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Science 4 July 2008:
Vol. 321. no. 5885, pp. 24 - 25
DOI: 10.1126/science.321.5885.24a
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News of the Week

PALEONTOLOGY:
Life's Innovations Let It Diversify, at Least Up to a Point

Richard A. Kerr

On page 97 of this week's issue of Science, paleontologists present a renalaysis of the total diversity of marine invertebrates over the past 400 million years.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)