Earth Geologic timeline

By username96

  • Cambrian

    The Cambrian is the first geological period of the Paleozoic Era, lasting from 542 to 488 or 1.7 million years ago (mya)
    The dominent life form of this period was bacteria.

  • Ordovician

  • Silurian

    The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 to 1.5 million years ago (mya), This is also the time the planets came to form?

  • Devonian

    The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 416.0 and 2.8. Differennt rocks formed.

  • Carboniferous

    The Carboniferous is a geologic period and system that extends from the end of the Devonian Period, about 359.2 and 2.5. Plants came around.

  • Permian

    Extinction of many types of marine animals including trilobites.

  • Triassic

    Earliest Dinosaurs, abundant cycads and conifers

  • Jarrisic

    Earliest birds and mammals abundant dinosaurs and ammonites

  • Cretaceouse

    Earliest flowering plants, climax of dinosaurs followed by their extinction. Great decline of brachiopods. Abundance of bony fish.

  • Tertiary

    Earliest Placental Mammals, modern mammals, large running mammals

  • Quanternary

    Quanternary
    Large Carnivores, Neanderthals, Humans, mastodons