Rank MethodExpertise without calculation
Review Date2011-11-29
Change Date1996-09-23
Edition Date2011-11-29
Edition AuthorsHammerson, G.
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Range Extent CommentsRange includes North American Atlantic and Gulf Coastal Plain drainages, below the Fall Line, from Cape Fear River, North Carolina, south to northern edge of Everglades in southern Florida, and west to Mobile Bay, Alabama (Page and Burr 2011).