-
Cambrian 570 - 500 MYA
The beginning. Multicellular. Marine life Trilobites are dominant. -
Ordovician 500 - 435 MYA
Echinoderms- Starfish, sand dollar, sea urchin & Sea cucumbers. Invertebrates are introduced. -
Siluvian 285 M - 65 M
Earliest Ferrestrial plants & animals. -
Devonian
Armored fish go extinct, but abundance of several species of fish -
Carboniferous 345M - 280M
Abundant sharks and amphibians, Large swamps and coal apear. -
Permian 280M - 225M
Extinction of many types of marine animals including trilobites -
Triassic 225M - 195M
Earliest dinosaurs, abundant cycades and conifers -
Jurassic 195M - 135M
Earliest birds and mammals. Abundant dinosaurs -
Cretaceous 136M - 65M
Earliest flowering plants, climax of dinosaurs following there extiction -
Quaternary 1.8M - Present
Large Carnivores, Neanderthals, humans, and mostodons