geological timescale timeline project

By janelis

  • Precambrian

    Precambrian
    EVENT 6 Himalayas develop due to uplifting caused by the Indian subcontinent and Eurasian continents colliding.

  • Cambrian

    Cambrian
    EVENT 23 shelled brachiopods appear EVENT 30 colonies of tiny invertebrates call graptolites florished and vertibrates appear, Fish did not have jaws or teeth and their bodies were covered with bony plates.
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  • Ordovician

    Ordovician
    EVENT 7 Some scientists believe that human kind has created mass extinctions of plant and animal species, polluted the oceans and altered the atmosphere EVENT 25 world wide temperatures drop about 4 degrees celsius

  • Silurian

    Silurian
    EVENT 24 Euryterids, sea stars and coral become more common EVENT 33 vascular land plants and animals, such as scorpions begin to evolve on land

  • Devonian

    Devonian
    EVENT 11 Nearly half of the valuable material deposits in the world occur in the rocks of this period EVENT 27 many early mammal become extinct, clams and snails flourish

  • Carboniferous

    Carboniferous
    EVENT 2 swamps and forests cover the land EVENT 15 coal deposits form

  • Permian

    Permian
    EVENT 8 Appalachian Mountains are created because of the collision of tectonics plates and savannahs form EVENT 38 environmental change causes mass extinction of sea invertibrates as the seas retreat

  • Triassic

    Triassic
    EVENT 16 welcome to the world of the dinosaur! enter the squirrel sized dinosaur and the first forest dwelling mammals appear EVENT 29 small rodents evolve

  • Jurassic

    Jurassic
    EVENT 3 flying reptiles called pterosaurs are in the air now EVENT 13 whoa those dinos are getting big and dominate the land lizard hipped and bird hipped appear, carnivores and herbivores have arrived

  • Cretaceous

    Cretaceous
    EVENT 5 first flowering plants appear, angoisperm

  • Tertiary/ Quaternary

    Tertiary/ Quaternary
    EVENT 10 the presence of stromatolites indicates that shallow seas covered much of Earth during intervals in this period EVENT 32 antarctic icecaps begin form

  • Mississippi period

    Mississippi period
    EVENT 22 trilobites appear EVENT 31 huge plants begin to develop, early amphibians form

  • Pennsylvanian

    Pennsylvanian
    EVENT 4 giant cockroaches appear EVENT 21 early reptiles resembling large lizards appear

  • Palaocene

    Palaocene
    EVENT 12 first primates evolve EVENT 34 Ichthyosaurs are living in the ocean, new invertebrates call ammonite develop

  • Eocene

    Eocene
    EVENT 17 flying squirrels, whales and bats appear EVENT 26 first modern horses appear

  • Oligocene

    Oligocene
    EVENT 28 modern human developed agriculture and used tools made of bronze and iron EVENT 36 mediterranean sea dries up and refills several times due to tectonic forces on dropping sea level

  • Miocene

    Miocene
    EVENT 20 species that did not evolve to survive extreme cold moved to warmer climate areas or became extinct EVENT 37 age of fishes, fish that can breath out of the water and spend time on land form

  • Pliocene/ Pleistocene

    Pliocene/ Pleistocene
    EVENT 1 there is very little plant life during this period EVENT 18 various species migrated between continents across land bridges

  • Holocene

    Holocene
    EVENT 9 homosapien appeared and are hunters EVENT 19 the last glaical period ended and sea levels rose, Great Lakes formed

  • Anthropocene

    Anthropocene
    EVENT 14 there is an argument as to when this period began, some scientists think it began with the industrial age in the early 1800's other think it began with the atomic age in the 1950's