Species Unio abyssinicus von Martens, 1866
Species Unio bruguierianus Bourguignat, 1853
Species Unio caffer F. Krauss, 1848
Species Unio crassus Philipsson, 1788
Species Unio delphinus Spengler, 1793
Species Unio dembeae Reeve, 1865
Species Unio elongatulus C. Pfeiffer, 1825
Species Unio foucauldianus Pallary, 1936
Species Unio gibbus Spengler, 1793
Species Unio indifferens Lindholm, 1932 †
Species Unio ionicus Drouët, 1879
Species Unio kirchbergensis Krauss, 1852 †
Species Unio mancus Lamarck, 1819
Species Unio migliorinii Magrograssi, 1928 †
Species Unio pictorum (Linnaeus, 1758)
Species Unio pseudatavus Bukowski, 1896 †
Species Unio ravoisieri Deshayes, 1848
Species Unio subplanatus Lindholm, 1932 †
Species Unio tigridis Bourguignat, 1852
Species Unio tumidiformis Castro, 1885
Species Unio tumidus Philipsson, 1788

Species Unio delphinus I. Lea, 1840 (taxon inquirendum, invalid, a junior homonym of Unio delphinus Spengler, 1793)
Species Unio shuttleworthi Küster, 1856 (taxon inquirendum)
Species Unio tenuis Gray in Griffith & Pidgeon, 1833 (taxon inquirendum)

Species Unio malgachensis Germain, 1911 (nomen dubium)
Species Unio radula Say, 1829 (nomen dubium)

Species Unio pequottinus Linsley, 1845 (nomen nudum)

Subgenus Unio (Actinonaias) Fischer & Crosse, 1894 accepted as Actinonaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Alasmodon) Sowerby I., 1824 accepted as Alasmidonta Say, 1818 (invalid: unjustified emendation)
Subgenus Unio (Amphinaias) Crosse & P. Fischer, 1894 accepted as Quadrula Rafinesque, 1820
Subgenus Unio (Anodontes) Cuvier, 1817 accepted as Anodontites Bruguière, 1792 (a junior synonym)
Subgenus Unio (Arconaia) accepted as Arconaia Conrad, 1865 accepted as Lanceolaria Conrad, 1853
Subgenus Unio (Arotonaias) von Martens, 1900 accepted as Arotonaias von Martens, 1900 (original rank)
Subgenus Unio (Aximedia) accepted as Pleurobema Rafinesque, 1819
Subgenus Unio (Barynaias) Fischer & Crosse, 1894 accepted as Barynaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Canthyria) Swainson, 1840 accepted as Elliptio Rafinesque, 1819
Subgenus Unio (Coelatura) Conrad, 1853 accepted as Coelatura Conrad, 1853 (original rank)
Subgenus Unio (Cuneopsis) Simpson, 1900 accepted as Cuneopsis Simpson, 1900
Subgenus Unio (Cyrtonaias) Crosse & P. Fischer, 1894 accepted as Cyrtonaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Delphinonaias) Crosse & P. Fischer, 1894 accepted as Delphinonaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Diplodon) Spix, 1827 accepted as Diplodon Spix, 1827 (original rank)
Subgenus Unio (Disconaias) Crosse & P. Fischer, 1894 accepted as Disconaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Elliptio) Rafinesque, 1819 accepted as Elliptio Rafinesque, 1819 (original rank)
Subgenus Unio (Eurynia) Rafinesque, 1819 accepted as Eurynia Rafinesque, 1819 (original rank)
Subgenus Unio (Glebula) Conrad, 1853 accepted as Glebula Conrad, 1853 (original rank)
Subgenus Unio (Grandidieria) Bourguignat, 1885 accepted as Grandidieria Bourguignat, 1885
Subgenus Unio (Heterunio) Lindholm, 1932 † accepted as Heterunio Lindholm, 1932 † (original rank)
Subgenus Unio (Lampsilis) accepted as Lampsilis Rafinesque, 1820
Subgenus Unio (Lanceolaria) Conrad, 1853 accepted as Lanceolaria Conrad, 1853
Subgenus Unio (Lemiox) Rafinesque, 1831 accepted as Lemiox Rafinesque, 1831 (original rank)
Subgenus Unio (Leptodea) Rafinesque, 1820 accepted as Leptodea Rafinesque, 1820 (original rank)
Subgenus Unio (Ligumia) Swainson, 1840 accepted as Ligumia Swainson, 1840 (original rank)
Subgenus Unio (Metaptera) Rafinesque, 1820 accepted as Potamilus Rafinesque, 1818 (a junior synonym)
Subgenus Unio (Microdontia) Tapparone Canefri, 1883 accepted as Microdontia Tapparone Canefri, 1883 (original rank)
Subgenus Unio (Micronaias) Simpson, 1900 accepted as Micronaias Simpson, 1900 (original rank)
Subgenus Unio (Monocondylaea) d'Orbigny, 1835 accepted as Monocondylaea d'Orbigny, 1835 (original rank)
Subgenus Unio (Nephronaias) Crosse & P. Fischer, 1894 accepted as Nephronaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Nodularia) Conrad, 1853 accepted as Nodularia Conrad, 1853 (original rank)
Subgenus Unio (Obovaria) Rafinesque, 1819 accepted as Obovaria Rafinesque, 1819
Subgenus Unio (Pachynaias) Crosse & P. Fischer, 1894 accepted as Pachynaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Parreysia) Conrad, 1853 accepted as Parreysia Conrad, 1853 (original combination)
Subgenus Unio (Pleurobema) Rafinesque, 1819 accepted as Pleurobema Rafinesque, 1819 (original rank)
Subgenus Unio (Psoronaias) Crosse & P. Fischer, 1894 accepted as Psoronaias Crosse & P. Fischer, 1894 (original rank)
Subgenus Unio (Quadrula) Rafinesque, 1820 accepted as Quadrula Rafinesque, 1820
Subgenus Unio (Rhipidodonta) Mörch, 1853 accepted as Rhipidodonta Mörch, 1853 (original rank)
Subgenus Unio (Sayunio) accepted as Hemistena Rafinesque, 1820
Subgenus Unio (Sculptunio) Lindholm, 1932 † accepted as Sculptunio Lindholm, 1932 † (original rank)
Subgenus Unio (Simonaias) Crosse & P. Fischer, 1894 accepted as Nephronaias Crosse & P. Fischer, 1894 (a junior synonym)
Subgenus Unio (Sphenonaias) Crosse & P. Fischer, 1894 accepted as Sphenonaias Crosse & P. Fischer, 1894 (Original rank)
Subgenus Unio (Symphynota) accepted as Potamilus Rafinesque, 1818
Subgenus Unio (Theliderma) Swainson, 1840 accepted as Theliderma Swainson, 1840 (original rank)
Subgenus Unio (Toxolasma) Rafinesque, 1831 accepted as Toxolasma Rafinesque, 1831 (original rank)
Subgenus Unio (Truncilla) Rafinesque, 1819 accepted as Truncilla Rafinesque, 1819 (original rank)
Subgenus Unio (Tuberunio) Lindholm, 1932 † accepted as Tuberunio Lindholm, 1932 † (original rank)
Subgenus Unio (Uniomerus) Conrad, 1853 accepted as Uniomerus Conrad, 1853 (original rank)
Species Unio abacoides Haldeman, 1846 accepted as Dromus dromas (I. Lea, 1834)
Species Unio abacus Haldeman, 1842 accepted as Ptychobranchus fasciolaris (Rafinesque, 1820)
Species Unio abbevillensis I. Lea, 1857 accepted as Elliptio complanata (Lightfoot, 1786)
Species Unio abbreviatus Westerlund, 1897 accepted as Nodularia douglasiae (Gray, 1833) (invalid: junior homonym of Unio abbreviatus de Joannis, 1859)
Species Unio aberrans I. Lea, 1863 accepted as Elliptio complanata (Lightfoot, 1786)
Species Unio aberti Conrad, 1850 accepted as Cyprogenia aberti (Conrad, 1850)
Species Unio ablatus (I. Lea, 1863) accepted as Elliptio icterina (Conrad, 1834) (incorrect original spelling)
