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Earth is formed
This event was 4.5 billon years ago when it is thougth that gravity brought clumps of dust together. -
first forms of life on Earth
Earth had just cooled so now it could support life. 3.5 billion years ago -
Multicellular life
1st multicellular life was thought to be 3.5 billion years ago -
Eukaryotes
1st Eukaryotes appeared 2.1 billon years ago -
5 extintions
Ordovicion-Silurian 443 million years ago
Devonion 359 million years ago
Permian 248 million years ago
Triassic-Jurassic 200 million years ago
Cretaceous-Tertiary 65 million years ago -
oxygen in Earth
oxygen enters the Earths atmosphere about 2.45 billon years ago. -
Pangaea is formed
It was one giant landmass formed 270 million years ago -
Pangaea breaks apart
The one landmass seperates 200 million years ago -
Homo Sapiens
the 1st of the species appeared 200,000 years ago when they evolved