Precambrian

1.1. Hadean
1.2. Eoarchaean
1.3. Palaeoarchaean
1.4. Mesoarchaean
1.5. Neoarchaean

2.1. Siderian
2.2. Rhyacian
2.3. Orosirian
2.4. Statherian
2.5. Calymmian
2.6. Ectasian
2.7. Stenian
2.8. Tonian
2.9. Cryogenian