Potamilus is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.
Species Species within the genus Potamilus include: Potamilus alatus (pink heelsplitter) Potamilus amphichaenus (Texas heelsplitter) Potamilus capax (fat pocketbook pearly mussel) Potamilus inflatus (inflated heelsplitter) Potamilus metnecktayi (Salina mucket) Potamilus ohiensis (pink papershell) Potamilus purpuratus (bleufer)
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