Actinonaias ligamentina (Lamarck, 1819)
Animalia | Mollusca | Bivalvia | Unionida | Unionidae | Actinonaias | Actinonaias ligamentina
shoal in muddy sand under grasses floating over the shoal
4 mi E of Sullivan, Meramec River, Meramec State Park, a few hundred ft. above S