family Unionidae

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	Definition:		[n]  freshwater mussels found worldwide
	Synonyms:		Unionidae
	See Also:		Anodonta, Bivalvia, class Bivalvia, class Lamellibranchia, class Pelecypoda, Dreissena, genus Anodonta, genus Dreissena, genus Unio, Lamellibranchia, mollusk family, Unio