Becoming an earthlike planet : 4.6-4.5 GA
Life, death, and the newly discovered place in between
Forming life : 4.2(?)-3.5 GA
From origin to oxygenation : 3.5-2.0 GA
The long road to animals : 2.0-1.0 GA
The Cryogenian and the evolution of animals : 850-635 MA
The Cambrian explosion : 600-500 MA
The Ordovician-Devonian expansion of animals : 500-360 MA
Tiktaalik and the invasion of the land : 475-300 MA
The age of arthropods : 350-300 MA
The great dying : anoxia and global stagnation : 252-250 MA
The Triassic explosion : 252-200 MA
Dinosaur hegemony in a low-oxygen world : 230-180 MA
The greenhouse oceans : 200-65 MA
Death of the dinosaurs : 65 MA
The long-delayed third age of mammals : 65-60 MA
The age of birds : 50-2.5 MA
Humanity and the tenth extinction : 2.5 MA to present
The knowable futures of Earth life.
