The link to the supplementary material for Stuart-Fox and Owens (2003), was inadvertently ommitted from the article. The link is reproduced below.
The following material is available from http://www.blackwellpublishing.com/products/journals/suppmat/jeb848/jeb848sm/htm
Appendix A1. Sources used to compile database on morphology, life-history, ecology and distribution of agamid lizards.
Appendix A2. Museum specimens examined and morphometric measurements (mm).
Appendix A3. Data used for comparative analysis of correlates of species richness.
We apologize for this error.