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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 custom Google search field. Either way, you win! This page documents data for Conrad (1853), such as genera and species attributed to that publication (including known misspellings, misidentifications, and other unavailable names) as well as taxonomic opinions, if available. Taxonomic opinions refer to uses of genera and species as valid and invalid in that work. The MUSSEL Project Database has moved to a new server, with a new URL! The new address for this page is: https://musselpdb.org/db.php?ty=publ&id=236 Search the database pages:
 
 |  | Publication information Conrad, T.A. 1853. A synopsis of the family of Naïades of North America, with notes, and a table of some of the genera and sub-genera of the family, according to their geographical distribution, and descriptions of genera and sub-genera. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 243-269. Click here for online access. Attributed Genus Names
  | Pleiodon Conrad, 1834
    Conrad, 1834, Jour. Acad. Nat. Sci. 7(1): 178.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 (renamed Pliodon Agassiz, 1846)
 Type species: Pleiodon macmurtriei Conrad, 1834 (monotypy) = Pleiodon ovatus
 |  | Plectomerus Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 Type species: Unio trapezoides Lea, 1831 (sub. desig. by Ortmann & Walker, 1922: 9) = Plectomerus dombeyanus
 |  | Uniomerus Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 268.
 (intro'd as sub-gen. of Unio Retzius, 1788)
 Type species: Unio declivis Say, 1831 (sub. desig. by Frierson, 1927: 34, 10) = Uniomerus declivis
 |  | Caelatura Conrad, 1853
    ‘Conrad’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267 [as ‘Cælatura’].
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 820 [as ‘Cælatura’].
 Pallary, 1909, Mém. Inst. Égypte 6(1): 76.
 Simpson, 1914, Descr. Cat. Naiades: 1019.
 Germain, 1918, Bull. Mus. Hist. Nat. 24: 41.
 Germain, 1919, Bull. Mus. Hist. Nat. 25: 122.
 Germain, 1921, Faun. malac. Terr. e Fluv. Iles Mascareignes: 403.
 Pallary, 1924, Mém. Inst. Égypte 7 (n.s.): 42.
 Pilsbry & Bequaert, 1927, Bull. AMNH 53: 399.
 Haas, 1927, Senckenbergiana 9: 21.
 Haas, 1929, Senckenbergiana 11: 111.
 Bloomer, 1932, Proc. Malac. Soc. London 20: 168.
 Thiele, 1934, Handb. Syst. Weichtierk. 3: 1248.
 Haas, 1936, Abh. Senckenb. Naturf. Ges. 431: 54.
 Dartevelle & Schwetz, 1937, Ann. Soc. Roy. Zool. Belgique 68: 60.
 Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 140.
 Modell, 1942, Arch. Moll. 74(5/6): 190.
 Bloomer, 1946, Proc. Malac. Soc. London 27: 68.
 Bloomer, 1949, Proc. Malac. Soc. London 27: 241.
 Franc, 1949, J. de Conch. 9: 158.
 Leloup, 1950, Res. Sci. Explor. Hydrob. Lac Tanganyika (1946-1947) 3: 40.
 Mongin, 1963, Mém. Soc. Géol. France 96: 10.
 Modell, 1964, Arch. Moll. 93: 116.
 Mandahl-Barth, 1968, Expl. Hydrobiol. Bangweulu-Luapula 12: 51.
 Starobogatov, 1970, Fauna Moll. Continent.: 64.
 Fischer-Piette & Métivier, 1974, Bull. Mus. Hist. Nat. 133: 10.
 Appleton, 1979, Ann. S. Afr. Mus. 77(9): 154.
 Kenmuir, 1980, Trans. Zimbabwe Sci. Assoc. 60(2): 7.
 Curtis & Appleton, 1987, Jour. SWA Sci. Soc. 40-41: 50.
 Ibrahim et al., 1999, EEAA Nat. Biodiv. Unit (10): 74.
 Millard, 2001, Class. Moll. (3): 1061.
 (incorrect original spelling of Coelatura Conrad, 1853)
 |  | Parreysia Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 Type species: Unio multidentatus Philippi, 1847 (orig. desig.) = Parreysia corrugata
 |  | Lanceolaria Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 (intro'd as sub-gen. of Unio Retzius, 1788)
 Type species: Unio grayanus Lea, 1834 (orig. desig.) = Lanceolaria grayii
 |  | Corrugaria Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267. [nomen nudum]
 (intro'd as sub-gen. of Unio Retzius, 1788)
 |  | Monodontina Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 269.
