Are the Ediacarans Transitional Forms for the Cambrian Explosion?

Another paper in PNAS tackles the Cambrian explosion with the usual confident-sounding headline: "The advent of animals: The view from the Ediacaran." This entry by Mary L. Droser of UC Riverside and James G. Gehling of the University of Adelaide (edited, incidentally, by Neil "Your Inner Fish" Shubin) promises much but delivers little. And, like the others published papers in scientific journals, it completely ignores the challenge to evolution presented by Stephen Meyer in Darwin's Doubt.

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