Strong mitochondrial DNA support for a Cretaceous origin of modern avian lineages
1 University of Michigan Museum of Zoology and Department of Ecology and Evolutionary Biology, 1109 Geddes Avenue, Ann Arbor, MI 48109-1079, USA
2 Department of Ecology and Evolution, University of Chicago, 1101 East 57th Street, Chicago, IL 60615, USA
3 Centre for Biodiversity Conservation Mexico and Central America, Conservation International, Apdo. 2365-2050 San Pedro, Costa Rica
4 Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA
BMC Biology 2008, 6:6 doi:10.1186/1741-7007-6-6Published: 28 January 2008
Additional file 1:
Supplemental figure S1 Constraint tree. A consensus tree derived from the thick branches only of Figure 27.10 of Cracraft et al.  used as a backbone constraint in RAxML tree searches.
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Additional file 2:
Supplemental table S1 GenBank accession numbers. Accession number information for analyzed sequence data (sequences EU166921–EU167086, EU372666–EU372688, and EU391159 are novel to this study).
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