sentences:  These two species may have evolutionarily diverged with the formation of the Isthmus of Panama ("c." 3 Ma).The longtail stingray is found along the tropical Pacific coast of the Americas, from central Baja California (though it may occur as far north as San Diego, California) to Colombia, including the Revillagigedo and Galapagos Islands.This species inhabits sandy or muddy flats to a depth of , often near rocky or coral reefs, or in estuaries.