Epioblasma haysiana

Epioblasma haysiana, the acornshell or acorn pearly mussel, was a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. It is now extinct.

Epioblasma haysiana
Conservation status
Extinct  (IUCN 2.3)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Epioblasma
Species:	†E. haysiana
Binomial name
†Epioblasma haysiana (I. Lea, 1834)
Synonyms
Dysnomia haysiana I. Lea, 1834

This species was endemic to the drainages of the Cumberland River and the Tennessee River in the United States. Its natural habitat was riffle beds over gravel and sand. Like all other members of this sensitive genus, its population had severely declined to habitat destruction and pollution. The last remaining individuals were killed in the 1970s due to exposure to domestic sewage.^[2]

References

1. Bogan, A.E.; et al. (Mollusc Specialist Group) (2000). "Epioblasma haysiana". IUCN Red List of Threatened Species. 2000: e.T7872A12859991. doi:10.2305/IUCN.UK.2000.RLTS.T7872A12859991.en. Retrieved 17 November 2021.
2. NatureServe Explorer