Geological Time Scale
Earth's 4.6-billion-year history, marking key moments in the evolution of life and the planet's transformation. Explore the timeline to see how Earth's past has shaped its present.
4.6 - 4.0 Billion Years Ago
4.0 - 2.5 Billion Years Ago
3.6 - 3.2 Billion Years Ago
3.2 - 2.8 Billion Years Ago
2.8 - 2.5 Billion Years Ago
2.5 - 1.6 Billion Years Ago
2.5 Billion - 541 Million Years Ago
1.6 - 1.0 Billion Years Ago
1.0 billion - 541 Million Years Ago
635 - 541 Million Years Ago
541 - 485.4 Million Years Ago
485.4 - 443.8 Million Years Ago
443.8 - 419.2 Million Years Ago
419.2 - 358.9 Million Years Ago
358.9 - 298.9 Million Years Ago
298.9 - 252.2 Million Years Ago
252.2 - 66 Million Years Ago
252.2 - 201.3 Million Years Ago
Hadean
4.6 - 4.0 Billion Years Ago
Archean
4.0 - 2.5 Billion Years Ago
Paleoarchean
3.6 - 3.2 Billion Years Ago
Mesoarchean
3.2 - 2.8 Billion Years Ago
Neoarchean
2.8 - 2.5 Billion Years Ago
Paleoproterozoic
2.5 - 1.6 Billion Years Ago
Proterozoic
2.5 Billion - 541 Million Years Ago
Phanerozoic
Paleozoic
Mesoproterozoic
1.6 - 1.0 Billion Years Ago
Neoproterozoic
1.0 billion - 541 Million Years Ago
Ediacaran
635 - 541 Million Years Ago
Cambrian
541 - 485.4 Million Years Ago
Ordovician
485.4 - 443.8 Million Years Ago
Silurian
443.8 - 419.2 Million Years Ago
Devonian
419.2 - 358.9 Million Years Ago
Carboniferous
358.9 - 298.9 Million Years Ago
Permian
298.9 - 252.2 Million Years Ago
Mesozoic
252.2 - 66 Million Years Ago
Triassic
252.2 - 201.3 Million Years Ago