History of Earth

Earth is formed

Jan 1, 2000

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

Jan 4, 2000

Earth had just cooled so now it could support life. 3.5 billion years ago

Multicellular life

Jan 4, 2000

1st multicellular life was thought to be 3.5 billion years ago

Eukaryotes

Jan 8, 2000

1st Eukaryotes appeared 2.1 billon years ago

5 extintions

Jan 16, 2000

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

Jan 23, 2000

oxygen enters the Earths atmosphere about 2.45 billon years ago.

Pangaea is formed

Jan 26, 2000

It was one giant landmass formed 270 million years ago

Pangaea breaks apart

Jan 27, 2000

The one landmass seperates 200 million years ago

Homo Sapiens

Jan 31, 2000

the 1st of the species appeared 200,000 years ago when they evolved