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Integrative and Comparative Biology Advance Access originally published online on July 14, 2006
Integrative and Comparative Biology 2006 46(4):481-496; doi:10.1093/icb/icj057
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© The Author 2006. Published by Oxford University Press on behalf of The Society for Integrative and Comparative Biology. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Polychaete chaetae: Function, fossils, and phylogeny

Rachel A. Merz1,* and Sarah A. Woodin{dagger}
* Department of Biology, Swarthmore College Swarthmore, PA 19081, USA
{dagger} Marine Science Program and Department of Biological Sciences, University of South Carolina Columbia, SC 29208, USA

Correspondence: 1E-mail: rmerz1{at}swarthmore.edu

In this article we review the phylogenetic distribution of major chaetal types within the Polychaeta, discuss what has been demonstrated about chaetal function in modern worms, and examine what is known about the evolution of chaete through the fossil record. We conclude with specific cautions about how chaetae are treated in phylogenetic analyses and make suggestions about how they could be used to provide a stronger phylogenetic signal.


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