Molecular studies reveal highly ordered geographic patterns in plant and animal distributions. The tropics illustrate these patterns of community immobilism leading to allopatric differentiation, as well as other patterns of mobilism, range expansion, and overlap of taxa. Integrating Earth history and biogeography, <i>Molecular Panbiogeography of the Tropics</i> is an alternative view of distributional history in which groups are older than suggested by fossils and fossil-calibrated...
