K-T extinction event(Noun)
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.
The numerical value of k-t extinction event in Chaldean Numerology is: 8
The numerical value of k-t extinction event in Pythagorean Numerology is: 5
Sample Sentences & Example Usage
These formations were thought to preserve ecosystems that were recovering from this mass extinction event, if they are actually later in the time like The Chaares Formation, then it tell us they have very little to do with this recovery.
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"k-t extinction event." Definitions.net. STANDS4 LLC, 2017. Web. 24 Jun 2017. <http://www.definitions.net/definition/k-t extinction event>.