Global distribution and overlap of fiddler crabs

These data come from a GIS study of geographic ranges of fiddler crabs throughout the world, analyzed in 2019. They consist of (1).shp and related files usable as GIS source material in the ESRI data software system; (2) range length data for all species studied in km of coastline; (3) centroid data for all species, given as latitude and longitude; (4) Overlaps of all species, given as number of species overlapped within a biogeographic zone (Indo-West Pacific IWP, Eastern Pacific EPAC, and Western Atlantic WATL.