Geological Time scale- Bailey

By BaileyG14

  • Precambian Time 4600 MYA

    Precambian Time 4600 MYA
    The Earth was formed from planetary nebula. Oldest age-dated rocks on Earth. Fossil algea and stromatolites (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

    Geological Time Scale in One Year Calander

  • Origin of Life (First Cells) 3900 MYA

    Origin of Life (First Cells) 3900 MYA
    3900 Years ago.

  • Prokaryotes 3600 MYA

    Prokaryotes 3600 MYA

  • Eukaryotes 2100 MYA

    Eukaryotes 2100 MYA

  • Paleozoic Era 544 MYA

    Paleozoic 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 fossil 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.

  • Mesozioc Era "The age of Reptiles" 245 MYA

    Mesozioc Era "The age of Reptiles" 245 MYA

  • Triassic Period 245 MYA

    Triassic Period 245 MYA
    First Crocodiles, dinosaurs, mammals (Shrew like) and turtles.

  • Jurassic Period 208 MYA

    Jurassic Period 208 MYA
    Dilophosaurus, early dinosaur. First bird- Archeopteryx. Apatosuarus and Brachiosaurus. Stegosaurus.

  • Cretaceous Period

    Cretaceous Period
    First flowering plants. Duck-billed dinosaurs. protoceratops. triceratops. Tyrannosaurus Rex. Velociraptor. End of Mesozoic Era, probably meteor or comet impact.

  • Cenozoic Era - The age of mammals - 65 MYA

    Cenozoic Era - The age of mammals - 65 MYA

  • Tertiary Period 65 MYA

    Tertiary Period 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.

  • Quaternany Period 2 MYA

    Quaternany Period 2 MYA
    First of 4 ice ages - 1 MYA. Oldest direct human ancestor fossils, homo habilis - 1 MYA. First modern man, Homo sapiens - 0.1 MYA. Mammoth and mastodon bones - 0.05 MYA. Revolutionary War - 235 years ago. World War II - 70 years ago.