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Page last updated
9 August
2018

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The Freshwater Mussels (Unionoida) of the World
(and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the search fields. Either way, you win!

Taxa known only as fossils are highlighted in gray. Those without representatives in fresh waters are highlighted in gold.

 

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Bivalvia | Unionoida
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Unionidae: genera

*Actinonaias Fischer & Crosse, 1894
4 generic synonyms | 10 species
Distribution: Neotropical.
*Aculamprotula Wu et al., 1999
2 generic synonyms | 8 species
Distribution: Indotropical.
*Acuticosta Simpson, 1900
1 genus-level nomen | 5 species
Distribution: Indotropical.
*Alasmidonta Say, 1818
25 generic synonyms | 12 species
Distribution: Nearctic.
*Amblema Rafinesque, 1820
4 generic synonyms | 12 species
Distribution: Nearctic.
*Anemina Haas, 1969
5 generic synonyms | 6 species
Distribution: Palearctic Indotropical.
*Anodonta Lamarck, 1799
101 generic synonyms | 21 species
Distribution: Nearctic Neotropical Palearctic.
*Anodontoides F.C. Baker, 1898
3 generic synonyms | 2 species
Distribution: Nearctic.
Archiparreysia Modell, 1964 [fossil species only]
1 genus-level nomen | 1 species
*Arcidens Simpson, 1900
2 generic synonyms | 3 species
Distribution: Nearctic.
*Arcidopsis Simpson, 1900
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Arconaia Conrad, 1865
2 generic synonyms | 1 species
Distribution: Indotropical.
*Arotonaias Martens, 1900
3 generic synonyms | 3 species
Distribution: Neotropical.
Baicalinaia Starobogatov, 1970 [fossil species only]
1 genus-level nomen | 1 species
*Barynaias Fischer & Crosse, 1894
1 genus-level nomen | 5 species
Distribution: Neotropical.
*Bineurus Simpson, 1900
1 genus-level nomen | 5 species
Distribution: Indotropical.
*Brazzaea Bourguignat, 1885
3 generic synonyms | 1 species
Distribution: Afrotropical.
*Cambarunio Watters, 2018
1 genus-level nomen | 7 species
Distribution: Nearctic.
*Caudiculatus Simpson, 1900
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Chamberlainia Simpson, 1900
2 generic synonyms | 1 species
Distribution: Indotropical.
*Coelatura Conrad, 1853
19 generic synonyms | 23 species
Distribution: Afrotropical.
Comptio Cai & Liu, 1978 [fossil species only]
0 generic synonyms | 2 species
*Contradens Haas, 1911
7 generic synonyms | 7 species
Distribution: Indotropical.
Costanaia MacNeil, 1935 [fossil species only]
1 genus-level nomen | 1 species
*Cristaria Schumacher, 1817
23 generic synonyms | 4 species
Distribution: Palearctic Indotropical.
*Ctenodesma Simpson, 1900
3 generic synonyms | 2 species
Distribution: Indotropical.
*Cuneopsis Simpson, 1900
3 generic synonyms | 7 species
Distribution: Indotropical.
*Cyclonaias Ortmann & Walker, 1922
4 generic synonyms | 16 species
Distribution: Nearctic.
*Cyprogenia Agassiz, 1852
2 generic synonyms | 2 species
Distribution: Nearctic.
*Cyrtonaias Fischer & Crosse, 1894
3 generic synonyms | 6 species
Distribution: Nearctic Neotropical.
*Delphinonaias Fischer & Crosse, 1894
3 generic synonyms | 4 species
Distribution: Neotropical.
Dentaspatharia Modell, 1964 [fossil species only]
1 genus-level nomen | 1 species
*Diaurora Cockerell, 1903
2 generic synonyms | 1 species
Distribution: Indotropical.
*Discomya Simpson, 1900
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Disconaias Fischer & Crosse, 1894
2 generic synonyms | 6 species
Distribution: Nearctic Neotropical.
*Dromus Simpson, 1900
3 generic synonyms | 1 species
Distribution: Nearctic.
Ebersininaia Starobogatov, 1970 [fossil species only]
1 genus-level nomen | 1 species
*Ellipsaria Rafinesque, 1820
3 generic synonyms | 1 species
Distribution: Nearctic.
*Elliptio Rafinesque, 1819
8 generic synonyms | 42 species
Distribution: Nearctic.
*Elliptoideus Frierson, 1927
2 generic synonyms | 1 species
Distribution: Nearctic.
*Elongaria Haas, 1911
2 generic synonyms | 2 species
Distribution: Indotropical.
*Ensidens Frierson, 1911
1 genus-level nomen | 2 species
Distribution: Indotropical.
