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List of extinction events
An extinction event is a relatively fast drop in the number of species living on Earth. It occurs when the rate of extinction increases more than the rate of speciation. This is a list of the largest. Major extinction events are important to both geology and evolution.
Lesser Phanerozoic extinctions
Other extinction events in the Phanerozoic also had significant impact on the evolution of the biota.
- Eocene–Oligocene transition. From the middle of the Eocene to early in the Oligocene there were a number of events. The climate became much cooler, ice formed on Antarctica, and there was a turnover in aquatic and terrestrial groups.
- Vendian/Cambrian extinction event. Extinctions have been claimed for three groups: the acritarchs, trace fossils, and the famous Ediacaran fossils. Not much is known about this event.
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