>Another popular error with regard to the Cambrian explosion is to claim
>that there is no evolutionary explanation for it. There are at least half
>a dozen scenarios, mostly not mutually exclusive. Proving that one or
>another was the most important factor may be impossible, but there is
>evidence that some of the potential causes were in place, whether or not
>they had much effect.
The Paleonet email list just had another idea mentioned on it, namely the
effects of the evolution of eyes.
David C.
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