-
100
Quanternary Era
As mammals diversified, we finally had humans evolve from monkeys. An example of a life form in this era was the primitive hourse. -
150
Cretaceous Era
During the cretaceous era, dinosaurs were believed to go extinct. We had our first primates discovered as well as flowering plants. -
245
Triassic Period
245 million years ago, the first dinosaurs roamed the planet. We also had our first land and sea mammals. -
300
Permian Era
300 million years ago, primitive reptile fossils were discovered. Major extinctions happened around this time period. Also many reptiles diversify 300 million years ago. -
350
Mississippian Era
The first reptiles, scale trees and ferns were discovered. -
400
Silurian Era
During this period, the first vascular land plants were discovered along with pimitive fish. Brachiopods were discovered in this era. -
550
Cambrian Era
During this time period, the first fishes were discovered as well as the first chordates. Trilobites were common fossils around this time. -
Jan 1, 650
Late Protozoic Era
The first skeletal elements were discovered. The First soft-bodied metzoans were discovered as well as the first signs of animal traces. -
Period: Jan 1, 650 to
Era