era, known zoologically as the age of the dinosaurs or botanically as the age of the cycads
  • Period: 252 BCE to 201 BCE

    Triassic period

  • 201 BCE

    Jurassic period

    Jurassic period
    Gymnosperm plants dominate the Earth,s surface
    Dinosaurs diversity
    First flying and aquatic reptiles
    First birds
  • Period: 201 BCE to 145 BCE

    Jurassic period

    Gymnosperm plants dominate the Earth,s surface
    Dinosaurs diversity
    First flying and aquatic reptiles
    First birds
  • 145 BCE

    Cretaceous period

    Cretaceous period
    First plants with flowers
    Extinction of dinosaurs and ammonites
  • Period: 145 BCE to 66 BCE

    Cretaceous period

  • 66 BCE

    Tertiary period

    Tertiary period
    development and diversification of mammals
    alpine orogeny begins
  • Period: 66 BCE to 10

    Cenozoic Era

    The Cenozoic Era began with the extinction of the dinosaurs approximately 66 million years ago. ... It is also known as the "Age of mammals", since this was the privileged way of life throughout its 66 million years of duration. Furthermore, it is the Age in which the human being made his appearance.
  • Period: 66 BCE to 2 BCE

    Tertiary period

  • 2 BCE

    Quarternary period

    Quarternary period
    development and diversification of mammals
    Glaciaton in the Northern Hemisphere
  • Period: 2 BCE to 10

    Quaternary period