1. Dept of Ecology and Evolution; Stony Brook Univ.; Stony Brook NY 11794-5245 USA
2. Dept of Biology; City College and City Univ. of New York; New York NY 10031 USA
3. Laboratorio de Biología Evolutiva de Vertebrados, Depto de Ciencias Biológicas; Univ. de los Andes; Apartado 4976, Bogotá Colombia
4. Cornell Univ.; Dept of Ecology and Evolutionary Biology; E209 Corson Hall, Ithaca NY 14853-2701 USA
5. National Evolutionary Synthesis Center; 2024 W. Main Street Suite A200, Durham NC 27705-4667 USA
6. Univ. of Iowa, Museum of Natural History; Iowa City IA 52242 USA
7. Inst. de Biología, Facultad de Ciencias Exactas y Naturales, Univ. de Antioquia; Medellín Colombia
8. Dept of Ecology and Evolutionary Biology and CU Museum of Natural History; Univ. of Colorado; Boulder CO 80309 USA
9. Museum of Vertebrate Zoology and Dept of Integrative Biology; Univ. of California-Berkeley; Berkeley CA 94720-3160 USA
10. Dept of Biology; Boston Univ.; Boston MA 02215 USA
11. Centre for Tropical Biology and Climate Change Research, School of Marine and Tropical Biology, James Cook Univ.; Townsville QLD 4811 Australia
12. Center for Macroecology, Evolution, and Climate, Dept of Biology; Univ. of Copenhagen; Universitetsparken 15 DK-2100 Copenhagen O Denmark
13. Bell Museum of Natural History and Dept of Fisheries, Wildlife, and Conservation Biology; Univ. of Minnesota; St Paul MN 55108 USA
14. Dept of Ecology and Evolutionary Biology; Univ. of Tennessee; Knoxville TN 37996 USA