Species Unio abruptus Say, 1831 accepted as Lampsilis abrupta (Say, 1831)
Species Unio acrorrhynchus von Martens, 1894 accepted as Lanceolaria acrorrhyncha (von Martens, 1894) (basionym)
Species Unio acuens I. Lea, 1871 accepted as Pleurobema oviforme (Conrad, 1834)
Species Unio acuminatus H. Adams, 1866 accepted as Nitia acuminata (H. Adams, 1866) (basionym)
Species Unio acutissimus I. Lea, 1831 accepted as Medionidus acutissimus (I. Lea, 1831) (original combination)
Species Unio aegyptiacus Cailliaud, 1827 accepted as Coelatura aegyptiaca (Cailliaud, 1827) (original combination)
Species Unio aequatorius Morelet, 1885 accepted as Coelatura gabonensis (Küster, 1862) (junior synonym)
Species Unio aequatus I. Lea, 1857 accepted as Elliptio icterina (Conrad, 1834)
Species Unio aeruginosus Morelet, 1849 accepted as Nephronaias aeruginosa (Morelet, 1849)
Species Unio aesopus Green, 1827 accepted as Plethobasus cyphyus (Rafinesque, 1820)
Species Unio aethiops I. Lea, 1860 accepted as Diplodon aethiops (I. Lea, 1860) (basionym)
Species Unio affinis I. Lea, 1852 accepted as Lampsilis straminea (Conrad, 1834)
Species Unio africanus I. Lea, 1856 accepted as Unio caffer F. Krauss, 1848 (junior synonym)
Species Unio aheneus I. Lea, 1843 accepted as Elliptio ahenea (I. Lea, 1843) (original combination)
Species Unio alabamensis Conrad, 1834 accepted as Potamilus inflatus (I. Lea, 1831)
Species Unio alatus Say, 1817 accepted as Potamilus alatus (Say, 1817)
Species Unio alienigenus Crosse & P. Fischer, 1893 accepted as Cyrtonaias umbrosa (I. Lea, 1856)
Species Unio altilis Conrad, 1834 accepted as Hamiota altilis (Conrad, 1834)
Species Unio altus Conrad, 1854 accepted as Pleurobema altum (Conrad, 1854)
Species Unio amabilis I. Lea, 1865 accepted as Pleurobema pyriforme (I. Lea, 1857)
Species Unio ambiguus Philippi, 1847 accepted as Velesunio ambiguus (Philippi, 1847) (original combination)
Species Unio amoenus I. Lea, 1840 accepted as Villosa iris (I. Lea, 1829) accepted as Cambarunio iris (I. Lea, 1829) (synonym)
Species Unio amplus I. Lea, 1872 accepted as Elliptio complanata (Lightfoot, 1786)
Species Unio ampullaceus I. Lea, 1866 accepted as Diplodon uruguayensis (I. Lea, 1860) (a junior synonym)
Species Unio amygdalum I. Lea, 1843 accepted as Villosa amygdalum (I. Lea, 1843) (original combination)
Species Unio anaticulus I. Lea, 1861 accepted as Pleurobema decisum (I. Lea, 1831)
Species Unio andersonensis I. Lea, 1872 accepted as Fusconaia cor (Conrad, 1834)
Species Unio andersoniana G. Nevill, 1877 accepted as Indonaia andersoniana (G. Nevill, 1877) (original combination)
Species Unio angasi G. B. Sowerby II, 1867 accepted as Velesunio angasi (G. B. Sowerby II, 1867) (original combination)
Species Unio angoniensis Preston, 1910 accepted as Coelatura hypsiprymna (von Martens, 1897) (junior synonym)
Species Unio angustatus I. Lea, 1831 accepted as Elliptio angustata (I. Lea, 1831) (original combination)
Species Unio anodontoides I. Lea, 1831 accepted as Lampsilis teres (Rafinesque, 1820)
Species Unio anthonyi I. Lea, 1861 accepted as Elliptio monroensis (I. Lea, 1843)
Species Unio apicinus I. Lea, 1857 accepted as Villosa lienosa (Conrad, 1834) accepted as Leaunio lienosus lienosus (Conrad, 1834) (synonym)
Species Unio apiculatus Say, 1829 accepted as Quadrula apiculata (Say, 1829)
Species Unio appressus I. Lea, 1871 accepted as Fusconaia cuneolus (I. Lea, 1840)
Species Unio approximus I. Lea, 1845 accepted as Lampsilis hydiana (I. Lea, 1838)
Species Unio aquilus I. Lea, 1857 accepted as Elliptio pullata (I. Lea, 1857)
Species Unio aratus Conrad, 1849 accepted as Elliptoideus sloatianus (I. Lea, 1840)
Species Unio aratus I. Lea, 1843 accepted as Micronaias arata (I. Lea, 1843) (original combination)
Species Unio arcaeformis I. Lea, 1831 accepted as Epioblasma arcaeformis (I. Lea, 1831) (original combination)
Species Unio arctatus Conrad, 1834 accepted as Elliptio arctata (Conrad, 1834)
Species Unio arctior I. Lea, 1838 accepted as Eurynia dilatata (Rafinesque, 1820)
Species Unio arcus Conrad, 1834 accepted as Elliptio arca (Conrad, 1834)
Species Unio argenteus I. Lea, 1841 (unaccepted)
Species Unio arkansasensis I. Lea, 1862 (unaccepted)
Species Unio arquatus Conrad, 1854 (unaccepted)
Species Unio ascia Hanley, 1856 (unaccepted, junior synonym)
Species Unio askewi Marsh, 1896 (unaccepted)
Species Unio asper I. Lea, 1831 (unaccepted)
Species Unio asperatus I. Lea, 1861 (unaccepted)
Species Unio asperrimus I. Lea, 1831 (unaccepted)
Species Unio asperulus I. Lea, 1866 (unaccepted, junior synonym)
Species Unio ater I. Lea, 1829 (unaccepted)
Species Unio ater Nilsson, 1822 (unaccepted)
Species Unio athesinus Adami, 1886 (unaccepted)
Species Unio athleta Lindholm, 1932 † (unaccepted, original combination)
Species Unio atrata Swainson, 1823 (unaccepted)
Species Unio atrocostatus I. Lea, 1845 (unaccepted)
Species Unio atromarginatus I. Lea, 1840 (unaccepted)
Species Unio attenuatus I. Lea, 1872 (unaccepted)
Species Unio aucklandicus Gray, 1843 (unaccepted)
Species Unio aureus I. Lea, 1859 (unaccepted)
Species Unio auricularius Spengler, 1793 (unaccepted, original combination)
Species Unio auroreus Heude, 1883 (unaccepted, original combination)
Species Unio australis Lamarck, 1819 (unaccepted, original combination)
Species Unio averellii B. H. Wright, 1888 (unaccepted, synonym)
Species Unio averyi I. Lea, 1859 (unaccepted)
Species Unio aztecorum Philippi, 1847 (unaccepted, original combination)
Species Unio bairdianus I. Lea, 1857 (unaccepted)
Species Unio bakeri H. Adams, 1866 (unaccepted, original combination)
Species Unio baldwinensis I. Lea, 1859 (unaccepted)
Species Unio balonnensis Conrad, 1850 (unaccepted, junior synonym)
Species Unio barnesianus I. Lea, 1838 (unaccepted, original combination)
Species Unio barrattii I. Lea, 1852 (unaccepted)
Species Unio barrotti Küster, 1861 (unaccepted)
Species Unio basalis I. Lea, 1872 (unaccepted)
Species Unio bazini Heude, 1877 (unaccepted, basionym)
Species Unio beadleianus I. Lea, 1861 (unaccepted)
Species Unio bealei I. Lea, 1862 (unaccepted)
Species Unio beaverensis I. Lea, 1868 (unaccepted)
Species Unio bednalli Tate, 1882 (unaccepted, junior synonym)
Species Unio bellulus I. Lea, 1872 (unaccepted)
Species Unio benacinus Drouët, 1883 (unaccepted)
Species Unio bengalensis I. Lea, 1838 (unaccepted)
Species Unio berlandieri I. Lea, 1857 (unaccepted, incorrect spelling)
Species Unio berlandierii I. Lea, 1857 (unaccepted)
Species Unio besckeanus Dunker, 1848 (unaccepted)
