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Cambrian 570 MYA -500
There was Abundant life in the ocean -
Ordovician 485 MYA -440 MYA
During this period, the area north of the tropics was almost entirely ocean, and most of the world's land was collected into the southern supercontinent Gondwana. -
Silurian 443MYA - 416MYA
The Silurian, was a time when the Earth underwent considerable changes that had important repercussions for the environment and life within it. One result of these changes was the melting of large glacial formations. -
Devonian 419MYA- 358MYA
The vegetation of the early Devonian consisted primarily of small plants, the tallest being only a meter tall. By the end of the Devonian, ferns, horsetails and seed plants had also appeared, producing the first trees and the first forests.Life can finally excel. -
Carboniferous 359MYA- 299MYA
The world had alot of coal. -
Permian 300MYA - 252MYA
The biggest exction in earths history -
Trassic 250MYA - 200MYA
Earlist dinosaurs were in the earth -
Jurrasic 200MYA - 145MYA
Great plant-eating dinosaurs roaming the earth, Also the first birds were in earth. -
Cretaceous 145 MYA -65MYA
The most famous of all mass extinctions marks the end of the Cretaceous Period, about 65 million years ago. As everyone knows, this was the great extinction in which the dinosaurs died out, except for the birds, of course -
Tertiary 66MYA - 2.5MYA
Non avina dinaours died off and the ice age was coming. -
Quaternary 2.6 MYA - NOW
When humans first were alive and the current period we live in. Only has been around for 2.5
