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.