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How Many Mass Extinctions Have There Been?

Author: 
Jon Dough

Extinction chartWhen you ask someone what they know about the past mass extinction events on Earth, they will most likely only remember the Late Cretaceous extinction that was about 66 million years ago. 

A few people might remember the "Big Five" extinction events. Did you know that there were even more than that?

This video by MinuteEarth is sure to enlighten you on this fascinating subject.