Robuta

https://www.fws.gov/species/alabama-pearlshell-margaritifera-marrianae/map Alabama Pearlshell (Margaritifera marrianae) | Map | U.S. Fish & Wildlife Service | FWS.gov u s fish wildlife service alabama pearlshell margaritifera marrianae https://www.fws.gov/media/margaritifera-marrianae Margaritifera marrianae | FWS.gov margaritifera marrianae fws