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Science 17 April 2009:
Vol. 324. no. 5925, pp. 341 - 342
DOI: 10.1126/science.1172783
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Perspectives

PALEONTOLOGY:
Emerging onto a Tangled Bank

Matt Friedman

Fossils reveal how early tetrapods moved from water to land at an individual--rather than a phylogenetic--scale.

Committee on Evolutionary Biology, University of Chicago, 1025 East 57th Street, Chicago, IL 60637, USA, and Department of Geology, Field Museum, 1400 South Lake Shore Drive, Chicago, IL, 60605 USA. E-mail: mattf{at}uchicago.edu.

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