Eocuneopsis Guo, 1985 [fossil species only]
2 generic synonyms | 4 species
Eolamprotula Gu [Ku], 1962 [fossil species only]
1 genus-level nomen | 4 species
Eonaias Marshall, 1929 [fossil species only]
1 genus-level nomen | 1 species
*Epioblasma Rafinesque, 1831
15 generic synonyms | 29 species
Distribution: Nearctic.
*Eurynia Rafinesque, 1820
6 generic synonyms | 1 species
Distribution: Nearctic.
*Friersonia Ortmann, 1912
1 genus-level nomen | 1 species
Distribution: Neotropical.
*Fusconaia Simpson, 1900
8 generic synonyms | 16 species
Distribution: Nearctic.
Gautieraia Van Damme & Pickford, 2010 [fossil species only]
1 genus-level nomen | 1 species
*Germainaia Graf & Cummings, 2009
1 genus-level nomen | 1 species
Distribution: Afrotropical.
*Glebula Conrad, 1853
1 genus-level nomen | 1 species
Distribution: Nearctic.
*Gonidea Conrad, 1857
2 generic synonyms | 2 species
Distribution: Nearctic.
Grafunio Van Damme & Pickford, 2010 [fossil species only]
1 genus-level nomen | 1 species
*Grandidieria Bourguignat, 1885
3 generic synonyms | 1 species
Distribution: Afrotropical.
*Haasodonta McMichael, 1956
1 genus-level nomen | 2 species
Distribution: Australasian.
Hadrodon Yen, 1952 [fossil species only]
1 genus-level nomen | 3 species
*Hamiota Roe & Hartfield, 2005
1 genus-level nomen | 4 species
Distribution: Nearctic.
*Harmandia Rochebrune, 1881
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Hemistena Rafinesque, 1820
5 generic synonyms | 1 species
Distribution: Nearctic.
*Hyriopsis Conrad, 1853
3 generic synonyms | 7 species
Distribution: Palearctic Indotropical.
*Indochinella Bolotov et al., 2018
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Inversidens Haas, 1911
4 generic synonyms | 2 species
Distribution: Palearctic Indotropical.
*Inversiunio Habe, 1991
2 generic synonyms | 4 species
Distribution: Palearctic.
*Lamellidens Simpson, 1900
3 generic synonyms | 13 species
Distribution: Indotropical.
*Lamprotula Simpson, 1900
8 generic synonyms | 20 species
Distribution: Palearctic Indotropical.
*Lampsilis Rafinesque, 1820
6 generic synonyms | 32 species
Distribution: Nearctic.
*Lanceolaria Conrad, 1853
6 generic synonyms | 12 species
Distribution: Palearctic Indotropical.
*Lasmigona Rafinesque, 1831
18 generic synonyms | 8 species
Distribution: Nearctic.
*Leaunio Watters, 2018
1 genus-level nomen | 5 species
Distribution: Nearctic.
*Leguminaia Conrad, 1865
4 generic synonyms | 2 species
Distribution: Palearctic.
*Lemiox Rafinesque, 1831
2 generic synonyms | 2 species
Distribution: Nearctic.
*Lepidodesma Simpson, 1896
1 genus-level nomen | 2 species
Distribution: Indotropical.
Leptanodonta Wenz, 1927 [fossil species only]
2 generic synonyms | 2 species
*Leptodea Rafinesque, 1820
6 generic synonyms | 4 species
Distribution: Nearctic.
*Ligumia Swainson, 1840
4 generic synonyms | 9 species
Distribution: Nearctic.
*Martensnaias Frierson, 1927
2 generic synonyms | 1 species
Distribution: Neotropical.
*Medionidus Simpson, 1900
2 generic synonyms | 7 species
Distribution: Nearctic.
*Megalonaias Utterback, 1915
2 generic synonyms | 2 species
Distribution: Nearctic Neotropical.
*Microcondylaea Vest, 1866
4 generic synonyms | 1 species
Distribution: Palearctic.
*Micronaias Simpson, 1900
1 genus-level nomen | 3 species
Distribution: Neotropical.
*Modellnaia Brandt, 1974
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Monodontina Conrad, 1853
2 generic synonyms | 4 species
Distribution: Indotropical.
*Nephritica Frierson, 1927
1 genus-level nomen | 2 species
Distribution: Neotropical.
*Nephronaias Fischer & Crosse, 1894
8 generic synonyms | 24 species
Distribution: Neotropical.
*Nitia Pallary, 1924
1 genus-level nomen | 5 species
Distribution: Afrotropical.
Nkondonaia Van Damme & Pickford, 2010 [fossil species only]
1 genus-level nomen | 1 species
*Nodularia Conrad, 1853
6 generic synonyms | 8 species
Distribution: Palearctic Indotropical.
*Nyassunio Haas, 1936
2 generic synonyms | 2 species
Distribution: Afrotropical.
