JJ Graham Geologic Timeline

By Jnova
  • Quaternary period
    595 BCE

    Quaternary period

    Lyell in the 1830s, the Quaternary Period was divided into two epochs, the Pleistocene and the Holocene, with the Pleistocene (and therefore the Quaternary) understood to have begun some 1.8 million years ago
  • Cambrian Period- 570 - 500 MYA
    570 BCE

    Cambrian Period- 570 - 500 MYA

    Trilobites were the dominant species during the Cambrian Period, 540 to 490 million years ago.
  • Carboniferous period
    544 BCE

    Carboniferous period

    Famous for its vast swamp forests, lasted from about 359.2 to 299 million years ago
  • Tertiary period
    525 BCE

    Tertiary period

    lasting from approximately 66 million to 2.6 million years ago. It is the traditional name for the first of two periods in the Cenozoic Era (66 million years ago to the present)
  • Devonian period
    520 BCE

    Devonian period

    Paleozoic, spanning 60 million years from the end of the Silurian, 419.2 million years ago
  • Silurian period
    500 BCE

    Silurian period

    The Silurian Period occurred from 443 million to 416 million years ago.
  • Cretaceous period
    495 BCE

    Cretaceous period

    The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and was succeeded by the Paleogene Period
  • Ordovician period
    488 BCE

    Ordovician period

    Area north of the tropics was almost entirely ocean, and most of the world's land was collected into the southern supercontinent Gondwana
  • Triassic period
    475 BCE

    Triassic period

    Mesozoic Era and occurred between 251 million and 199 million years ago.
  • Permian period
    440 BCE

    Permian period

    Which ended in the largest mass extinction the Earth has ever known, The emerging supercontinent of Pangaea
  • Jurassic period
    510

    Jurassic period

    It occurred from 199.6 to 145.5 million years ago, following the Triassic Period and preceding the Cretaceous Period.