-
570 BCE
Cambrian (570m-500m) Paleozoic Ear
Earliest record of marine life -
500 BCE
Ordovician (500m-435m) paleozoic Era
(starfish,sand dollars, sea urchin, and sea cucumbers) Invertebrates are dominate, mollusks, become abundant, Earliest fish that are jawless and later jawed armor fish. -
435 BCE
Silurian (435m- 395m) Paleozoic Era
Earliest terrestrial plants and animals. (tikkalik) -
396 BCE
Devonian (395m-345m) Paleozoic Era
Armor fish go extinct, but abundance of several species of fish, Earliest amphibians and ammonites. -
345 BCE
Carboniferous (345m-280m) Palaeozoic Era
(Mississippian, Pennsylvanian) Abundant sharks and amphibians. Large swamps and coal farming forest. Earliest reptiles, scaled trees, and seed ferns. -
280 BCE
Permian (280m-225m) Palaeozoic Era
Extinction of many types of marine animals including Trioblites -
225 BCE
Triassic (225m-195m) Mesozoic Era
Earliest Dinosaurs, abundant cycads and conifers. -
195 BCE
Jurassic (195m-136m) Mesozoic Era
Earliest birds and mammals abundant dinosaurs and ammonites. -
136 BCE
Cretaceous (136m-65m) Mesozoic Era
Earliest flowering plants, Climax of dinosaurs followed by their extinction. Great decline of Brachiopods of Biny fish. -
65 BCE
Tertiary (65m-1.8m) Cenozoic Era
Earliest Placental mammals, modern mammals, large running mammals