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Systematic Biology Advance Access originally published online on August 28, 2009
Systematic Biology 2009 58(5):537-543; doi:10.1093/sysbio/syp053
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© The Author(s) 2009. Published by Oxford University Press, on behalf of the Society of Systematic Biologists. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

A Correction Corrected: Consensus Over the Meaning of Crocodylia and Why It Matters

Christopher A. Brochu1,*, Jonathan R. Wagner2, Stéphane Jouve3, Colin D. Sumrall4 and Llewellyn D. Densmore5

1 Department of Geoscience, University of Iowa, Iowa City, IA 52242, USA
2 Jackson School of Geoscience, University of Texas, Austin, TX 78712, USA
3 Département Histoire de la Terre, Muséum National d'Histoire Naturelle, CNRS UMR 5134, 8 rue Buffon, 75005 Paris, France
4 Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA
5 Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA

* Correspondence to be sent to: Department of Geoscience, University of Iowa, Iowa City, IA 52242, USA; E-mail: chris-brochu@uiowa.edu.

Received September 16, 2008; Revised February 18, 2009; Accepted August 3, 2009
The first 150 words of the full text of this article appear below.

Crown clades are an important nexus of study for paleontologists and neontologists. Associating commonly used names with crown clades—the crown clade convention—draws their meanings closer to the way they are actually used by the majority of scientists. Molecular, physiological, behavioral, and soft-tissue data can usually be unambiguously optimized no deeper than the root of a crown clade, and commonly used names are applied implicitly to the crown group far more often than to larger groups including extinct relatives (Rowe 1988; Bryant 1996; Gauthier and de Queiroz 2001; Laurin 2002; Joyce et al. 2004; de Queiroz 2007).

The crown clade convention is controversial (Lee 1996; Benton 2000; Anderson 2002; Bateman and DiMichele 2003; Sereno 2005). Crown clade membership and diagnosis may differ from those of more inclusive groups historically associated with the same name. Our knowledge of phylogeny . . . [Full Text of this Article]


   STABILITY
 

   TRADITION
 
Priority

   CONSENSUS
 
Consensus and Common Use
Current Consensus

   WHY IT MATTERS
 
Communication and Universality of Meaning
Optimization, Prediction, and Bracketing

   CONCLUSIONS
 

   SUPPLEMENTARY MATERIAL
 

   FUNDING
 

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