geologic time scale-richardson

By makialynn
  • Precambrian Time 4600 MYA

    Precambrian Time 4600 MYA

    The earth formed from plantery nubula. Oldest age-dated rock 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 algae). Oldest marine worms and jellyfish.
  • Period: to

    geologic time scale in one calender 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 with a notochord
  • ordvovivcian period 544 MYA

    ordvovivcian period 544 MYA

    first fish first fossil evidence of land plants

  • Silurian period 438 MYA

    First vascular land plants,oldest lung fish fossils

  • Deconian period 408 MYA

    oldest fossil evidence of mosses ,first insects ,first lobe finned fish land animals,sharks ,and seed plants.

  • Mississippian period 360 MYA

    first possible reptiles

  • Pennsylavanian period

    permian system begins , snailback reptiles . end of paleozioc. 96% of all life on earth perishes

  • Mesozoic era "the age of repiles" 245 MYA

  • triassic period 245 MYA first crocodiles and dinosaurs and mammals ,also turtles

    triassic period 245 MYA first crocodiles and dinosaurs and mammals ,also turtles

  • jurassic period 208 MYA

    jurassic period 208 MYA

    dilophosauras early dinos first birds apatosauaus and brachiosauras stegosaurus

  • Cretaceous period 144 MYA

    first flowering plants duck billed dinos prooceratops t-rex velocerrapter end of mesozioc era metor or comet impact

  • cenozoic era - The age of animals - 65 MYA

  • teritary period 65 MYA

    first ancestors of dogs and cats ,grass is wide spread pigs deer ancestors horses and rabbits first monkeys human like ancestors.

  • Quaternary period 2 MYA

    ice age human ancestor fossils homo habilis modern man homo sapians mammoth bones rev. war and ww 2