Black mudalia explained

The black mudalia (Elimia melanoides) is a species of freshwater snail in the family Pleuroceridae. It is endemic to the Black Warrior River system of Alabama in the United States. It was thought to be extinct until it was rediscovered during a 1996 survey.^[1]

Notes and References

1. Minton, R. L., et al. (2003). Rediscovery, systematic position, and re-description of "Leptoxis" melanoides (Conrad, 1834) (Mollusca: Gastropoda: Cerithioidea: Pleuroceridae) from the Black Warrior River, Alabama, U.S.A. Proceedings of the Biological Society of Washington 116 531-41.