Pleurobema hanleyianum (Lea, 1852)
Georgia pigtoe
Taxonomy & Nomenclature
Synonyms: Unio hanleyianus I. Lea, 1852; Margaron (Unio) hanleyianus (I. Lea, 1852); Pleurobema (Pleurobema) hanleyiana (I. Lea, 1852); Pleurobema hanleyanum (I. Lea, 1852); Pleurobema aldrichianum Goodrich, 1931
Conservation Status
Rediscovered (USFWS, 2003; Campbell et al., 2008:715; Cummings & Cordeiro, 2012)
IUCN RedList status: Critically Endangered
Still listed as Extinct by (Régnier et al., 2009; Cowie et al., 2017)
Distribution & Habitat
Coosa River, southeastern USA
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Lea, Isaac. (1852). Descriptions of new species of the family Unionidae. Transactions of the American Philosophical Society (NS) 10(2): 253-294, plates 12-29 [1 June 1852, teste Scudder (1885: 57)
Other references:
Campbell, D. C., Johnson, P. D., Williams, J. D., Rindsberg, A. K., Serb, J. M., Small, K. K. and Lydeard, C. (2008). Identification of 'extinct' freshwater mussel species using DNA barcoding. Mol Ecol Resour. 8(4): 711-724.
Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.
Cummings, Kevin S. and Cordeiro, J. (2012). Pleurobema hanleyianum. The IUCN Red List of Threatened Species 2012: e.T17685A1450114. https://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T17685A1450114.en. Downloaded on 24 May 2016.
Graf, Daniel L. and Cummings, Kevin S. (2021). A ‘big data’ approach to global freshwater mussel diversity (Bivalvia: Unionoida), with an updated checklist of genera and species. Journal of Molluscan Studies 87(1): eyaa034 (36 pp.). https://doi.org/10.1093/mollus/eyaa034
MolluscaBase eds. (2025). MolluscaBase. Pleurobema hanleyianum (I. Lea, 1852). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=857364 on 2025-07-06
Régnier, Claire, Fontaine, Benoît and Bouchet, Philippe. (2009). Not Knowing, Not Recording, Not Listing: Numerous Unnoticed Mollusk Extinctions. Conservation Biology 23(5): 1214-1221. https://doi.org/10.1111/j.1523-1739.2009.01245.x [Appendix S1-S2]
USFWS (U. S. Fish and Wildlife Service). (2001). Endangered and threatened wildlife and plants: Review of plant and animal species that are candidates or proposed for listing as endangered or threatened, annual notice of findings on recycled petitions, and annual description of progress on listing actions; proposed rule. Federal Register 66: 54808-54832.
USFWS (U. S. Fish and Wildlife Service). (2003). Candidate assessment and listing priority assignment form- Pleurobema chattanoogaense, Pleurobema hanleyanum, Pleurobema troshelianum. U.S. Fish and Wildlife Service (USFWS), Jacksonville, Mississippi.
Williams, James D., Bogan, Arthur E., Butler, Robert S., Cummings, Kevin S., Garner, Jeffrey T., Harris, John L., Johnson, Nathan A. and Watters, G. Thomas. (2017). A revised list of the freshwater mussels (Mollusca: Bivalvia: Unionida) of the United States and Canada. Freshwater Mollusk Biology and Conservation 20: 33-58.
Williams, James D., Bogan, Arthur E. and Garner, Jeffrey T. (2008). Freshwater mussels of Alabama and the Mobile Basin in Georgia, Mississippi and Tennessee. Tuscaloosa, Alabama: University of Alabama Press. xv + 908 pp.
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