Epioblasma arcaeformis

Epioblasma arcaeformis, the sugarspoon or arc-form pearly mussel, was a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. No live individuals have been observed since the early 20th century and it is presumed to be extinct.

Epioblasma arcaeformis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Epioblasma
Species:
E. arcaeformis
Binomial name
Epioblasma arcaeformis
(I. Lea, 1831)
Synonyms

Dysnomia arcaeformis I. Lea, 1831

This species was endemic to the drainages of the Cumberland River and the Tennessee River in the United States. Its natural habitat was rocky shoals of medium to large size rivers. Like most other members of its genus, it became extinct due to habitat loss from pollution, impoundment construction, and canalization. The Holston River, Tennessee contained the last known population, which was killed by the construction of Cherokee Dam in 1941.[2]

References
  1. IUCN Redlist
  2. Haag, Wendell; Cicerello, Ron (2016). "A Distributional Atlas of Kentucky Mussels" (PDF). Kentucky State Nature Preserves Commission. Retrieved May 19, 2017.


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