Pyganodon

Pyganodon is a genus of freshwater mussels, aquatic bivalve mollusks in the subfamily Unioninae of the family Unionidae, the river mussels.

==Species within the genus Pyganodon== Pyganodon cataracta (Say, 1817) Pyganodon fragilis (Lamarck, 1819) Pyganodon gibbosa (Say, 1824) Pyganodon grandis (Say, 1829) Pyganodon lacustris (I. Lea, 1857) Synonyms: Pyganodon implicata (Say, 1829): synonym of Utterbackiana implicata (Say, 1829) Pyganodon lugubris (Say, 1829): synonym of Pyganodon grandis (Say, 1829) Pyganodon marginata (Say, 1817): synonym of Pyganodon cataracta (Say, 1817) Pyganodon simpsonaia (I. Lea, 1861): synonym of Pyganodon grandis (Say, 1829) Pyganodon simpsoniana (I. Lea, 1861): synonym of Pyganodon grandis (Say, 1829)