-
formation of the earth
Hadean period
Precambrian Era
Started 4600 Million years ago -
Ediacaran biota
Neoprptezoic period
Precambrian Era
Started 900 million years ago -
Invertibrates dominant; first corals; first vertebrates
Ordovician period
Palaezoic Era
Started 490 Million years ago -
Age of Amphibians; first reptiles
Carbonferous period
Palaezoic Era
Started 354 million years ago -
Rise of reptiles
Permian Period
Palaezoic Era
Started 298 Million years ago -
First dinosaurs; first mammals
Jurassic Period
Mesozoic Era
Started 205 Million years ago -
First Birds
Cretaceous Period
Mesozoic Era
Started 141 Million years ago -
Land dominated by mammals
Eocene
Cainozoic Era
Started 33.7 Million years ago