-
Period: 500 BCE to 435 BCE
Ordovician
Invertebrates are dominant and mollusks become abundant -
Period: 435 BCE to 395 BCE
Silurian
Earliest terrestrial plants and animals -
Period: 395 BCE to 345 BCE
Devonian
Armored fish go extinct. Earliest sign of amphibians -
Period: 345 BCE to 280 BCE
Carboniferous
Abundant sharks,amphibians,large swamps and coal mining forests -
Period: 225 BCE to 195 BCE
Triassic
Earliest dinosaurs, abundant cycads and conifers -
Period: 195 BCE to 136 BCE
Jurassic
Earliest birds and mammals. Abundant dinosaurs -
Period: 136 BCE to 65 BCE
Cretaceous
Earliest flowering plants. Climax of the dinosaurs -
Period: 570 to 500 BCE
Cambrian
Earliest record of marine life