Major Events In Earth's History

By mkehnert
  • 3 BCE

    Mesoarchean

    Mesoarchean
    3,200 to 2,800 million years ago
  • 2 BCE

    Paleoarchean

    Paleoarchean
    4 to 2.5 billion years ago. Earliest traces of life found in the Archean era. Limited to oceans and single-celled. Used other elements than oxygen to survive.
  • 1 BCE

    Eorarchean

    4.5 to 4 billion years ago. Earth and the Moon was formed. No record of life.
  • 4

    Neoarchean

    2,000 to 2,500 million years ago.
  • 5

    Proterozoic

    Proterozoic
    Just before proliferation of complex life on Earth
  • 5

    Mesoproterozoic

    1,600 to 1,000 million years ago and the first period of Earth's history of which a fairly definitive geological record survives.
  • 8

    Neoproterozoic

    Neoproterozoic
    1,00o to 541 million years ago and is the last era of the Precambrian Supereon and the Proterozoic Eon; it is subdivided into the Tonian, Cryogenian, and Ediacaran Periods.
  • 9

    Paleozoic

    Paleozoic
    541 to 485 million years ago. Lineage of living animals diversified and moss grew on land with association to fungi
  • 10

    Paleozoic

    419 to 200 million years ago. Organisms start to move to land and there were massive environmental changes
  • 11

    Mesozoic

    Mesozoic
    200 to 66 million years ago. Dinosaurs became the largest land herbivores and predators. Mammals were small and nocturnal. Then mass extinction.
  • 12

    Cenozoic

    Cenozoic
    66 million years ago to present. Mammals replaced dinosaurs, great spread of grasslands, ice ages, humans emerged, and modern day.