The shiny pigtoe (''Fusconaia cor'') is a species of

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, biv ...

in the family

Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is at its most dive ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...

. This species appears to be most closely related to ''

Fusconaia cuneolus ''Fusconaia cuneolus'', the fine-rayed pigtoe pearly mussel or fine-rayed pigtoe, is a species of bivalve in the family Unionidae. It is native to Tennessee, Alabama, and Virginia in the United States, in each of which its population has declined ...

''.

References

Molluscs of the United States Fusconaia Bivalves described in 1834 Taxa named by Timothy Abbott Conrad Taxonomy articles created by Polbot ESA endangered species {{Unionidae-stub