Precambrian

The Precambrian supereon is the first phase in the Earth's history. It began with the creation of the Earth 4.55 billion years ago and ended 540 million years ago.

It is usually divided into 3 eons:

- The Hadean (4.55 to 3.9 bn years);
- The Archean (3.9 to 2.5 bn years);
- The Protozoic (2.5 to 0.54 bn years).

The Precambrian supereon alone represents 90% of the Earth's history. During this time the continents, the oceans, tectonics and life appeared.