Geologic Time Scale in One Calander Year

By BeeryR14
  • Precambrian Time 4600 MYA

    Precambrian Time 4600 MYA

    The Earth formed from planetary nebula.
    Oldest age-dated rocks on Earth.
    Fossil algae and stromatolited (prokaryotes).
    Fossil evidence of bacteria.
    Fossil evidence of cells with a nucleus (eukaryotes).
    First multi-celled organisms (seaweed and algea).
    Oldest marine worms and jellyfish.
  • Period: to

    Geologic Time Scale In One Calander Year

  • Origin of life (first cells) 3900 MYA

    Origin of life (first cells) 3900 MYA

    3900 million years ago.
  • Prokaryotes 3600 MYA

    Prokaryotes 3600 MYA

  • Eukaryotes 2100 MYA

    Eukaryotes 2100 MYA

  • Paloezoic Era 544 MYA

    Paloezoic Era 544 MYA

  • Cambrian Period 544 MYA

    Cambrian Period 544 MYA

    Burgess Shale animals.
    Animals with a notochord.
  • Ordovician Period 544 MYA

    Ordovician Period 544 MYA

    First fish.
    First fossil evidence of land plants.
  • Silurian Period 438 MYA

    Silurian Period 438 MYA

    First vascular land plants.
    Oldest lung fish fossils.
  • Devonian Period 408 MYA

    Devonian Period 408 MYA

    Oldest fossi evidence of mosses.
    First insects.
    First lobe-finned fish.
    First land animals.
    First sharks.
    First seed plants.
  • Mississippian Period 360 MYA

    Mississippian Period 360 MYA

    First possible reptiles.
  • Pennsylvanian Period

    Pennsylvanian Period

    Permian system begins.
    Snail-backed reptiles (Dimetrodon).
    End of Paleozoic.
    96% of all life on Earth perishes.
  • Mesozoic Era "The Age of Reptiles" 245 MYA

    Mesozoic Era "The Age of Reptiles" 245 MYA

  • Triassic Period 245 MYA

    Triassic Period 245 MYA

    First crocidiles.
    First dinosaurs.
    First mammals (shrew like).
    First turtle. :3
  • Jurassic Period 208 MYA

    Jurassic Period 208 MYA

    Dilophosaurus, early dinosaur.
    First bird-Archeopteryx.
    Apatosaurus and Brachiosaurus.
    Stagosaurus.
  • Cretaceous Period 144 MYA

    Cretaceous Period 144 MYA

    First flowering plants. Duck-billed dinosaurs. Protocerstops. Tricerotops. Tyrannosaurus rex. Velociraptoe. End of <esozoic, probably meteor or comet impact.
  • Cenozioc Era- The age of Mammels- 65 MYA

    Cenozioc Era- The age of Mammels- 65 MYA

  • Teritary Peroid 65 MYA

    Teritary Peroid 65 MYA

    First ancestors of dogs and cats- 64 MYA. Grasses become widespread- 60 MYA. First ancestors of pigs and deer- 57 MYA. First horses- 55 MYA. First ancestors of rabbits 45 MYA. First monkeys- 39 MYA. OLdest human like ancestors (hominids)- 4 MYA.
  • Quatenary Period 2 MYA

    Quatenary Period 2 MYA

    First of 4 ice ages- 1 MYA. Oldest direct human-ancestor fossil, Homo habilis- 1MYA. First modern man, Homo sapiens-0.1 MYA. Mammoth and mastodon bones- 0.005 MYA. Revolutionary War- 235 years ago World War 2- 70 years ago