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Period: to
Geology
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Cambrian 570 M-500 M
Earliest Record of Marine life. Trilobites are abundant. -
Ordovician 500M- 435 M
Invertebrates are abundant. Earliest Fish that are Jawless evolve and later, jawed and armored fish. -
Silurian 435 M- 395M
Earliest land plants and animals. -
Devonian 395 M- 345M
Armored fish go extinct, but fish thrive. Earliest amphibians evolve. -
Carboniferous 345M-280M
Abundant sharks and amphibians. Large swamps and coal forming forests. Earliest reptiles. -
Permian 280 M-225M
Mass Extintion of lots of Marine Life. -
Triassic- 225M-195M
Early Dinosaurs, and confers -
Jurassic- 195M-136M
Earliest birds and mammals, abundant dinosaurs -
Cretaceous- 136M-65M
Earliest flowering plants, Height of dinosaurs, but metoroite made them extinct. Lots of of bony fish. -
Tertiary- 65 M- 1.8M
Earliest Pouch Mammals, birth of modern mammals, and large running mammals -
Quaternary- 1.8 M – Present
the birth of Humans