Potamilus capax explained

Potamilus capax, the fat pocketbook pearly mussel or fat pocketbook, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.

External links

• Fish and Wildlife Service http://ecos.fws.gov/docs/life_histories/F00T.html
• EPA: Pesticides Endangered Species Protection Program http://www.epa.gov/espp/arkansas/stfran.htm