Species Unio betekeiensis Lindholm, 1932 † (unaccepted, original combination)
Species Unio bhamoensis Theobald, 1873 (unaccepted, original combination)
Species Unio biangularis I. Lea, 1840 (unaccepted)
Species Unio biangulatus I. Lea, 1842 (unaccepted, synonym; an emendation of Unio biangularis I. Lea, 1840)
Species Unio bicaelatus Reeve, 1865 (unaccepted, synonym)
Species Unio biemarginatus I. Lea, 1857 (unaccepted)
Species Unio biesianus Heude, 1877 (unaccepted, original combination)
Species Unio bigbyensis I. Lea, 1841 (unaccepted)
Species Unio binneyi I. Lea, 1845 (unaccepted, junior synonym)
Species Unio bisselianus I. Lea, 1867 (unaccepted)
Species Unio bituberculosus von Martens, 1874 † (unaccepted)
Species Unio blandianus I. Lea, 1857 (unaccepted)
Species Unio blandingianus I. Lea, 1834 (unaccepted)
Species Unio bollii Call, 1881 (unaccepted)
Species Unio bonellii Férussac, 1827 (unaccepted, original combination)
Species Unio bonneaudii Eydoux, 1838 (unaccepted, basionym)
Species Unio borealis Gray, 1882 (unaccepted)
Species Unio borneeensis Issel, 1874 (unaccepted, basionym)
Species Unio bourguignatianus Adami, 1886 (unaccepted, invalid: junior homonym of Unio bourguignatianus I. Lea, 1863; U. magistri is a replacement name)
Species Unio bournianus I. Lea, 1840 (unaccepted)
Species Unio boydianus I. Lea, 1840 (unaccepted)
Species Unio boykinianus I. Lea, 1840 (unaccepted)
Species Unio brachyrhynchus Drouët, 1881 (unaccepted)
Species Unio bracteatus Gould, 1855 (unaccepted)
Species Unio brandtii Kobelt, 1879 (unaccepted, basionym)
Species Unio brazoensis I. Lea, 1868 (unaccepted)
Species Unio brazosensis I. Lea, 1868 (unaccepted)
Species Unio breviculus Call, 1887 (unaccepted)
Species Unio brevidens I. Lea, 1831 (unaccepted, original combination)
Species Unio breviplicatus Noulet, 1864 † (unaccepted)
Species Unio brevis I. Lea, 1872 (unaccepted)
Species Unio brianteus Drouët, 1883 (unaccepted)
Species Unio briarti Dautzenberg, 1901 (unaccepted, original combination)
Species Unio brimleyi S. H. Wright, 1897 (unaccepted)
Species Unio broti Deshayes, 1876 (unaccepted)
Species Unio brownianus I. Lea, 1838 (unaccepted)
Species Unio brownii I. Lea, 1856 (unaccepted, junior synonym)
Species Unio brumbyanus I. Lea, 1841 (unaccepted)
Species Unio brumleyanus I. Lea, 1841 (unaccepted, incorrect original spelling)
Species Unio buckleyi I. Lea, 1843 (unaccepted)
Species Unio buddianus I. Lea, 1843 (unaccepted)
Species Unio bulbosus I. Lea, 1857 (unaccepted)
Species Unio burkensis I. Lea, 1859 (unaccepted)
Species Unio burmanus Blanford, 1869 (unaccepted, original combination)
Species Unio burroughianus I. Lea, 1834 (unaccepted, basionym)
Species Unio bursapastoris B. H. Wright, 1896 (unaccepted)
Species Unio burtchianus S. H. Wright, 1897 (unaccepted)
Species Unio burtoni Woodward, 1859 (unaccepted, original combination)
Species Unio buxeus I. Lea, 1852 (unaccepted)
Species Unio buxtoni B. H. Wright, 1897 (unaccepted)
Species Unio cacao I. Lea, 1859 (unaccepted)
Species Unio caelatus Conrad, 1834 (unaccepted)
Species Unio caeruleus I. Lea, 1831 (unaccepted, original combination)
Species Unio cahabensis I. Lea, 1871 (unaccepted)
Species Unio caipira Ihering, 1893 (unaccepted, basionym)
Species Unio calamitarum Morelet, 1849 (unaccepted, basionym)
Species Unio calceolus I. Lea, 1827 (unaccepted)
Species Unio caldwellii I. Lea, 1858 (unaccepted, basionym)
Species Unio caliginosus I. Lea, 1845 (unaccepted, original combination)
Species Unio callosus I. Lea, 1841 (unaccepted, basionym)
Species Unio cambodiensis I. Lea, 1856 (unaccepted, original combination)
Species Unio cambojensis Sowerby, 1866 (unaccepted, junior synonym)
Species Unio camelopardilis I. Lea, 1860 (unaccepted, synonym)
Species Unio camelus I. Lea, 1834 (unaccepted)
Species Unio camptodon Say, 1832 (unaccepted)
Species Unio canadensis I. Lea, 1857 (unaccepted)
Species Unio capax Green, 1832 (unaccepted)
Species Unio caperatus I. Lea, 1845 (unaccepted)
Species Unio capillaris I. Lea, 1834 (unaccepted)
Species Unio capillus Say, 1831 (unaccepted, synonym)
Species Unio capitatus Heude, 1874 (unaccepted, basionym)
Species Unio capsaeformis I. Lea, 1834 (unaccepted, original combination)
Species Unio carbonarius I. Lea, 1838 (unaccepted)
Species Unio cardiacea Guerin, 1823 (unaccepted)
Species Unio carinatus Barnes, 1823 (unaccepted)
Species Unio carinifera Lamarck, 1819 (unaccepted)
Species Unio cariosus Say, 1817 (unaccepted, original combination)
Species Unio caroliniana Bosc, 1801 (unaccepted)
Species Unio castaneus I. Lea, 1831 (unaccepted)
Species Unio castus I. Lea, 1860 (unaccepted)
Species Unio catawbensis I. Lea, 1857 (unaccepted)
Species Unio catillus Conrad, 1836 (unaccepted)
Species Unio caudiculatus von Martens, 1867 (unaccepted, original combination)
Species Unio caveatus Heude, 1877 (unaccepted, basionym)
Species Unio celtiformis Heude, 1874 (unaccepted, basionym)
Species Unio ceratinus Drouët, 1879 (unaccepted)
Species Unio cerinus Conrad, 1838 (unaccepted)
Species Unio charlottensis I. Lea, 1863 (unaccepted)
Species Unio charon Preston, 1910 (unaccepted, junior synonym)
Species Unio charruana d'Orbigny, 1835 (unaccepted, basionym)
Species Unio chathamensis I. Lea, 1863 (unaccepted)
Species Unio chattanoogaensis I. Lea, 1858 (unaccepted)
Species Unio chickasawhensis I. Lea, 1861 (unaccepted)
Species Unio childreni Gray in Griffith & Pidgeon, 1833 (unaccepted, junior synonym)
Species Unio chilensis Gray, 1828 (unaccepted, original combination)
Species Unio chinensis I. Lea, 1868 (unaccepted, original combination)
Species Unio chipolaensis Walker, 1905 (unaccepted)
Species Unio choziensis Preston, 1910 (unaccepted, original combination)
Species Unio chunii I. Lea, 1862 (unaccepted)
Species Unio cicatricoides Frierson, 1911 (unaccepted)
Species Unio cicatricosus Say, 1829 (unaccepted)
Species Unio cicur I. Lea, 1861 (unaccepted)
Species Unio cilindricus Say, 1817 (unaccepted, incorrect subsequent spelling)
Species Unio cincinnatiensis I. Lea, 1840 (unaccepted)
Species Unio cinnamomicus I. Lea, 1861 (unaccepted)
Species Unio circulus I. Lea, 1829 (unaccepted)
Species Unio circumactus I. Lea, 1871 (unaccepted)
Species Unio cirratus I. Lea, 1874 (unaccepted)
Species Unio cistellaeformis I. Lea, 1863 (unaccepted)
Species Unio claibornensis I. Lea, 1838 (unaccepted)
Species Unio clarkianus I. Lea, 1852 (unaccepted)
Species Unio clava Lamarck, 1819 (unaccepted)
Species Unio clinchensis I. Lea, 1867 (unaccepted)
