-
4500 BCE
Earth is born
Earth is a ball of lava -
4400 BCE
The crust
The magma cools and a crust begins to from -
4000 BCE
Water
Asteroids deliver water to the earth and causing the rain for millions of years. Water is green due to lots of iron in it. -
3400 BCE
Continents
the Continents begin to form and grow for 1 billion years -
2500 BCE
Oxygen
Single celled organism begin to produce oxygen -
1500 BCE
Blue Skies and Seas
The iron in the ocean sinks and the sky becomes filled with oxygen
Rodinia also forms -
541 BCE
Cambrian
Cambrian explosion. During this time earth had the most diverse species. Mostly Marine life -
485 BCE
Ordovician
Tectonic movement that caused huge changes in climate and biological systems. -
443 BCE
Silurian
During this time continental plates were low and sea levels had risen -
419 BCE
Devonian
Late in the period the first four-legged amphibians appeared, indicating the colonization of land by vertebrates. -
358 BCE
Carboniferous
During this period much of the landscape was filled with swamps, this is where we get much of our carbon from -
Period: 298 BCE to 251 BCE
Permian
Ended with a mass extinction, about 90% of species died -
251 BCE
Triassic
The early dinosaurs roamed the supercontinent of Pangea, ended in a mass extinction on 85-90% of species -
201 BCE
Jurassic
Pangea had begun to separate and create Laurasia to the north, and Gondwana to the south -
Period: 145 BCE to 65 BCE
Cretaceous
The final time period for the dinosaurs, there was a diverse amount of species and some of the largest land animals lived during this period -
65 BCE
Tertiary
An interval of enormous geologic, climatic, oceanographic, and biological change. The beginning of mammals being dominant -
3 BCE
Quaternary
Large glacial movements, during this time earth saw a large change in climate. Earliest humans form
