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  Topic: Fossils older than dinos reveal early evol.< Next Oldest | Next Newest >  
Henry J



Posts: 4565
Joined: Mar. 2005

(Permalink) Posted: July 30 2007,17:51   

Fossils older than dinosaurs reveal pattern of early animal evolution on Earth
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The abundant diversity of characteristics within species likely helped fuel the proliferation and evolution of an odd-looking creature that emerged from an unprecedented explosion of life on Earth more than 500 million years ago.

Of course, "explosion" isn't really the right terminology for something that took place over several millions of years.
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But during the Cambrian Period, more complex creatures with skeletons, eyes and limbs emerged with amazing suddenness.

Methinks it was likely the equivalent of what we call an "arms race" - lots of factions developing various strategies to cope with each other. All at once because once a few started developing more advanced strategies, anybody that didn't cope quickly enough went extinct. Leastwise that's my take on it.

Henry

  
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