Figure 1.

Heterandria formosa modern, native geographical distribution and collection sites. Sites (dots) correspond to exact localities and sample sizes in Table 1. Brackets indicate regional groups discussed in the text and used in analyses (WCP, Western Coastal Plain; FL, Florida; ACP, Atlantic Coastal Plain). Upper left inset shows a close-up of Apalachicola River/Bay and Apalachee Bay zones and hydrography. Rivers are blue lines; predicted river paths to the Pleistocene LGM coastline (dotted line) are given based on GIS-based bathymetric modeling at -110 m (provided by P. J. Unmack).

Bagley et al. BMC Evolutionary Biology 2013 13:223   doi:10.1186/1471-2148-13-223
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