The Altamaha arcmussel (''Alasmidonta arcula'') is a species of freshwater

mussel Mussel () is the common name used for members of several families of bivalve molluscs, from saltwater and Freshwater bivalve, freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other ...

, an aquatic

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

in the family Unionidae. It is an endangered species.

Distribution

This species is endemic to the United States.

Habitat

This mussel lives in rivers.

Conservation status

This species is threatened by habitat loss.

References

Endemic molluscs of the United States Alasmidonta Bivalves described in 1838 Taxonomy articles created by Polbot Taxa named by Isaac Lea {{Unionidae-stub