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New time line for appearances of skeletal animals in fossil record

Harlequinmania

By Harlequinmania,
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Harlequinmania

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Beginning around 542 million years ago, a profusion of animals with shells and skeletons began to appear in the fossil record. So many life forms appeared during this time that it is often referred to as the "Cambrian Explosion." Geologists have now proposed a rethinking of the timeline of these early animal appearances.

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1000 Gallon Tank in the Hole 

http://www.sgreefclub.com/forum/topic/120957-1000-gallon-3d-hole-in-the-wall/ 

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