Species Unio coarctata Lamarck, 1819 (unaccepted)
Species Unio coccineus Conrad, 1836 (unaccepted)
Species Unio coccineus I. Lea, 1838 (unaccepted)
Species Unio cocoduensis Reeve, 1865 (unaccepted, synonym)
Species Unio coelatus Conrad, 1834 (unaccepted)
Species Unio cognatus I. Lea, 1860 (unaccepted)
Species Unio collinus Conrad, 1837 (unaccepted, original combination)
Species Unio coloradoensis I. Lea, 1856 (unaccepted)
Species Unio coloratus Küster, 1856 (unaccepted, basionym)
Species Unio columbensis I. Lea, 1857 (unaccepted)
Species Unio compactus I. Lea, 1859 (unaccepted)
Species Unio compertus Frierson, 1911 (unaccepted)
Species Unio complanatus (Lightfoot, 1786) (unaccepted)
Species Unio compressa (I. Lea, 1830) (unaccepted)
Species Unio compressissimus I. Lea, 1845 (unaccepted)
Species Unio compressus Rafinesque, 1831 (unaccepted)
Species Unio comptus Deshayes & Jullien, 1876 (unaccepted, basionym)
Species Unio computatus Crosse & P. Fischer, 1893 (unaccepted, basionym)
Species Unio conasaugaensis I. Lea, 1872 (unaccepted)
Species Unio concavus I. Lea, 1852 (unaccepted, synonym)
Species Unio concestator I. Lea, 1857 (unaccepted, synonym)
Species Unio concolor I. Lea, 1861 (unaccepted)
Species Unio confertus I. Lea, 1834 (unaccepted)
Species Unio congaraeus I. Lea, 1831 (unaccepted, original combination)
Species Unio congareus I. Lea, 1831 (unaccepted, incorrect spelling)
Species Unio conjugans B. H. Wright, 1899 (unaccepted)
Species Unio conradicus I. Lea, 1834 (unaccepted, original combination)
Species Unio consanguineus I. Lea, 1861 (unaccepted)
Species Unio conspicuus I. Lea, 1872 (unaccepted)
Species Unio contiguus I. Lea, 1862 (unaccepted, synonym)
Species Unio contortus (I. Lea, 1857) (unaccepted, junior synonym)
Species Unio contractus I. Lea, 1857 (unaccepted)
Species Unio contradens I. Lea, 1838 (unaccepted, original name)
Species Unio contrarius Conrad, 1849 (unaccepted)
Species Unio conus Spengler, 1793 (unaccepted)
Species Unio cooperianus I. Lea, 1834 (unaccepted, original combination)
Species Unio copei I. Lea, 1868 (unaccepted)
Species Unio cor Conrad, 1834 (unaccepted)
Species Unio corbis Hanley, 1856 (unaccepted)
Species Unio coreanus von Martens, 1886 (unaccepted, basionym)
Species Unio coriaceus Dunker, 1848 (unaccepted)
Species Unio corneus I. Lea, 1874 (unaccepted)
Species Unio cornutus Barnes, 1823 (unaccepted)
Species Unio cornuumlunae Heude, 1883 (unaccepted, basionym)
Species Unio corrianus I. Lea, 1834 (unaccepted, original combination)
Species Unio corrosus A. Villa & J. B. Villa, 1841 (unaccepted)
Species Unio coruscus Gould, 1856 (unaccepted)
Species Unio corvinus I. Lea, 1868 (unaccepted)
Species Unio corvunculus I. Lea, 1868 (unaccepted)
Species Unio corvus I. Lea, 1859 (unaccepted)
Species Unio costatus Goldfuss, 1837 † (unaccepted)
Species Unio couchianus I. Lea, 1860 (unaccepted, original combination)
Species Unio crapulus I. Lea, 1861 (unaccepted)
Species Unio crassidens Lamarck, 1819 (unaccepted)
Species Unio crassus Say, 1817 (unaccepted, invalid: junior homonym of Unio crassus Philipsson, 1788)
Species Unio crebrivittatus I. Lea, 1861 (unaccepted)
Species Unio creperus I. Lea, 1838 (unaccepted, synonym)
Species Unio crispisulcatus Benson, 1862 (unaccepted, original combination)
Species Unio cristophori Adami, 1886 (unaccepted)
Species Unio crocatus I. Lea, 1841 (unaccepted)
Species Unio crocodilorum Morelet, 1849 (unaccepted, a junior synonym)
Species Unio cromwellii I. Lea, 1865 (unaccepted)
Species Unio crossei Deshayes, 1876 (unaccepted, original combination)
Species Unio crudus I. Lea, 1871 (unaccepted)
Species Unio cucumoides I. Lea, 1840 (unaccepted, junior synonym)
Species Unio cultelliformis Conrad, 1850 (unaccepted, junior synonym)
Species Unio cultratus Rafinesque, 1831 (unaccepted)
Species Unio cumberlandicus I. Lea, 1838 (unaccepted, synonym)
Species Unio cumingianus Dunker, 1852 (unaccepted, junior synonym)
Species Unio cumingii I. Lea, 1852 (unaccepted, original combination)
Species Unio cuneatus Barnes, 1823 (unaccepted)
Species Unio cuneatus Swainson, 1823 (unaccepted)
Species Unio cuneolus I. Lea, 1840 (unaccepted, original combination)
Species Unio cuneus Conrad, 1838 (unaccepted)
Species Unio cunninghami B. H. Wright, 1883 (unaccepted)
Species Unio cuprinus I. Lea, 1831 (unaccepted)
Species Unio curatus I. Lea, 1863 (unaccepted)
Species Unio curtus I. Lea, 1859 (unaccepted)
Species Unio curvatus I. Lea, 1872 (unaccepted)
Species Unio cusianus Pini, 1885 (unaccepted)
Species Unio cuspidatus I. Lea, 1872 (unaccepted)
Species Unio cuvierianus I. Lea, 1852 (unaccepted)
Species Unio cylindrellus I. Lea, 1868 (unaccepted)
Species Unio cylindricus Say, 1817 (unaccepted, original combination)
Species Unio cyphia (Rafinesque, 1820) (unaccepted)
Species Unio cyrenoides Philippi, 1847 (unaccepted, basionym)
Species Unio dactylus I. Lea, 1840 (unaccepted)
Species Unio dahuricus Middendorff, 1850 (unaccepted, original combination)
Species Unio dalli B. H. Wright, 1888 (unaccepted)
Species Unio dalmaticus Drouët, 1879 (unaccepted)
Species Unio danelli Villa, 1871 (unaccepted, junior synonym)
Species Unio danielsii B. H. Wright, 1899 (unaccepted)
Species Unio dariensis I. Lea, 1842 (unaccepted, original combination)
Species Unio datus I. Lea, 1868 (unaccepted)
Species Unio dautzenbergi Morlet, 1889 (unaccepted, junior synonym)
Species Unio decipiens Drouët, 1881 (unaccepted)
Species Unio decisus I. Lea, 1831 (unaccepted, original combination)
Species Unio declivis Say, 1831 (unaccepted)
Species Unio decoratus I. Lea, 1852 (unaccepted)
Species Unio decumbens I. Lea, 1861 (unaccepted)
Species Unio dehiscens Say, 1829 (unaccepted)
Species Unio delesserti Bourguignat, 1852 (unaccepted)
Species Unio delodonta Lamarck, 1819 (unaccepted, basionym)
Species Unio delphinulus Morelet, 1849 (unaccepted, original combination)
Species Unio delpretei Bourguignat, 1883 (unaccepted)
Species Unio delumbis Conrad, 1834 (unaccepted, original combination)
Species Unio denigratus I. Lea, 1857 (unaccepted)
Species Unio depressa Lamarck, 1819 (unaccepted, original combination)
Species Unio depressus Reeve, 1864 (unaccepted, Invalid: junior homonym of Unio depressus Lamarck, 1819)
Species Unio depygis Conrad, 1866 (unaccepted)
Species Unio detectus Frierson, 1911 (unaccepted)
Species Unio deviatus Reeve, 1864 (unaccepted)
Species Unio diazensis S. H. Wright, 1897 (unaccepted)
Species Unio diespiter Mabille, 1887 (unaccepted, original combination)
