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Historical geologic timeline - Quincy Gaither

By Felkro
  • Cambrian Period (570-500 MYA)
    500 BCE

    Cambrian Period (570-500 MYA)

    Abundant animals
    mass extinctions
    abundance of plants
    continental shifts
    worldwide climate
  • Ordovician Period (500-435 MYA)
    435 BCE

    Ordovician Period (500-435 MYA)

    Echinoderms dominate a majority of the planet.
    Mollusks become abundant.
    Earliest fish appear.
  • Silurian Period (435-395 MYA)
    395 BCE

    Silurian Period (435-395 MYA)

    Earliest terrestrial plants and animals appear.
    Tiktaaliks appear.
    Eurypterids develop.
  • Devonian Period (395-345 MYA)
    345 BCE

    Devonian Period (395-345 MYA)

    Armored fish go extinct.
    Regular fish appear.
    Earliest amphibians arrive.
    Ammonites.
  • Carboniferous Period (345-280 MYA)
    280 BCE

    Carboniferous Period (345-280 MYA)

    Abundance of sharks/amphibians.
    Large swampy forests dominate the planet, forming lots of coal over millions of years.
    earliest reptiles.
    Scale trees/seed ferns
  • Permian Period (280-225 MYA)
    225 BCE

    Permian Period (280-225 MYA)

    Amphibians dominate.
    mass extinction, 95% of marine species, and 50% land animals completely wiped out
  • Triassic Period (225-195 MYA)
    195 BCE

    Triassic Period (225-195 MYA)

    Earliest dinosaurs arrive. as well as cycads and conifers.
  • Jurassic Period (195-136 MYA)
    136 BCE

    Jurassic Period (195-136 MYA)

    Earliest birds appear, as well as mammals, oh yeah, also big dinosaurs, BIIIG dinosaurs.
  • Cretaceous Period (136-65 MYA)
    65 BCE

    Cretaceous Period (136-65 MYA)

    Earliest flowering plants appear. also my favorite dinosaur, the Deinonychus (or "terrible claw")
    also sadly, a mass extinction 65% of species, including the dinosaurs, were wiped out.
  • Tertiary Period (65-1.8 MYA)
    1 BCE

    Tertiary Period (65-1.8 MYA)

    earliest placental mammals appear. as well as some modern mammals
  • Quaternary period (1.8 MYA - Today)
    1 CE

    Quaternary period (1.8 MYA - Today)

    Large carnivores appear, as well as neanderthals, there were also some mastodons early on.