-
Period: to
Geological Time Line
-
Cambrain (570- 500 million years ago)
Earliest record of marine life- Trilobites are dominate -
Ordovician (500-435 million years ago)
Echinoderms- Starfish, Sanddollar, Sea Urchins. Earliest fish that are always jawless, and later Jawed armored fish. -
Silurian(435-395 million years go
Earliest terrestrial plants, and animals. Tiktaalik Eurypterids develop. -
Devonian(395-345 million years ago)
Armored fish go extinct, but an abundance of serveral species of fish- Earliest amphibians. -
Carboniferous(345-280 million years go)
Abundant shoreless, and amphibians. Large swamp and coal farming in forests- Earliest Reptiles, and trees -
Permian (280-225 million years ago)
Extinction of many types of marine animals including trilobites. -
Triassic (225-195 million years ago)
Earliest dinosaurs, abundant cyads, and conifers. -
Jurassic (195-136 million years ago)
Earliest birds, and mammals. Abundant dinosaurs, and ammonites. -
Cretaceous (136- 65 million years ago)
Earliest flowering plants, climax of dinosaurs followed by extinction. -
Tertiary (65-1.8 million years ago)
Earliest placement mammals, modern mammals, and large running mammals. -
Quaternary (1.8 million- Present)
Large carnivores, Neanderthals, humans, and mastodoms.