*Obliquaria Rafinesque, 1820
2 generic synonyms | 1 species
Distribution: Nearctic.
*Obovaria Rafinesque, 1819
5 generic synonyms | 7 species
Distribution: Nearctic.
Obwerukunio Van Damme & Pickford, 2010 [fossil species only]
1 genus-level nomen | 1 species
*Ortmanniana Frierson, 1927
1 genus-level nomen | 2 species
Distribution: Nearctic.
*Pachynaias Fischer & Crosse, 1894
1 genus-level nomen | 2 species
Distribution: Neotropical.
*Paetulunio Watters, 2018
2 generic synonyms | 1 species
Distribution: Nearctic.
Palindonaia Modell, 1950 [fossil species only]
1 genus-level nomen | 1 species
Paranodonta Kobayashi & Suzuki, 1936 [fossil species only]
1 genus-level nomen | 1 species
*Parreysia Conrad, 1853
8 generic synonyms | 24 species
Distribution: Indotropical.
*Parvaspina Perkins et al., 2017
1 genus-level nomen | 2 species
Distribution: Nearctic.
*Pegias Simpson, 1900
2 generic synonyms | 1 species
Distribution: Nearctic.
*Physunio Simpson, 1900
3 generic synonyms | 6 species
Distribution: Indotropical.
*Pilsbryoconcha Simpson, 1900
2 generic synonyms | 5 species
Distribution: Indotropical.
*Plectomerus Conrad, 1853
4 generic synonyms | 1 species
Distribution: Nearctic.
Plesielliptio Russell, 1934 [fossil species only]
2 generic synonyms | 10 species
*Plethobasus Simpson, 1900
1 genus-level nomen | 5 species
Distribution: Nearctic.
*Pletholophus Simpson, 1900
2 generic synonyms | 1 species
Distribution: Indotropical.
*Pleurobema Rafinesque, 1819
11 generic synonyms | 31 species
Distribution: Nearctic.
*Pleuronaia Frierson, 1927
3 generic synonyms | 4 species
Distribution: Nearctic.
Pliconaias Marshall, 1929 [fossil species only]
1 genus-level nomen | 1 species
*Popenaias Frierson, 1927
2 generic synonyms | 3 species
Distribution: Nearctic Neotropical.
*Potamilus Rafinesque, 1818
19 generic synonyms | 9 species
Distribution: Nearctic Neotropical.
*Potomida Swainson, 1840
21 generic synonyms | 13 species
Distribution: Palearctic.
*Pressidens Haas, 1910
2 generic synonyms | 3 species
Distribution: Indotropical.
*Prisodontopsis Tomlin, 1928
5 generic synonyms | 2 species
Distribution: Afrotropical.
*Prohyriopsis Haas, 1914
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Pronodularia Starobogatov, 1970
2 generic synonyms | 2 species
Distribution: Palearctic.
Proparreysia Wanner, 1921 [fossil species only]
1 genus-level nomen | 12 species
Propotomida Modell, 1964 [fossil species only]
2 generic synonyms | 1 species
Protamblema Modell, 1957 [fossil species only]
3 generic synonyms | 1 species
Protelliptio Russell, 1934 [fossil species only]
1 genus-level nomen | 3 species
Protopleurobema Delvene & Araujo, 2009 [fossil species only]
1 genus-level nomen | 1 species
*Protunio Haas, 1912
1 genus-level nomen | 1 species
Distribution: Indotropical.
*Pseudanodonta Bourguignat, 1876
12 generic synonyms | 3 species
Distribution: Palearctic.
*Pseudobaphia Simpson, 1900
1 genus-level nomen | 3 species
Distribution: Indotropical.
Pseudobovaria Adam, 1957 [fossil species only]
1 genus-level nomen | 3 species
Pseudodiplodon Adam, 1957 [fossil species only]
1 genus-level nomen | 2 species
*Pseudodon Gould, 1844
10 generic synonyms | 16 species
Distribution: Palearctic Indotropical.
*Pseudodontoideus Frierson, 1927
3 generic synonyms | 2 species
Distribution: Nearctic.
*Pseudodontopsis Kobelt, 1913
2 generic synonyms | 1 species
Distribution: Palearctic.
*Pseudospatha Simpson, 1900
2 generic synonyms | 1 species
Distribution: Afrotropical.
Psilounio Guo, 1985 [fossil species only]
0 generic synonyms | 21 species
*Psoronaias Fischer & Crosse, 1894
1 genus-level nomen | 8 species
Distribution: Neotropical.
*Psorula Haas, 1930
1 genus-level nomen | 7 species
Distribution: Neotropical.
*Ptychobranchus Simpson, 1900
3 generic synonyms | 8 species
Distribution: Nearctic.
