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.
4. Late Devonian extinctions, at the Frasnian/Famennian junction.
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.
List of extinction events Facts for Kids. Kiddle Encyclopedia.