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OpenStudy (anonymous):
What is the sudden appearance of a large array of animal life known as?
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OpenStudy (anonymous):
The Cambrian Explosion..
OpenStudy (anonymous):
The Cambrian explosion was the rapid appearance of different animal groups that was found. This occurred between 70 and 80 millions years ago and has been documented through research.
OpenStudy (anonymous):
yes Cambrian explosion
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