Alabama Pearlshell Mollusk Survey Form

The Alabama pearlshell (Margaritifera marrianae, Johnson 1983) is a medium sized freshwater mussel known from a few tributaries of the Alabama and Escambia River drainages in southcentral Alabama (Johnson 1983, pp. 299–304; McGregor 2004, p. 40; Williams et al. 2008, pp. 98–99). The pearlshell...