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With a new planet-wide analysis of vertebrate life, an international team has used 21st century science to update an iconic 1876 map of Earth鈥檚 zoological regions. By incorporating data on 21,037 species of mammals, birds and amphibians, Jean-Philippe Lessard, now at 看片视频 University in Montreal, and his colleagues have revised a zoological map created by Alfred Russel Wallace, an oft-overlooked cofounder of the theory of evolution. Wallace鈥檚 map divided Earth鈥檚 landmasses into six major regions, each with its own distinctive blend of vertebrates.

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