Evolve

Geological Timeline

By sagedikian
  • Precambrian Time (4600)

    Precambrian Time (4600)

    EVENT22.Trilobites appeared.EVENT23.Shelled brachiopods appear.
  • Period: to

    SGEDIKIANP1

    Geological Timescale
  • Cambrian Period (542)

    Cambrian Period (542)

    EVENT30.Colonies of tiny invertebrates called graptolites flourished and vertebrates appear,Fish did not have jaws or teeth and their bodies were covered with bony plates.
  • Silurian Period (444)

    Silurian Period (444)

    EVENT24. Eurypterids, sea stars and coral become more common.EVENT33. Vascular land plants and animals, such as scorpions begin to evolve on land.
  • Devonian Period (416)

    Devonian Period (416)

    EVENT31.Huge plants begin to develop, early amphibians form.EVENT37. Age of fishes, fish that can breath out of the water and spend time on land form.
  • Mississippian Period (359)

    Mississippian Period (359)

    EVENT2.Swamps and forests cover the land. EVENT8.Appalachian Mountains are created because of the collision of tectonic plates &savannah form.
  • Pennsylvanian Period (318)

    Pennsylvanian Period (318)

    EVENT4.Giant cockroaches appear. EVENT15.Coal deposits form.
  • Permian Period (299)

    Permian Period (299)

    EVENT38. Environmental changes causes mass extinction of sea invertebrates (trilobites & eurypterids) as the seas retreat.
  • Triassic Period (251)

    Triassic Period (251)

    EVENT16. Welcome to the world of the Dinosaur!Enter the squirrel sized dinosaur & the first forest dwelling mammals appear.
  • Jurassic Period (200)

    Jurassic Period (200)

    EVENT3. Flying reptiles called pterosaurs are in the air now.EVENT13.Whoa those dinos are getting big &dominate the land-Lizard hipped and bird-hipped appear- carnivores and herbivores have arrived.
  • Cretaceous Period (146)

    Cretaceous Period (146)

    EVENT5. First flowering plants appear-angiosperm. EVENT35.Impact hypothesis-dinosaur mass extinction.
  • Paleocene Period (65.5)

    Paleocene Period (65.5)

    EVENT12.First primates evolve.
  • Eocene Period (55.8)

    Eocene Period (55.8)

    EVENT17.Flying squirrels, whales and bats appear.EVENT26.First modern horses appear.
  • Oligocene Period (33.9)

    Oligocene Period (33.9)

    EVENT29.Small rodents evolve.
  • Miocene Period (23.0)

    Miocene Period (23.0)

    EVENT20.Species that did not evolve to survive extreme cold moved warmer climate areas or became extinct (dire wolf & giant ground sloth)
  • Pleistocene Period (1.8)

    Pleistocene Period (1.8)

    EVENT9.Homosapien (modern humans) appeared and are hunters.
  • Holocene Period (0.0115)

    Holocene Period (0.0115)

    EVENT19.The last glacial period ended and sea levels rose, Great Lakes formed.EVENT28.Modern human developed agriculture and used tools made of bronze and iron.
  • Anthropocene Period (Current Time)

    Anthropocene Period (Current Time)

    EVENT14.There is an argument as to when this epoch began, some scientists think it began with the industrial age in the early 1800's , others think it began with the atomic age in the 1950's.EVENT28.Modern humans developed agriculture and used tools made of bronze and iron.