A video on the Cambrian Explosion
For some more information an fossils I havefound this article after releasing the video
http://home.entouch.net/dmd/cambevol.htm
Note that is uses a different phyla classification system and says the Cambrian period gave rise to around nine phyla rather than the 11 from my source.
Because of the gradient of classification this kind of arbitrary difference is expected.
An excellent rebuttal to the Cambiran explosion was constructed by Kevin Padian for the Dover Trial
http://www.sciohost.org/ncse/kvd/Padian/Padian_transcript.html#class
transcript and slides feature here
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