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In the recent geological past, a sizeable region within the Galápagos chain must have experienced rapid, significant changes in its geography as a result of major shifts in local relative sea level periodically connecting and then isolating islands. This might explain striking patterns in the distribution and composition of the archipelago's land fauna. These insights provide a platform for future studies predicting the ages of subpopulation separations, which should correspond to the sea-level rises that followed each of the lows. [Source: Journal of Biogeography]
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