Definition for Revision history of "Cambrian explosion"

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  • (cur | prev) 18:47, 16 February 2011‎ Wonderworld (Talk | contribs)‎ . . (154 bytes) (+154)‎ . . (Created page with "An event during the Cambrian period (543 mya to 490 mya) in which there was an abrupt increase (on a geological scale) in the diversity of animal species.")
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