Species Unio differtus I. Lea, 1872 (unaccepted)
Species Unio difficilis I. Lea, 1868 (unaccepted, synonym)
Species Unio dimotus I. Lea, 1870 (unaccepted, junior synonym)
Species Unio directus Drouët, 1896 (unaccepted)
Species Unio discrepans I. Lea, 1860 (unaccepted, synonym)
Species Unio discus I. Lea, 1838 (unaccepted, original combination)
Species Unio dispalans Wright, B.H., 1899 (unaccepted)
Species Unio dispansus I. Lea, 1871 (unaccepted, synonym)
Species Unio dispar I. Lea, 1860 (unaccepted, synonym)
Species Unio dissimilis I. Lea, 1872 (unaccepted)
Species Unio distans J. G. Anthony, 1865 (unaccepted)
Species Unio distinctus Crosse & P. Fischer, 1893 (unaccepted, basionym)
Species Unio distinguendus Lindholm, 1932 † (unaccepted, basionym)
Species Unio divaricatus I. Lea, 1834 (unaccepted)
Species Unio diversus Conrad, 1856 (unaccepted)
Species Unio dolabelloides I. Lea, 1840 (unaccepted, original combination)
Species Unio dolabraeformis I. Lea, 1838 (unaccepted, original combination)
Species Unio doliaris I. Lea, 1865 (unaccepted)
Species Unio dolichorhynchus Tapparone Canefri, 1889 (unaccepted, basionym)
Species Unio dolosus I. Lea, 1860 (unaccepted)
Species Unio dombeyana Valenciennes, 1827 (unaccepted)
Species Unio donaciformis I. Lea, 1827 (unaccepted, original combination)
Species Unio donacopsis de Gregorio, 1914 (unaccepted, synonym)
Species Unio dooleyensis I. Lea, 1874 (unaccepted)
Species Unio dorei B. H. Wright, 1888 (unaccepted)
Species Unio dorfeuillianus I. Lea, 1838 (unaccepted, original combination)
Species Unio dorri Wattebled, 1886 (unaccepted, original combination)
Species Unio dorsatus I. Lea, 1868 (unaccepted)
Species Unio dorsuosus Gould, 1850 (unaccepted, junior synonym)
Species Unio douglasiae Gray, 1833 (unaccepted, original combination)
Species Unio downiei I. Lea, 1858 (unaccepted)
Species Unio dromas I. Lea, 1834 (unaccepted, original combination)
Species Unio duclerci Rochebrune, 1882 (unaccepted, junior synonym)
Species Unio dunkerianus I. Lea, 1856 (unaccepted)
Species Unio duttonianus I. Lea, 1841 (unaccepted)
Species Unio dysonii I. Lea, 1859 (unaccepted, basionym)
Species Unio ebenus I. Lea, 1831 (unaccepted, original combination)
Species Unio edentulus (Say, 1829) (unaccepted)
Species Unio edgarianus I. Lea, 1840 (unaccepted)
Species Unio effulgens I. Lea, 1856 (unaccepted, junior synonym)
Species Unio eightsii I. Lea, 1860 (unaccepted)
Species Unio electrinus Reeve, 1865 (unaccepted)
Species Unio elegans I. Lea, 1831 (unaccepted)
Species Unio elliottii I. Lea, 1857 (unaccepted, original combination)
Species Unio ellipsiformis Conrad, 1836 (unaccepted, original combination)
Species Unio ellipsis I. Lea, 1827 (unaccepted)
Species Unio ellipticus Barnes, 1823 (unaccepted)
Species Unio elongata Lamarck, 1819 (unaccepted, incorrect gender agreement of specific epithet)
Species Unio elongatus Lamarck, 1819 (unaccepted)
Species Unio emarginatus I. Lea, 1834 (unaccepted)
Species Unio emmonsii I. Lea, 1857 (unaccepted)
Species Unio errans I. Lea, 1857 (unaccepted, original combination)
Species Unio essoensis Chaper, 1885 (unaccepted, original combination)
Species Unio estabrookianus I. Lea, 1845 (unaccepted)
Species Unio eucallistellus Bourguignat, 1883 (unaccepted)
Species Unio euliratus Rafinesque, 1831 (unaccepted)
Species Unio euphraticus Bourguignat, 1852 (unaccepted, original combination)
Species Unio exactus I. Lea, 1858 (unaccepted)
Species Unio exacutus I. Lea, 1872 (unaccepted)
Species Unio exanthematicus Küster, 1861 (unaccepted, basionym)
Species Unio excavatus I. Lea, 1857 (unaccepted)
Species Unio excultus Conrad, 1838 (unaccepted)
Species Unio exiguus I. Lea, 1840 (unaccepted, synonym)
Species Unio exilis Dunker, 1846 (unaccepted, junior synonym)
Species Unio eximius I. Lea, 1856 (unaccepted)
Species Unio exolescens Gould, 1843 (unaccepted, original combination)
Species Unio expansus Küster, 1856 (unaccepted)
Species Unio explicatus Morelet, 1849 (unaccepted, original combination)
Species Unio extensus I. Lea, 1857 (unaccepted)
Species Unio fabaceus I. Lea, 1861 (unaccepted, synonym)
Species Unio fabagina Deshayes, 1876 (unaccepted, original combination)
Species Unio fabalis I. Lea, 1831 (unaccepted, original combination)
Species Unio fallax I. Lea, 1857 (unaccepted, synonym)
Species Unio fassinans I. Lea, 1868 (unaccepted)
Species Unio fatuus I. Lea, 1840 (unaccepted, synonym)
Species Unio favidens Benson, 1862 (unaccepted, basionym)
Species Unio favosus I. Lea, 1857 (unaccepted)
Species Unio feae Tapparone Canefri, 1889 (unaccepted, original combination)
Species Unio feddeni Theobald, 1873 (unaccepted, original combination)
Species Unio fellmanni Deshayes, 1848 (unaccepted)
Species Unio ferrissii Marsh, 1891 (unaccepted)
Species Unio fibrosus Heude, 1877 (unaccepted, basionym)
Species Unio fibuloides I. Lea, 1859 (unaccepted)
Species Unio fiscallianus Kobelt, 1873 (unaccepted)
Species Unio fischerianus Morlet, 1883 (unaccepted, junior synonym)
Species Unio fisherianus I. Lea, 1838 (unaccepted, original combination)
Species Unio fissidentatus Lindholm, 1932 † (unaccepted, basionym)
Species Unio flabellatus Goldfuss, 1837 † (unaccepted)
Species Unio flabelliferus Noulet, 1864 † (unaccepted)
Species Unio flagellatus Say, 1830 (unaccepted)
Species Unio flavescens I. Lea, 1845 (unaccepted)
Species Unio flavidulus I. Lea, 1861 (unaccepted)
Species Unio flavidus I. Lea, 1872 (unaccepted)
Species Unio florentinus I. Lea, 1857 (unaccepted, original combination)
Species Unio floridensis I. Lea, 1852 (unaccepted)
Species Unio fluminalis Drouët, 1883 (unaccepted)
Species Unio fluviatilis Green, 1827 (unaccepted)
Species Unio flyensis Tapparone Canefri, 1883 (unaccepted, original combination)
Species Unio foliaceus Gould, 1843 (unaccepted, original combination)
Species Unio foliatus Hildreth, 1828 (unaccepted)
Species Unio folliculatus I. Lea, 1838 (unaccepted, original combination)
Species Unio fontainiana Unio (unaccepted, basionym)
Species Unio fontanus Conrad, 1866 (unaccepted, synonym)
Species Unio footei Theobald, 1876 (unaccepted, basionym)
Species Unio forbesianus I. Lea, 1852 (unaccepted)
Species Unio foremanianus I. Lea, 1842 (unaccepted, original combination)
Species Unio formosus I. Lea, 1831 (unaccepted)
Species Unio forsheyi I. Lea, 1859 (unaccepted)
Species Unio fragosus Conrad, 1835 (unaccepted, original combination)
Species Unio fragrosus (unaccepted, incorrect subsequent spelling)
Species Unio framesi (Connolly, 1925) (unaccepted, superseded combination)
