Round ebonyshell
The round ebonyshell ("Reginaia rotulata") is a species of freshwater mussel, an aquatic bivalve mollusk. This species is native United States, where it is endemic to a small stretch of the Conecuh River in Alabama and Florida. It has one of the most restricted ranges of any North American freshwater mussel. It is threatened by habitat loss and pollution. In 2012 it was added to the Endangered Species List. The population count is unknown as of now. This genus was separated from "Fusconaia" in 2012 based on genetic evidence.