ES period 7

By emelisegura
  • Period: to

    ES period 7

    geological time scale

  • Cretaceous

    Cretaceous
    -first flowering plants appear -angiosperm
    -impact hypothesis- dinosaurs mass extinction
    number 5 and 35

  • Jurassic

    Jurassic
    -flying reptiles called pterosaurs are in the air now
    -the dines begin to get big and dominate the land-lizard hipped and bird-hipped appear- carnivores and herbivores have arrived
    number 3 and 13

  • Triassic

    Triassic
    -Squirrel sized dinosaurs and the first forest dwelling mammals appear
    -Ichthyosaurs are living in the ocean, new invertebrates numbers 16 and 34

  • Permian

    Permian
    -Appalachian Mountains are created because of the collision of tectonic plates and savannahs form
    -Environmental change causes mass extinction of sea intertibrates (trilobites and eurypterids) as the seas retreat numbers 8 and 38

  • Carbonise

  • Penn

    Penn
    • Giant cockroaches appear -Coal depois form number 4 and 15

  • Missi

    Missi
    -early reptiles resembling large lizards appear number 21

  • Devonian

    Devonian
    -huge plants begin to develop, early amphibians
    -Age of fishes, fish can breath out of the water and spend time on land form number 31 and 37

  • Silurian

    Silurian
    -Eurypterids (sea scorpions, sea starts and coral become more common
    -Vascular land plants and animals, such as scorpions begin to evolve on land
    number 24 and 33

  • Ordovician

    Ordovician
    -There is very little life during thus period
    -Colonies of tiny invertebrates call graptolites flourished and vertebrates appear, fish didn't have jaws or teeth and their bodies were covered with tiny bony plates numbers 1 and 30

  • Cambrian

    Cambrian
    -trilobites appear
    -shelled brachiopods appear number 22 and 23

  • Precambrian

    Precambrian
    -the presence of stromatolites indicates that shallow seas covered much of earth during intervals time
    -nearly half of the valuable mineral deposits in the world occur in the rocks of this period number 10 and 11

  • Holocene

    Holocene
    -The last glacial period need and sea levels rose, Great lakes formed
    -Modern human developed agriculture and used tools made of bronze and iron numbers 19 and 28

  • Pleistocene

    Pleistocene
    -Homosapien (modern humans) appeared and are hunters
    -Species that did not evolve to survive extreme cold moved to warmer climate areas or become extinct (dire wolves and giant ground sloth) number 9 and 20

  • Pliocene

    Pliocene
    -Various species migrated between continents across land bridges
    -First modern horses appear number 18 and 26

  • Miocene

    Miocene
    -Antarctic icecaps begin to form
    -Mediterranean sea dries up and refills several times due to tectonic forces in dropping sea levels number 32 and 36

  • Oligocene

    Oligocene
    -Himalayas develop due to uplifting caused by the Idian subcontinent and Eurasian continents colliding
    -Many early mammals become extinct, clams and snails flourish number 6 and 27

  • Eocene

    Eocene
    -Flying squirrels, whales and bats appear
    -World wide temperatures drop about 4 degrees celsius (39.2 degrees Fahrenheit) number 17 and 25

  • Paleocene

    Paleocene
    -First primates evolve
    -Small rodents appear number 12 and 29

  • Anthripocene

    -some scientist believe that human kind mass extinctions of plant and animal species, polluted the oceans and altered the atmosphere
    -Scientist think it began with the industrial age in the early 1800's other think it began with the atomic age in 1950's number 7 and 14