Species Unio fraternus I. Lea, 1852 (unaccepted)
Species Unio friersoni B. H. Wright, 1896 (unaccepted)
Species Unio fruhstorferi Dautzenberg, 1900 (unaccepted, basionym)
Species Unio fryanus B. H. Wright, 1888 (unaccepted)
Species Unio fucatus I. Lea, 1860 (unaccepted, synonym)
Species Unio fulgidus I. Lea, 1845 (unaccepted)
Species Unio fuliginosus I. Lea, 1845 (unaccepted)
Species Unio fuligo Reeve, 1856 (unaccepted, synonym)
Species Unio fulvaster Drouët & Chaper, 1892 (unaccepted)
Species Unio fulvus I. Lea, 1834 (unaccepted)
Species Unio fumatus I. Lea, 1857 (unaccepted)
Species Unio funebralis I. Lea, 1860 (unaccepted, basionym)
Species Unio furvus Conrad, 1834 (unaccepted)
Species Unio fuscatus I. Lea, 1843 (unaccepted)
Species Unio fusculus Ziegler in Rossmässler, 1835 (unaccepted)
Species Unio gabbianus I. Lea, 1868 (unaccepted, basionym)
Species Unio gabonensis Küster, 1862 (unaccepted, original combination)
Species Unio gastonensis I. Lea, 1863 (unaccepted)
Species Unio gaudichaudii Eydoux, 1838 (unaccepted, a junior synonym)
Species Unio geddingsianus I. Lea, 1840 (unaccepted)
Species Unio geminus I. Lea, 1857 (unaccepted)
Species Unio generosus Gould, 1847 (unaccepted, original combination)
Species Unio genthii I. Lea, 1857 (unaccepted)
Species Unio genuinus I. Lea, 1868 (unaccepted, synonym)
Species Unio geometricus I. Lea, 1834 (unaccepted)
Species Unio georgianus I. Lea, 1841 (unaccepted, original combination)
Species Unio georgina Lamarck, 1819 (unaccepted)
Species Unio gerbidoni Eydoux, 1838 (unaccepted, a junior synonym)
Species Unio gereti Preston, 1910 (unaccepted, junior synonym)
Species Unio gerhardtii I. Lea, 1862 (unaccepted)
Species Unio germanus I. Lea, 1861 (unaccepted)
Species Unio gesnerii I. Lea, 1874 (unaccepted)
Species Unio gianellii Tapparone Canefri, 1889 (unaccepted)
Species Unio gibber I. Lea, 1838 (unaccepted, original combination)
Species Unio gibbesianus I. Lea, 1852 (unaccepted)
Species Unio gibbosus Barnes, 1823 (unaccepted)
Species Unio giganteus Barnes, 1823 (unaccepted)
Species Unio gigas Swainson, 1824 (unaccepted)
Species Unio glaber I. Lea, 1838 (unaccepted, synonym)
Species Unio glabrata Lamarck, 1819 (unaccepted)
Species Unio gladiator Ancey, 1881 (unaccepted, original combination)
Species Unio gladiolus Heude, 1877 (unaccepted, basionym)
Species Unio glandaceus I. Lea, 1861 (unaccepted)
Species Unio glans I. Lea, 1831 (unaccepted)
Species Unio glaucinus Porro, 1838 (unaccepted)
Species Unio glebulus Say, 1831 (unaccepted)
Species Unio glenelgensis Dennant, 1898 (unaccepted, original combination)
Species Unio globatus I. Lea, 1871 (unaccepted)
Species Unio goascoranensis I. Lea, 1858 (unaccepted, basionym)
Species Unio gottschei von Martens, 1894 (unaccepted, basionym)
Species Unio gouldii I. Lea, 1845 (unaccepted, synonym)
Species Unio gowhattensis Theobald, 1873 (unaccepted)
Species Unio gracilentus I. Lea, 1857 (unaccepted)
Species Unio gracilior I. Lea, 1857 (unaccepted, synonym)
Species Unio gracilis Barnes, 1823 (unaccepted)
Species Unio gracillior "I. Lea, 1858" (unaccepted, incorrect subsequent spelling)
Species Unio granadensis I. Lea, 1868 (unaccepted, basionym)
Species Unio grandensis Conrad, 1855 (unaccepted)
Species Unio grandidens I. Lea, 1862 (unaccepted, basionym)
Species Unio graniferus (I. Lea, 1838) (unaccepted, recombination)
Species Unio granosa Bruguière, 1792 (unaccepted, basionym)
Species Unio granulatis (I. Lea, 1861) (unaccepted, incorrect original spelling)
Species Unio granulatus I. Lea, 1861 (unaccepted)
Species Unio granuliferus Dunker, 1848 (unaccepted)
Species Unio gratiosus Philippi, 1843 (unaccepted, basionym)
Species Unio gratus I. Lea, 1860 (unaccepted, basionym)
Species Unio gravidus I. Lea, 1856 (unaccepted, junior synonym)
Species Unio grayanus I. Lea, 1834 (unaccepted, original combination)
Species Unio grayii Griffith & Pidgeon, 1833 (unaccepted, basionym)
Species Unio gredleri Drouët, 1883 (unaccepted)
Species Unio gredleri Adami, 1886 (unaccepted, invalid: junior homonym of Unio gredleri Drouët, 1883; U. humerosus is a replacement name)
Species Unio greeffeanus Ihering, 1893 (unaccepted, basionym)
Species Unio greenii Conrad, 1834 (unaccepted)
Species Unio griffithianus I. Lea, 1834 (unaccepted)
Species Unio guaraniana d'Orbigny, 1835 (unaccepted, basionym)
Species Unio gubernaculum Reeve, 1865 (unaccepted, original combination)
Species Unio gundlachi Dunker, 1858 (unaccepted, basionym)
Species Unio guppyi E. A. Smith, 1885 (unaccepted, original combination)
Species Unio gurkensis Bourguignat, 1883 (unaccepted)
Species Unio hageni Strubell, 1897 (unaccepted, junior synonym)
Species Unio hagnei Simpson, 1900 (unaccepted, in error for Unio hageni Strubell, 1897)
Species Unio hainesianus I. Lea, 1856 (unaccepted, original name)
Species Unio haleianus I. Lea, 1842 (unaccepted)
Species Unio hallenbeckii I. Lea, 1859 (unaccepted)
Species Unio hanleyianus I. Lea, 1852 (unaccepted, original combination)
Species Unio harperi B. H. Wright, 1899 (unaccepted)
Species Unio hartmanianus I. Lea, 1860 (unaccepted)
Species Unio hartwrightii B. H. Wright, 1896 (unaccepted)
Species Unio hastatus I. Lea, 1874 (unaccepted)
Species Unio hauttecoeuri Bourguignat, 1883 (unaccepted, original combination)
Species Unio haysianus I. Lea, 1834 (unaccepted, original combination)
Species Unio hazelhurstianus I. Lea, 1858 (unaccepted)
Species Unio hazlehurstianus I. Lea, 1858 (unaccepted, incorrect original spelling)
Species Unio hebes I. Lea, 1852 (unaccepted)
Species Unio hebetatus Conrad, 1854 (unaccepted)
Species Unio heermannii I. Lea, 1862 (unaccepted)
Species Unio hembeli Conrad, 1838 (unaccepted, original combination)
Species Unio hepaticus I. Lea, 1859 (unaccepted)
Species Unio heres Neumayr, 1899 (unaccepted, a junior synonym)
Species Unio heros Say, 1829 (unaccepted)
Species Unio heterodon I. Lea, 1829 (unaccepted, original combination)
Species Unio heudei Heude, 1874 (unaccepted, basionym)
Species Unio hians Valenciennes, 1821 (unaccepted)
Species Unio higginsii I. Lea, 1857 (unaccepted, original combination)
Species Unio hildrethi Delessert, 1841 (unaccepted)
Species Unio hildrethianus I. Lea, 1834 (unaccepted)
Species Unio hinkleyi B. H. Wright, 1888 (unaccepted)
Species Unio hippopoeus I. Lea, 1845 (unaccepted)
Species Unio hjalmarsoni Dunker, 1858 (unaccepted, basionym)
Species Unio hochstetteri Dunker, 1862 (unaccepted)
Species Unio holstonensis I. Lea, 1840 (unaccepted)
