Time runs left (older) → right (younger) · Hover a card for details
Mammals diversify rapidly into niches left by dinosaurs (66-56 Ma).
66.00 Ma – 56.00 Ma · 10.00 Ma duration
Axis labels in Ma (millions of years ago) ·
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Paleocene Epoch 2
66 MaChicxulub ImpactAsteroid ends the Mesozoic10 km asteroid strikes Yucatan; triggers mass extinction.
66 MaEnd-Cretaceous ExtinctionK-Pg event — dinosaurs go extinctChicxulub asteroid impact ends the Mesozoic. Non-avian dinosaurs, mosasaurs and ammonites disappear.