History of Life on Earth

  • 1 CE

    Earth forms

    first day of earth
  • Period: 1 CE to

    Pre-Cambrian

  • 351

    3.8 BYA First Life on Earth

    3.8 BYA First Life on Earth
    Replicating molecules (the precursors of DNA) form.
  • Period: to

    Paleozoic

  • Period: to

    Mesozoic

  • Extinction of Dinosaurs

    65 mya
  • Period: to

    Cenozoic