Geologic Time Line

Formation of the earth

4.6 Ga

Formation of the Earth’s moon

4.53 Ga

Formation of the Earth’s core

4.5 Ga

First Oceans

4.4 Ga

Oldest rock on Earth

4.0 Ga

First Single cell life

3.55 Ga

First plate tectonic activity

3.2 Ga

Great Oxidation Event

2.4 Ga

First multicellular life

600 Ma

Start of the Paleozoic era

541 Ma

Start of the Mesozoic era

252 Ma

Start of the Cenozoic era

66 Ma

First vertebrates (fish)

530 Ma

First Land Plants

420 Ma

First insects

400 Ma

First vertebrates on land

350 Ma

First dinosaurs

225 Ma

Formation of Rocky Mountains

80 Ma

Extinction of non avian dinosaurs

66 Ma, marks the change from the Mesozoic era to the Cenozoic era

First humans

2.6 Ma