Amphibians of the World (click maps to enlarge)
Maps of amphibian diversity include the total species richness, major taxonomic Orders (Anura, Caudata, Gymnophiona), threatened species, and small-ranged species. Species considered small-ranged are those with a geographic range size smaller than the global median (i.e., the 50% of species with the smallest ranges). Maps are based on data from the IUCN, July 2013 update.
All maps were generated at a spatial resolution of 10×10 km and use the Eckert IV equal-area projection. Maps represent native, extant species only. Tables of the amphibian species included are available for download here.
A zip file with higher resolution jpegs of the above maps can be downloaded here.
Earlier versions of the amphibian maps appeared in the publications listed below, which should be cited when using the data.
Jenkins, CN, SL Pimm, LN Joppa (2013) Global Patterns of Terrestrial Vertebrate Diversity and Conservation. PNAS 110(28): E2602-E2610. doi: 10.1073/pnas.1302251110 (PDF)
Pimm, SL, CN Jenkins, R Abell, TM Brooks, JL Gittleman, LN Joppa, PH Raven, CM Roberts, JO Sexton (2014) The biodiversity of species and their rates of extinction, distribution, and protection. Science 344(6187): 1246752
Thanks to Luis Mazariegos of The Hummingbird Conservancy for the photo of Andinobates cassidyhorni.