Ptychorhynchoideus Modell, 1931 [fossil species only]
2 generic synonyms | 1 species
*Ptychorhynchus Simpson, 1900
2 generic synonyms | 5 species
Distribution: Indotropical.
*Pyganodon Fischer & Crosse, 1894
3 generic synonyms | 5 species
Distribution: Nearctic Neotropical.
Qiyangia Chen & Xu, 1980 [fossil species only]
0 generic synonyms | 2 species
*Quadrula Rafinesque, 1820
4 generic synonyms | 9 species
Distribution: Nearctic.
*Radiatula Simpson, 1900
3 generic synonyms | 19 species
Distribution: Indotropical.
*Rectidens Simpson, 1900
1 genus-level nomen | 2 species
Distribution: Indotropical.
*Reginaia Campbell & Lydeard, 2012
1 genus-level nomen | 3 species
Distribution: Nearctic.
*Reticulatus Frierson, 1927
1 genus-level nomen | 2 species
Distribution: Neotropical.
Rhabdotophorus Russell, 1935 [fossil species only]
1 genus-level nomen | 3 species
*Rhombuniopsis Haas, 1920
1 genus-level nomen | 3 species
Distribution: Indotropical.
Rugunio Starobogatov, 1970 [fossil species only]
1 genus-level nomen | 1 species
*Sagittunio Watters, 2018
1 genus-level nomen | 4 species
Distribution: Nearctic.
Saharella Mongin, 1963 [fossil species only]
2 generic synonyms | 1 species
*Scabies Haas, 1911
1 genus-level nomen | 7 species
Distribution: Indotropical.
*Schepmania Haas, 1910
2 generic synonyms | 2 species
Distribution: Indotropical.
*Schistodesmus Simpson, 1900
2 generic synonyms | 2 species
Distribution: Indotropical.
*Simpsonaias Frierson, 1914
3 generic synonyms | 1 species
Distribution: Nearctic.
*Simpsonella Cockerell, 1903
4 generic synonyms | 2 species
Distribution: Indotropical.
*Sinanodonta Modell, 1945
8 generic synonyms | 10 species
Distribution: Nearctic Neotropical Palearctic Indotropical.
*Sinohyriopsis Starobogatov, 1970
3 generic synonyms | 2 species
Distribution: Palearctic Indotropical.
Sinzowinaia Starobogatov, 1970 [fossil species only]
1 genus-level nomen | 1 species
*Solenaia Conrad, 1869
2 generic synonyms | 8 species
Distribution: Indotropical.
*Sphenonaias Fischer & Crosse, 1894
1 genus-level nomen | 7 species
Distribution: Nearctic Neotropical.
*Strophitus Rafinesque, 1820
8 generic synonyms | 7 species
Distribution: Nearctic.
Sulcatapex Yen, 1946 [fossil species only]
1 genus-level nomen | 1 species
Sulcatula Leroy, 1940 [fossil species only]
1 genus-level nomen | 1 species
Sulcopotomida Starobogatov, 1970 [fossil species only]
1 genus-level nomen | 1 species
Tamesnella Mongin, 1963 [fossil species only]
1 genus-level nomen | 2 species
Teruella Mongin, 1965 [fossil species only]
1 genus-level nomen | 1 species
*Theliderma Swainson, 1840
4 generic synonyms | 5 species
Distribution: Nearctic.
*Toxolasma Rafinesque, 1831
4 generic synonyms | 7 species
Distribution: Nearctic.
*Trapezidens Bolotov et al., 2017
1 genus-level nomen | 3 species
Distribution: Indotropical.
*Trapezoideus Simpson, 1900
2 generic synonyms | 9 species
Distribution: Indotropical.
*Tritogonia Agassiz, 1852
3 generic synonyms | 2 species
Distribution: Nearctic.
*Truncilla Rafinesque, 1819
4 generic synonyms | 4 species
Distribution: Nearctic.
*Unio Retzius, 1788
112 generic synonyms | 28 species
Distribution: Afrotropical Palearctic.
*Uniomerus Conrad, 1853
3 generic synonyms | 5 species
Distribution: Nearctic.
Unionelloides Gu [Ku], 1962 [fossil species only]
5 generic synonyms | 8 species
*Unionetta Haas, 1955
3 generic synonyms | 1 species
Distribution: Indotropical.
*Utterbackia F.C. Baker, 1927
2 generic synonyms | 3 species
Distribution: Nearctic.
*Utterbackiana Frierson, 1927
3 generic synonyms | 5 species
Distribution: Nearctic.
*Venustaconcha Frierson, 1927
2 generic synonyms | 5 species
Distribution: Nearctic.
Vetulonaia Branson, 1935 [fossil species only]
2 generic synonyms | 3 species
*Villosa Frierson, 1927
1 genus-level nomen | 4 species
Distribution: Nearctic.
 
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