Krystelle Geologic Timeline

By condekry
  • 570 BCE

    Cambrian 570M-500M

    Cambrian 570M-500M
    Oceans covered the Earth's surface. All life was marine and mostly consisted of trilobites.
  • 500 BCE

    Ordovician 500M-435M

    Ordovician 500M-435M
    Echinoderms, invertebrates, mollusks, fish, jawed and armored fish.
  • 435 BCE

    Silurian 435M-395M

    Silurian 435M-395M
    Animals were starting to go on land. Plants and animals, Tiktaalik, eurypterids existed.
  • 395 BCE

    Devonian 395M-345M

    Devonian 395M-345M
    Fish (armored extinct), amphibians and ammonites.
  • 345 BCE

    Carboniferous 345M-280M

    Carboniferous 345M-280M
    The Earth's surface was tropical swamplands. Reptiles, scale trees, seed farms, sharks and amphibians.
  • 280 BCE

    Permian 280M-225M

    Permian 280M-225M
    Extinction of many marine animals including trilobites due to a mantle plume.
  • 225 BCE

    Triassic 225M-195M

    Triassic 225M-195M
    Earliest dinosaurs, cycads, conifers.
  • 195 BCE

    Jurassic 195M-136M

    Jurassic 195M-136M
    Earliest birds, mammals, dinosaurs, ammonites.
  • 136 BCE

    Cretaceous 136M-65M

    Cretaceous 136M-65M
    Earliest flowering plants, climax of dinosaurs followed by extinction, decline in brachiopods, bony fish.
  • 65 BCE

    Tertiary 65M-1.8M

    Tertiary 65M-1.8M
    Earliest placental mammals, modern mammals, large running mammals.