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*Paleozoic and Mesozoic


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Cambrian
The Age of Trilobites. Explosion of lifeforms, Laurasia and Gondwana supercontinents form, ends with minor extinction.
Ordovician
Invertebrates dominate, fish appear, ends with huge O-S extinction event.
Silurian
Jawed and bony fish appear, vascular plants form the first life on land.
Devonian
The Age of Fish. Terrestrial ecosystem forms, insects and amphibians appear, ends with mass extinction.
Carboniferous
Coal beds form from vast rainforests, winged insects and reptiles appear, amphibians dominate the land.
Permian
The Age of Amphibians. Climate becomes arid, Pangaea forms, reptiles slowly rise to dominance, ends with largest mass extinction ever.
Triassic
Dinosaurs and mammals appear, Pangaea splits, starts and ends with mass extinction.
Jurassic
Dinosaurs dominate, climate shifts from dry to humid, birds and flowering plants appear.
Cretaceous
Modern continents form, new mammals and birds appear, ends with the large K-T extinction which wipes out most dinosaurs.