Jason's Geological timeline

By eulisjas14

  • Cambrian period 570-500 mya

    earliest record of marine life trilobites are dominant

  • Orvovician period 500mya-450mya

    echinoderms, vertebrates dominant,mollusks abundant. earliest fish dominant

  • Silurian period 435mya-395mya

    earliest plants,and animals arrive

  • Devonian period395mya-345mya

    armored fish go extinct, butseveral different species of fish. Earliest forms of amphibians form.

  • Carboniferous period 345mya-280mya

    lots of sharks and amphibians.

  • the Permian period 280mya-225mya

    extinction of many types of marine life including trilobites

  • triassic period 225 mya-195mya

    earliest dinosaurs, abundant of cycads

  • Jurassic p[eriod 195mya-136mya

    earliest of birds and mammals. abundance of dinosaurs

  • Cretacious period136mya-65mya

    Earliest flowering plants. the extinction of dinosaurs bony fish are thriving

  • Tertiary period 65mya-1.8mya

    placenta mammals,modern mammals, large running mammals

  • Quarternary period 1.8mya-present

    humans and mammals thrive