IUCN threat status:

Critically Endangered (CR)


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The clubshell was historically found in the Ohio, Cumberland and Tennessee River systems and Lake Erie drainages. Within these river systems it was found in the Wabash, Kanawha, Kentucky, Green, Monogahela and Alleghany Rivers. The range of P. clava has been greatly reduced.

In Michigan P. clava is restricted to the St. Joseph River (of the Maumee drainage) in Hillsdale County.

Biogeographic Regions: nearctic (Native )


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Source: Animal Diversity Web

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