Mesodon thyroidus (Say, 1817) White-lip Globe

    Drift associated with major flooding of the Brazos River, Quintana Beach County Park, Freeport, Brazoria County, Texas.  Steve Rosenthal! 24, 25, 27 June, 2016 (21.4 mm.) Digital images by Lori Schroeder. Also see: Mesodon thyroidus (Say, 1817) White-lip Globe