-
Period: 4540 BCE to 4400 BCE
Hadean
Earth was formed from the cluster of solar nebula due to the gravitational and electrostatic force. The temperature is extremely hot and the atmosphere is nebular but it started to cool down. -
Period: 4000 BCE to 2500 BCE
Archean
Earth's crust has cooled to a degree enabling life and continent to form. -
Period: 2500 BCE to 541 BCE
Proterozoic
Multicellular life was formed, bacteria began to produce oxygen to the atmosphere, plants, animals and fungi formed. -
600 BCE
Precambrian
-
543 BCE
Cambrian
-
Period: 543 BCE to 300 BCE
Paleozoic
The era began with the breakup of one supercontinent and the formation of another. Plants became widespread. And the first vertebrate animals colonized land -
Period: 541 BCE to 1 CE
Phanerozoic
Complex life, including vertebrates, begin to dominate the Earth's ocean in a process known as the Cambrian explosion. Pangaea forms and later dissolves into Laurasia and Gondwana, which in turn dissolve into the current continents. -
489 BCE
Ordovician
-
443 BCE
Silurian
-
418 BCE
Devonian
-
362 BCE
Carboniferous
-
300 BCE
Permian
-
251 BCE
Triassic
-
Period: 251 BCE to 146 BCE
Mesozoic
During the Mesozoic, or "Middle Life" Era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs. -
200 BCE
Jurassic
-
146 BCE
Cretaceous
-
Period: 146 BCE to 1 BCE
Cenozoic
Cenozoic Era, third of the major eras of Earth’s history, beginning about 66 million years ago and extending to the present. It was the interval of time during which the continents assumed their modern configuration and geographic positions and during which Earth’s flora and fauna evolved toward those of the present. -
65 BCE
Tertiary
-
1 BCE
Quaternary
