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Cambrain( 570 million yers ago
In this time period multi celled life forms began to flourish in the marine areas of the earth. -
ordovician 500 M- 435m
in this time period large amounts of enchinoderms populated the earths oceans,invertebrates ,mollusks and jawed armored fish are adundant in this time period. -
Silurian 435 M- 395M
During this time period there were the earliest signs of terrestrial plants and animals developing such as tiktaalik nad eurypterids. -
Devonian 395 M- 345M
with ana extinction of most armored fish, several other species of fish and ammonites thrive, amphibians soone come after. -
Carboniferous 345m-280m
large swamps and forrests sprout up along with a abundance of saharks and various species amphibians, even the earliest reptiles come from this period of time. -
permian 280m-225m
during this period a mass extinction occured of many types of marine animals on earth including trilobites. -
Triassic 225m-195m
during this period there lived the earliest species of dinosaurs and was abundant with cycads and conifers. -
Jurassic 195m-136m
this period in time gave birth to the earliest form of birds and mammals, though dinosaurs were still dominate species on earth. -
cretaceous 136m-65m
this period was the climax of the dinosaurs , but was followed by thier extinction ,there way also a large decline in brachiopods, as there began to be a largeamouynt of bony fish. -
Tertiary 65m - 1.8m
this period gave birth to lots of modern mammals we see today,along with placental mammals , and large running mammals. -
Quaternary 1.8m -present
this period in time was ruled by large carnivores, and gave us the earliest neanderthals ,and humans. we also are still living in this time period(;
