FIGURE 1 in Marine and freshwater fishes of Alabama: a revised checklist and discussion of taxonomic issues

FIGURE 1. Map of the study area. Boundaries of Alabama and neighboring states are shown (thin black and gray lines; names in bold inside white boxes) along with some major physiographic elements, including the Fall Line (thick red line), major river courses (blue lines), and the outline of the Mobile River Basin (light gray shading). Tick marks along figure margins are 1- degree graticules. The inset map shows an overview of the study area in the context of Central–Eastern North America and the Gulf of Mexico as a whole, and Alabama is shaded black in the main map and inset.