Precambrian Eon-Hadean

First major event that happened in the formation of the solar system. From 4600-3800 Mya, no fossils have been found this old.

From 3800-2500 Mya, surface of the Earth turns from molten to solid rock. The oldest rocks have been dated the this eon and potentiality the first bacteria/algae fossils. Continents start to form.

Precambrian Eon-Archean

Precambrian Eon-Proterozoic

From 2500 – 570 Mya, this is the largest eon. The atmosphere enriches with oxygen due to bacteria and the ozone layer starts to form. Super continent Rodinia forms around 800 Mya.

Phanerozoic Eon

Phanerozoic Eon Timeline

Spans from 570-245 Mya. The beginning was known as the "Age of The Invertebrates", Trilobites are dominant and the first fish appear with the first organisms with shells.

Paleozoic Era-Beginning