Barry D. Webby, Florentin Paris, Mary L. Droser, and Ian G. Percival, eds., 2004, Columbia University Press, New York, 484 p. (Hardcover, US $99.50) ISBN 0231-12678-6.

Have you heard the joke about the time a systematist, a taxon-counter, and a paleoecologist walked into a bar?

It is not surprising that a significant proportion of paleontological attention is focused on the Cambrian Explosion; it indeed marks the rise to dominance of skeletonized metazoans and the emergence of most phyla. But the Cambrian Radiation is inherently difficult to study: the intricacies involved in reconstructing stem-group phylogenies, the lack of a globally correlated...

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