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- 2400 mya: Start of Huronian ice age Rhyacian Period (2300 to 2050 mya) - 2200 mya: Organisms with mitochondria capable of aerobic respiration appear.

The Moon is 357,000 km from Earth.[31] Ediacaran (Vendian) Period (630 to 542 mya) - 600 mya: Formation of the supercontinent Pannotia - 600 mya: Earth day is 20.7 hours long.[35] - 590 mya: Meteor impact, 90 km crater Acraman, South Australia - 580 mya: Soft-bodied organisms developed: Jellyfish, Tribrachidium, and Cambrian Period (542 to 488.3 mya) - Abundance of multicellular life. Evidence of anoxia in oceanic bottom waters, and global cooling.

Pannotia started breaking up 550 million years ago to form Laurasia and Gondwana.

Laurasia included what are now North America, Europe, Siberia, and Greenland.

- 3500 mya: Monocellular life started ( - Oldest unambiguous microfossils date from this era. Neoarchean Era (2800 to 2500 mya) - 2800 mya: Break up of supercontinent Vaalbara. Banded Iron Formations - 2400 mya: Great Oxidation Event, also called the Oxygen Catastrophe.

Mesoarchean Era (3200 to 2800 mya) - 3000 mya: Atmosphere has 75% nitrogen, 15% carbon dioxide. Oxidation precipitates dissolved iron creating banded iron formations.[14] Anaerobic organisms are poisoned by oxygen.

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