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cambrian 570-500 MYA
At the beginning of paleozoic, was the first time that multi-cellular life forms flourished on earth. By the end of the paleozoic, and beginning of the earth came togather to form the giant continent called pangea and dinosaurs began to roam on land. -
Ordovician 500-435 MYA
echinoderms invertebrates are the most domiant during that time, mollusks become abundant, and the earliest fish fish are jawless and later become armored and jawed. -
silurian 435-395 MYA
At this time, the earliest plants and anamials were just getting started. -
devonian 395-345 MYA
armored fish go extinct, and the raise of the earliest amphibians start. -
carboniferous 345-280 MYA
large swamps and the earliest reptiles arised, also scaled trees and seed ferns appeared at this time. -
permain 280-255 MYA
meny different types of marine anamials started to develop. -
triassic 225-195 MYA
the earliest birds and mammals were abundent but ammonites were on there climax. Also the earliest dinosaurs appeared. -
jurassic 195-136 MYA
the earliest birds, mammals werer abundent, and dinosaurs were dominant. -
cretaceous 136-65 MYA
the earliest flower plants appeared and the climax of dinosaurs. -
Tertiary 65-1.8 MYA
earliest placental mammals and large running mammals. -
quaternary 1.8-present
large carnivores, humans, and mastodonians rule the world.
