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Reconstructions of the spatial history of the North American vaejovid scorpions Pseudouroctonus reddelli and Pseudouroctonus sprousei based on Bayesian analyses of mitochondrial DNA (solid line) and nuclear internal transcribed spacer region (ITS) data (dashed line). Polygons represent 80% highest posterior density intervals for the spatial location of ancestral populations across four time slices. Abbreviations for sampled localities in Table 3.
