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Campeloma is a genus freshwater snails that has existed from late Cretaceous to today in North America.

Description[]

Shells-of-the-viviparid-species-studied-A-Lioplax-subcarinata-B-Campeloma-decisum-C

Shells of the viviparid species studied. A. Lioplax subcarinata B. Campeloma decisum. Credit: Researchgate

They are relatively common in unpolluted rivers in the eastern United States and southeastern Canada.

References[]

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