Earth Time Line
By: Hannah Patterson
The Big Bang
3,500 Precambrian Era
600 Cambrian Period
500 Ordovician Period
Origin of all major animal phyla, and animal diversity abounds; first jawless appear
440- 410
Silurian Period
360
Second mass extinction
360-290 Carboniferous Period
280-250 Permian Period
250
Third mass extinction
200
Fourth mass extinction
65 Paleogene Period
Mammals take the dinosaurs place
25-10 Neogene Period
Hominis descend from the trees