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Extinction event

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Definition

noun

An event in geologic time that depicts of the extinction of one of more species in a relatively short period, usually as a consequence of a catastrophic global event, a natural disaster, or an abrupt change in the environment, and based on studies of fossil records and macroscopic evidence.


Supplement

Examples include Permian extinction of marine species, and Cretaceous extinction of various species, including dinosaurs.


Synonym(s):