jonathans geological time line

Cambrian 570-500mya

Sep 11, 1925

-all water
-earlyest marine life
-tribites dominate

paleozoic

Period: Sep 11, 1925 to Sep 11, 1973

ordovician 500mia-435mya

Sep 11, 1936

-marine life took over right before extinction

silurian435-395mya

Sep 11, 1943

earlist animals and plants.

devonian395-345mya

Sep 11, 1952

-fish started to get legs

carboniferous345-280mya

Sep 11, 1963

more amphibians

mesozoic

Period: Sep 11, 1973 to Sep 11, 2001

permian280-225mya

Sep 16, 1973

reptils are introdused

triassic225-195mya

Sep 11, 1978

reptiles grew to dinos

jurassic195-136mya

Sep 11, 1988

dinos populate and take over

cretaceous136-65mya

Sep 17, 2001

early plantsclimax of dinosfollowing their extinction

tertiary65-1.8mya

Sep 11, 2012

earliest mammals modern mammals larg running mammals

cenozoic

Period: Sep 11, 2012 to Dec 11, 2012

quaternary1.8-presant

Dec 11, 2012

large carnivores neanderthals humans mastodons