Species Unio homsensis I. Lea, 1865 (unaccepted, original combination)
Species Unio hopetonensis I. Lea, 1838 (unaccepted, original combination)
Species Unio horei E.A. Smith, 1880 (unaccepted, original combination)
Species Unio houngdarauicus Tapparone Canefri, 1889 (unaccepted, original combination)
Species Unio housei I. Lea, 1856 (unaccepted)
Species Unio houstonensis I. Lea, 1859 (unaccepted)
Species Unio humerosus I. Lea, 1868 (unaccepted)
Species Unio humerosus Westerlund, 1890 (unaccepted, invalid: junior homonym of Unio humerosus I. Lea, 1868)
Species Unio humilior Lindholm, 1932 † (unaccepted, basionym)
Species Unio humilis I. Lea, 1856 (unaccepted, original combination)
Species Unio hyalinus I. Lea, 1845 (unaccepted)
Species Unio hydianus I. Lea, 1838 (unaccepted, original combination)
Species Unio hylaea d'Orbigny, 1835 (unaccepted, basionym)
Species Unio hypsiprymnus von Martens, 1897 (unaccepted, original combination)
Species Unio icterinus Conrad, 1834 (unaccepted)
Species Unio idrinus Drouët, 1883 (unaccepted)
Species Unio iheringi B. H. Wright, 1898 (unaccepted)
Species Unio imbricatus Mörch, 1861 (unaccepted, basionym)
Species Unio imperialis Morelet, 1862 (unaccepted, junior synonym)
Species Unio imperitus de Gregorio, 1914 (unaccepted)
Species Unio inaequalis Rochebrune, 1882 (unaccepted, basionym)
Species Unio incrassatus I. Lea, 1840 (unaccepted)
Species Unio incurvus I. Lea, 1831 (unaccepted)
Species Unio indefinilus (I. Lea, 1863) (unaccepted, incorrect subsequent spelling)
Species Unio indefinitus I. Lea, 1863 (unaccepted)
Species Unio ineptus I. Lea, 1852 (unaccepted)
Species Unio inflata Hutton, 1873 † (unaccepted, Invalid: not Studer, 1820)
Species Unio inflatus Barnes, 1823 (unaccepted)
Species Unio infucatus Conrad, 1834 (unaccepted)
Species Unio infulgens I. Lea, 1874 (unaccepted)
Species Unio infuscus I. Lea, 1872 (unaccepted)
Species Unio ingallsianus I. Lea, 1852 (unaccepted, basionym)
Species Unio inornatus Reeve, 1865 (unaccepted, junior synonym)
Species Unio inornatus I. Lea, 1856 (unaccepted)
Species Unio insolidus I. Lea, 1872 (unaccepted)
Species Unio instructus I. Lea, 1861 (unaccepted)
Species Unio insulsus I. Lea, 1857 (unaccepted)
Species Unio intercedens I. Lea, 1857 (unaccepted, synonym)
Species Unio intermedius Conrad, 1836 (unaccepted)
Species Unio interruptus Say, 1831 (unaccepted)
Species Unio interruptus I. Lea, 1838 (unaccepted, synonym)
Species Unio interventus I. Lea, 1861 (unaccepted)
Species Unio introrugatus Connolly, 1931 (unaccepted, junior synonym)
Species Unio inusitatis I. Lea, 1859 (unaccepted)
Species Unio invenustus I. Lea, 1874 (unaccepted)
Species Unio involutus Hanley, 1856 (unaccepted, basionym)
Species Unio irgizlaica Lindholm, 1904 (unaccepted)
Species Unio iridescens Conrad, 1838 (unaccepted, synonym)
Species Unio iris I. Lea, 1829 (unaccepted, original combination)
Species Unio irrasus I. Lea, 1861 (unaccepted)
Species Unio irroratus I. Lea, 1827 (unaccepted, original combination)
Species Unio irtyshensis Lindholm, 1932 † (unaccepted, basionym)
Species Unio irwinensis I. Lea, 1872 (unaccepted)
Species Unio istrianus Stossich, 1899 (unaccepted)
Species Unio jamesianus I. Lea, 1857 (unaccepted)
Species Unio japanensis I. Lea, 1859 (unaccepted, original combination)
Species Unio jaspidea Hupé, 1857 (unaccepted, basionym)
Species Unio javanus I. Lea, 1840 (unaccepted, junior synonym)
Species Unio jayensis I. Lea, 1838 (unaccepted, original combination)
Species Unio jeffreysianus I. Lea, 1871 (unaccepted, junior synonym)
Species Unio jejunus I. Lea, 1838 (unaccepted)
Species Unio jenkinsianus Benson, 1862 (unaccepted, basionym)
Species Unio jensenii Baker (unaccepted)
Species Unio jewettii I. Lea, 1867 (unaccepted)
Species Unio johannis I. Lea, 1859 (unaccepted)
Species Unio jokohamensis Ihering, 1893 (unaccepted, basionym)
Species Unio jonesii I. Lea, 1859 (unaccepted)
Species Unio jourdyi Morlet, 1886 (unaccepted, original combination)
Species Unio katherinae I. Lea, 1838 (unaccepted)
Species Unio keinerianus I. Lea, 1852 (unaccepted, incorrect original spelling)
Species Unio keraudreni Eydoux, 1838 (unaccepted, a junior synonym)
Species Unio kienerianus I. Lea, 1852 (unaccepted)
Species Unio kingii B. H. Wright, 1900 (unaccepted)
Species Unio kirklandianus S. H. Wright, 1897 (unaccepted)
Species Unio kirtlandianus I. Lea, 1834 (unaccepted)
Species Unio kizylaigirensis Lindholm, 1932 † (unaccepted, original combination)
Species Unio kleciaki Drouët, 1879 (unaccepted)
Species Unio kleinianus I. Lea, 1852 (unaccepted, original combination)
Species Unio kobelti Neumayr, 1899 (unaccepted, unavailable; a junior homonym of Unio kobelti Kobelt & Rolle, 1895)
Species Unio koseritzi Clessin, 1888 (unaccepted, basionym)
Species Unio kraussii I. Lea, 1853 (unaccepted, a replacement name for Castalia sulcata Krauss, 1848 to avoid secondary homonymy with Unio sulcatus I. Lea, 1829)
Species Unio kunenensis Mousson, 1888 (unaccepted, original combination)
Species Unio lacrymosus I. Lea, 1827 (unaccepted)
Species Unio lacteolus I. Lea, 1834 (unaccepted)
Species Unio laevissimus (I. Lea, 1829) (unaccepted, recombination)
Species Unio lamarckianus I. Lea, 1852 (unaccepted)
Species Unio lamellatus I. Lea, 1838 (unaccepted, original combination)
Species Unio lampreyanus Baird & Adams, 1867 (unaccepted, basionym)
Species Unio lanceolatus I. Lea, 1827 (unaccepted, original combination)
Species Unio languilati Heude, 1874 (unaccepted)
Species Unio laosensis I. Lea, 1863 (unaccepted, original combination)
Species Unio lapillus Say, 1831 (unaccepted, incorrect subsequent spelling of Unio capillus)
Species Unio largillierti Philippi, 1847 (unaccepted, basionym)
Species Unio larius Drouët, 1883 (unaccepted)
Species Unio latecostatus I. Lea, 1845 (unaccepted)
Species Unio latiplicatus Noulet, 1864 † (unaccepted)
Species Unio latiradiatus Conrad, 1838 (unaccepted, synonym)
Species Unio latissimus Sowerby, 1868 (unaccepted)
Species Unio latus I. Lea, 1859 (unaccepted)
Species Unio lawii I. Lea, 1871 (unaccepted)
Species Unio lazarus I. Lea, 1852 (unaccepted)
Species Unio leaii Gray in Griffith & Pidgeon, 1833 (unaccepted, original combination)
Species Unio lecontianus I. Lea, 1838 (unaccepted, original combination)
Species Unio legrandi Petterd, 1889 (unaccepted, junior synonym)
Species Unio lehmanii S. H. Wright, 1897 (unaccepted)
Species Unio leibii I. Lea, 1862 (unaccepted)
Species Unio lenior I. Lea, 1842 (unaccepted, original combination)
