title: Pleurobema troschelianum
text: # Pleurobema troschelianum
  
  Pleurobema troschelianum, the Alabama clubshell, was a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
  
  This species was endemic to the United States. It is now extinct.
  
  