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Toxolasma cylindrellus
Conservation status
Critically Endangered  (IUCN 3.1)
CITES Appendix I (CITES)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Toxolasma
Species:	T. cylindrellus
Binomial name
Toxolasma cylindrellus (Lea, 1868)
Synonyms
Carunculina cylindrellus (Lea, 1868)

Toxolasma cylindrellus, the pale lilliput naiad, pale lilliput pearly mussel, or pale lilliput, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. Its host is the northern studfish.

Distribution

This species is endemic to the United States. It has experienced a great range reduction and is currently found only in the Paint Rock River drainage in northern Alabama and southeastern Tennessee. The most recent surveys failed to find this species in the Tennessee portion of the drainage.

Conservation

The pale lilliput has been listed as endangered under the Endangered Species Act of 1973 since 1976.

References

1. Cummings, K.; Cordeiro, J. (2012). "Toxolasma cylindrellus". IUCN Red List of Threatened Species. 2012: e.T22013A2781049. doi:10.2305/IUCN.UK.2012.RLTS.T22013A2781049.en. Retrieved 14 November 2021.
2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
3. Ornes, Stephen (1 August 2020). "The Golden Riffleshell's Appalachian Road Trip". Science News. 198 (2): 23–27. Retrieved 4 August 2020.
4. NatureServe (3 March 2023). "Toxolasma cylindrellus". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 6 April 2023.
5. "Pale lilliput (pearlymussel) (Toxolasma cylindrellus)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 19 April 2023.
6. 41 FR 24062

External links

• Media related to Toxolasma cylindrellus at Wikimedia Commons

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• IUCN Red List critically endangered species
• Endemic molluscs of the United States
• Toxolasma
• Molluscs described in 1868
• ESA endangered species
• Unionidae stubs