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Glebula rotundata, the round pearlshell, is a freshwater mussel, and an aquatic bivalve mollusk in the family Unionidae. As the only species in the genus Glebula, it is unusual among unionoid mussels for its ability to tolerate brackish water.
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species rotundata family genus round pearlshell freshwater brackish water found aquatic bivalve mollusk unionidae arkansas oklahoma mussel unusual among unionoid
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