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Earth Eras through Time

By mcedwards
  • Precambrian Era

    Precambrian Era

    Covers about 88% of Earth's history. First single-celled organisms appear. First multi-cellular organisms begin to appear
  • Paleozoic Era

    Paleozoic Era

    The Paleozoic Era is comprised of the Age of Invertebrates, the Age of Fishes, and the Age of Amphibians.
  • Mesozoic Era

    Mesozoic Era

    Also known as the age of Reptiles, this is comprised of the Triassic, Jurassic, and the Cretaceous periods.
  • Cenozoic Era

    Cenozoic Era

    Composed of the tertiary and quartenary periods, this era includes the extinction of the dinosaurs and ushers in the Age of Mammals. Also in this period, humans began to develop.
  • Quartinary Period (Common Era)

    Quartinary Period (Common Era)

    Homo Sapien has become the dominant species on the planet. Majority of large mammals and reptiles have become extinct. Humans began to utilize agriculture, utilize tools, and formed communities.

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