K-T extinction event

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English[edit]

Wikipedia

Alternative forms[edit]

Noun[edit]

K-T extinction event (uncountable)

  1. The rapid dying off of a large percentage of all animal species in a comparatively short period of time 65.5 million years ago. This coincides with the end of the Cretaceous period, and may have been caused by an impact event.

See also[edit]