Birdwing pearlymussel

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Birdwing pearlymussel
Lemiox rimosus.jpg
Lemiox rimosus
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionoida
Family: Unionidae
Tribe: Lampsilini
Genus: Lemiox
Species: L. rimosus
Binomial name
Lemiox rimosus
Rafinesque, 1831

Conradilla caelata

The birdwing pearlymussel (Lemiox rimosus) is a rare species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve is native to Tennessee and Virginia in the United States. Its range has declined over 90%.[2] It is a federally listed endangered species of the United States.

This mussel remains in three rivers in Tennessee and Virginia, the Duck, Clinch, and Powell Rivers, having been extirpated from many more. It is now extinct in the state of Alabama.[2]

Failed efforts to transplant the birdwing pearly mussel and the Cumberland monkeyface pearly mussel, also endangered, to local streams brought an end to construction on the half-completed and long-contested Columbia Dam on the Duck River in 1983.[3]


  1. ^ Cummings, K. & Cordeiro, J. (2012). "Lemiox rimosus". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 31 March 2014. 
  2. ^ a b Lemiox rimosus. The Nature Conservancy.
  3. ^ Aldrich, Marta (10 October 1999). "$83 Million Later, Unfinished Dam Being Dismantled". Seattle Times. Columbia, TN. Retrieved 13 September 2016.