need help please !!!

Biology
Tutor: None Selected Time limit: 1 Day

which of these animals is considered a model for pnctuated equilibrum?

whale

ammonite 

Archaeopteryx 

 I already know that its not ammonite but i cant figure out which one it is 

Sep 24th, 2014

whale

Sep 24th, 2014

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Sep 24th, 2014
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Sep 24th, 2014
Dec 9th, 2016
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