Species Unio lenis Conrad, 1838 (unaccepted)
Species Unio lenis I. Lea, 1840 (unaccepted, invalid, a junior homonym of Unio lenis Conrad, 1838)
Species Unio lens I. Lea, 1831 (unaccepted)
Species Unio lenticularis I. Lea, 1872 (unaccepted)
Species Unio leonensis Simpson, 1892 (unaccepted)
Species Unio leopoldvillensis Putzeys, 1898 (unaccepted, original combination)
Species Unio lepidus Gould, 1856 (unaccepted, synonym)
Species Unio leprosus Miles, 1861 (unaccepted)
Species Unio lesleyi I. Lea, 1860 (unaccepted)
Species Unio lessoni Küster, 1855 (unaccepted, junior synonym)
Species Unio lesueurianus I. Lea, 1840 (unaccepted)
Species Unio lewisii I. Lea, 1861 (unaccepted)
Species Unio liebmanni Philippi, 1847 (unaccepted, original combination)
Species Unio liedtkei Rolle, 1904 (unaccepted, junior synonym)
Species Unio lienosus Conrad, 1834 (unaccepted, original combination)
Species Unio ligamentina Lamarck, 1819 (unaccepted, original combination)
Species Unio ligatus I. Lea, 1872 (unaccepted)
Species Unio lijacensis Kobelt, 1890 (unaccepted)
Species Unio limatulus Conrad, 1849 (unaccepted)
Species Unio limosus Nilsson, 1822 (unaccepted)
Species Unio lincecumii I. Lea, 1868 (unaccepted)
Species Unio lindholmi Zhadin, 1938 (unaccepted, a junior synonym)
Species Unio lindsleyi I. Lea, 1860 (unaccepted, synonym)
Species Unio lineata Bory de St. Vincent, 1827 (unaccepted)
Species Unio lineatus I. Lea, 1840 (unaccepted, invalid, a homonym of Unio lineata Bory de St. Vincent, 1827)
Species Unio lineolatus (Rafinesque, 1820) (unaccepted)
Species Unio linguaeformis I. Lea, 1860 (unaccepted, tentative synonym)
Species Unio lingulatus Drouet & Chaper, 1892 (unaccepted, basionym)
Species Unio littoralis Cuvier, 1798 (unaccepted, original combination)
Species Unio litus I. Lea, 1871 (unaccepted)
Species Unio livingstonensis I. Lea, 1863 (unaccepted)
Species Unio longirostris Rossmässler, 1836 (unaccepted)
Species Unio longobardus Drouët, 1883 (unaccepted)
Species Unio lucidus I. Lea, 1863 (unaccepted)
Species Unio lugens Drouet & Chaper, 1892 (unaccepted, junior synonym)
Species Unio lugubris Say, 1832 (unaccepted)
Species Unio lugubris I. Lea, 1838 (unaccepted)
Species Unio lunulatus Pratt, 1876 (unaccepted)
Species Unio luridus I. Lea, 1852 (unaccepted)
Species Unio lutens I. Lea, 1856 (unaccepted, incorrect original spelling)
Species Unio luteola Lamarck, 1819 (unaccepted)
Species Unio luteus I. Lea, 1856 (unaccepted, junior synonym; emendation of Unio lutens)
Species Unio lutulentis Gould, 1850 (unaccepted)
Species Unio lyonii I. Lea, 1865 (unaccepted)
Species Unio macer I. Lea, 1857 (unaccepted)
Species Unio macnielii (I. Lea, 1869) (unaccepted, basionym)
Species Unio maconensis I. Lea, 1857 (unaccepted)
Species Unio macrodon I. Lea, 1859 (unaccepted)
Species Unio maculatus Conrad, 1834 (unaccepted)
Species Unio madagascariensis Sganzin, 1841 (unaccepted, original combination)
Species Unio maestus I. Lea, 1841 (unaccepted)
Species Unio magistri Westerlund, 1890 (unaccepted)
Species Unio manca Lamarck, 1819 (unaccepted)
Species Unio mandelayensis Theobald, 1873 (unaccepted)
Species Unio manubius Gould, 1855 (unaccepted)
Species Unio margaritifera (Linnaeus, 1758) (unaccepted)
Species Unio marginalis Lamarck, 1819 (unaccepted, original combination)
Species Unio marginis I. Lea, 1865 (unaccepted)
Species Unio marshii B. H. Wright, 1888 (unaccepted)
Species Unio martensi Ihering, 1893 (unaccepted, basionym)
Species Unio mashonae Preston, 1910 (unaccepted, junior synonym)
Species Unio masoni Conrad, 1834 (unaccepted)
Species Unio mauritianus I. Lea, 1859 (unaccepted, junior synonym)
Species Unio mecklenbergensis I. Lea, 1863 (unaccepted)
Species Unio medellinus I. Lea, 1838 (unaccepted, basionym)
Species Unio mederianus Küster, 1861 (unaccepted, junior synonym)
Species Unio mediocris I. Lea, 1863 (unaccepted)
Species Unio medius I. Lea, 1861 (unaccepted)
Species Unio melinus Conrad, 1838 (unaccepted)
Species Unio melleus I. Lea, 1859 (unaccepted, basionym)
Species Unio menkianus I. Lea, 1838 (unaccepted, synonym)
Species Unio menziesii Gray, 1843 (unaccepted)
Species Unio mercerii I. Lea, 1862 (unaccepted)
Species Unio meredithii I. Lea, 1858 (unaccepted)
Species Unio merus I. Lea, 1852 (unaccepted)
Species Unio metallicus Say, 1831 (unaccepted, basionym)
Species Unio metanevra (Rafinesque, 1820) (unaccepted)
Species Unio metastriatus Conrad, 1838 (unaccepted)
Species Unio mexicanus Philippi, 1847 (unaccepted, basionym)
Species Unio micans I. Lea, 1857 (unaccepted)
Species Unio micheloti Morlet, 1886 (unaccepted, original combination)
Species Unio microdon von Martens, 1887 (unaccepted, basionym)
Species Unio micropterus Morelet, 1866 (unaccepted, basionym)
Species Unio middendorffi Westerlund, 1890 (unaccepted)
Species Unio minor I. Lea, 1843 (unaccepted)
Species Unio minusculus Drouët, 1883 (unaccepted)
Species Unio misellus Morelet, 1865 (unaccepted, basionym)
Species Unio misoolensis Schepman, 1897 (unaccepted, original combination)
Species Unio mississippiensis Conrad, 1850 (unaccepted, synonym)
Species Unio mitchelli Simpson in Dall, 1895 (unaccepted)
Species Unio modicellus I. Lea, 1859 (unaccepted)
Species Unio modicus I. Lea, 1857 (unaccepted)
Species Unio modioliformis I. Lea, 1834 (unaccepted, synonym)
Species Unio molleuri Morlet, 1891 (unaccepted)
Species Unio monceti Bourguignat, 1883 (unaccepted, basionym)
Species Unio mongolicus Middendorff, 1851 (unaccepted, original combination)
Species Unio monodonta Say, 1829 (unaccepted, original combination)
Species Unio monroensis I. Lea, 1843 (unaccepted, original combination)
Species Unio mooresianus I. Lea, 1857 (unaccepted)
Species Unio moraiensis Suzuki, 1941 † (unaccepted)
Species Unio moretonicus Reeve, 1865 (unaccepted, original combination)
Species Unio morlachicus Kobelt, 1914 (unaccepted)

marine, brackish, fresh, terrestrial

masculine

Retzius A.J. (1788). <i>Dissertatio historico-naturalis sistens nova testaceorum genera. Quam præside D. M. Andr. J. Retzio (...) ad publicum examen defert Laurentius Münter Philipsson</i>. 4+23 pp. Lund. , available online at http://gdz.sub.uni-goettingen.de/dms/load/img/?PID=PPN581964985|LOG_0001&physid=PHYS_0004
page(s): 16 [details]   

MolluscaBase (2019). MolluscaBase. Unio Philipsson, 1788. Accessed at: http://www.molluscabase.org/aphia.php?p=taxdetails&id=182707 on 2020-02-21

 The webpage text is licensed under a Creative Commons Attribution 4.0 License

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