-
Cambrian 570-500mya
-all water
-earlyest marine life
-tribites dominate -
Period: to
paleozoic
-
ordovician 500mia-435mya
-marine life took over right before extinction -
silurian435-395mya
earlist animals and plants. -
devonian395-345mya
-fish started to get legs -
carboniferous345-280mya
more amphibians -
Period: to
mesozoic
-
permian280-225mya
reptils are introdused -
triassic225-195mya
reptiles grew to dinos -
jurassic195-136mya
dinos populate and take over -
cretaceous136-65mya
early plantsclimax of dinosfollowing their extinction -
tertiary65-1.8mya
earliest mammals modern mammals larg running mammals -
Period: to
cenozoic
-
quaternary1.8-presant
large carnivores neanderthals humans mastodons
