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Cambrian

 
         
             
    CAMBRIAN : Explosion of Life on Earth
  CAMBRIAN : Explosion of Life on Earth
The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion", because of the relativel...
 
         



 
 
         
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