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Period: to
geology
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Cambrian Period 570-480 MYA
The Cambrian had an abundant amount of marine organisms. The earth was a waterworld.All life was marine and not on land. -
Ordovician Period 480-440 MYA
Complex marine life on this water world.
Many volcanoes erupting caused mass extinction, killing off most of life. -
Silurian Period 440-420 MYA
First land creatures were moss-like plants that thrived around lakes and rivers.
Marine life continued to become more diverse. -
Devonian Period 420-360 MYA
More diversity in marine life.
First species grew legs in order to move on land.
Plants grew true roots and developed seeds in order to spread themselves. -
Carboniferous Period 360-300 MYA
Coal was formed globaly during Carboniferous.
Amphibians dominated the lands.
Continents thrashed together to form Pangea -
Permian Period 300-250 MYA
All the continents are combined, forming Pangea.
Life continued to exist in harmony.
Ended with the largest mass extinction where 90% of marine life died along with 70% of land life to die. -
Triassic Period 250-200 MYA
Archosaurs dominated the land.
First flying creatures introduced.
Climate became more more humid as continent broke apart. -
Jurassic Period 200-145 MYA
"Age of the Dinosaurs"
Dinosaurs dominated the land
Continents split up moving where one part moved north and the other moved south.
Ended with a meteor hitting earth, creating toxic gas that spread throughout the world. -
Cretaceous Period 155-68 MYA
The continents were already breaking apart and the dinosaurs continued to roam around. The first flowering trees developed. A giant meteor hit the earth causing toxins to make the surface unbreathable, killing all the dinosaurs and pretty much everything else. -
Tertiary Period 66-23 MYA
The species that survived the meteor crash that ended the dinosaurs were about to experience the global cooling. mammals and birds were the dominate species. As temperatures dropped, so did sea level. This opened up land bridges that connected the continents. Ended with the Ice Age -
Quatermary Period 22-2 MYA
Age of Humans. As Ice Ages happened, mammals developed fur to fend off the cold. The First humans to appear were the Homo Erectus. The Globe suffered between Global Cooling and Global Warming.
