The Recently Extinct Plants and Animals Database


Scientific Name
Alasmidonta wrightiana
Species Authority
(Walker, 1901)
Common Name
Ochlockonee arcmussel
Ochlockonee River, Florida, USA
Last Record
1931 (NatureServe, 2014)
IUCN status
TSE forum thread
Only known from 15 specimens.

[b]Holotype:[/b] MZUM 74938
Reports of this species from Georgia (Walker, 1901; Athearn, 1998) are likely in error (NatureServe, 2014).
[b]Species Bibliography:[/b]

Athearn, H.D. 1998. Additional records and notes on the unionid fauna of the Gulf Drainage of Alabama, Georgia, and Florida. Occasional Papers on Mollusks, 5(76): 465-467.

Bogan, A. E (2000). Alasmidonta wrightiana. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. ( Downloaded on 07 July 2011.

Clarke, A. H. (1981). The tribe Alasmidontini (Unionidae: Anodontinae), Part I: Pegias, Alasmidonta, and Arcidens. Smithsonian Contributions to Zoology 326: 1-101.

Clench, W.J. and R.D. Turner. 1956. Freshwater mollusks of Alabama, Georgia, and Florida from the Escambia to the Suwanee River. Bulletin of the Florida State Museum Biological Sciences, 1(3): 97-239.

Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). [url=]Measuring the Sixth Extinction: what do mollusks tell us?[/url] The Nautilus 131(1): 3-41.

Johnson, R.I. 1967. Additions to the Unionid fauna of the Gulf Drainage of Alabama, Georgia and Florida (Mollusca: Bivalvia). Breviora, 270: 1-21.

NatureServe. (2014). NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available (Accessed: January 27, 2015).

Régnier, Claire, Fontaine, Benoît and Bouchet, Philippe. (2009). [url=]Not Knowing, Not Recording, Not Listing: Numerous Unnoticed Mollusk Extinctions[/url]. Conservation Biology 23(5): 1214-1221.

Turgeon, D.D., J.F. Quinn, Jr., A.E. Bogan, E.V. Coan, F.G. Hochberg, W.G. Lyons, P.M. Mikkelsen, R.J. Neves, C.F.E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F.G. Thompson, M. Vecchione, and J.D. Williams. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland: 526 pp.

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). [url=]A revised list of the freshwater mussels (Mollusca: Bivalvia: Unionida) of the United States and Canada[/url]. Freshwater Mollusk Biology and Conservation 20: 33-58.