 Type species: Margaritana vondembuschiana Lea, 1840 (orig. desig.) = Pseudodon vondembuschianus
 |  | Eurinea Conrad, 1853
    ‘Raf., Agas.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 (error for Eurynia Rafinesque, 1820)
 |  | Glebula Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 268.
 (intro'd as sub-gen. of Unio Retzius, 1788)
 Type species: Unio rotundata Lamarck, 1819 (orig. desig.) = Glebula rotundata
 |  | Iridella Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267. [nomen nudum]
 |  | Coelatura Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 268 [as ‘Clatura’].
 (correct name for Caelatura Conrad, 1853)
 Type species: Unio aegyptiacus Cailliaud, 1827 (monotypy) = Coelatura aegyptiaca
 |  | Hyriopsis Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 Type species: Unio delphinus Gruner, 1841 (monotypy) = Hyriopsis bialata
 |  | Nodularia Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 (renamed Nodularidia Cockerell, 1901)
 Type species: Unio douglasiae Griffith & Pidgeon, 1833 (orig. desig.) = Nodularia douglasiae
 |  | Cucumaria Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267.
 (homonym of Blainville, 1830 [Echin.])
 Type species: Unio cucumoides Lea, 1840 (orig. desig.) = Cucumerunio novaehollandiae
 |  Attributed Species Names
  | Anodonta pennsylvanica Stark, 1828
   ‘Lamarck’  of Authors.
 Stark, 1828, Elements Nat. Hist. 2: 89.
 Lea, 1836, Synopsis Fam. Naiades: 50.
 Lea, 1838, Synopsis Fam. Naiades: 30.
 Lea, 1852, Synopsis Fam. Naiades: 49.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263.
 Sowerby, 1867, Conch. Icon. 17: pl. 11, sp. 30.
 Lea, 1870, Synopsis Fam. Naiades: 79.
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 618.
 Ortmann & Walker, 1922, Occ. Pap. Mus. Zool. Univ. Mich. (112): 40.
 Frierson, 1927, Check List N. Amer. Naiades: 22 [as ‘Strophitus undulatus-pennsylvanicus’].
 Haas, 1969, Das Tierreich 88: 373 [as ‘Strophitus undulatus pennsylvanicus’].
 (error for Anodonta pensylvanica Lamarck, 1819)
 |  | Unio metanever Lea, 1829
   ‘Rafinesque’  of Authors.
 Lea, 1829, Trans. Amer. Phil. Soc. 3 [O. 1]: 418.
 Jay, 1835, Cat. Rec. Shells: 17.
 Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 179.
 Agassiz, 1852, Arch. Naturg. 18(1): 48.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 Mörch, 1853, Cat. Conch. Yoldi 2: 44.
 Lewis, 1871, Amer. J. Conch. 6: 218.
 Lea, 1871, Proc. Acad. Nat. Sci. 23: 15 [as ‘Margarita (Unio) metanever’].
 (reference to Obliquaria (Quadrula) metanevra Rafinesque, 1820)
 |  | Unio egyptiaca Deshayes, 1832
   ‘Cailliaud’  of Authors.
 Deshayes, 1832, Enc. Méth. 2 (Deuxième partie): 587.
 Jay, 1836, Cat. Rec. Shells: 20 [as ‘egyptiacus’].
 Lea, 1836, Synopsis Fam. Naiades: 29.
 Lea, 1838, Synopsis Fam. Naiades: 21 [as ‘egyptiacus’].
 Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 198 [as ‘egyptiacus’].
 Lea, 1852, Synopsis Fam. Naiades: 32 [as ‘Margaron (Unio) egyptiacus’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 267 [as ‘egyptiacus’].
 Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 494 [as ‘egyptiacus’].
 Lea, 1870, Synopsis Fam. Naiades: 50.
 Haas, 1940, Zool. Ser. Field Mus. Nat. Hist. 24: 140 [as ‘Caelatura egyptiaca’].
 Araujo et al., 2017, Zool. J. Linn. Soc. 179(2): 280.
 (error for Unio aegyptiacus Cailliaud, 1827)
 |  | Unio arcus Conrad, 1834
  Conrad, 1834, Amer. J. Sci. 25(2): 340, pl. 1, fig. 8.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 245.
 Type(s): HOLOTYPE ANSP_56784, Alabama.
 |  | Unio infucatus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 45, pl. 3, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 |  | Unio penitus Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 33, pl. 5, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 Type(s): HOLOTYPE ANSP_59860, Alabama.
 |  | Unio trabalis Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 27, pl. 3, fig. 5.
 Conrad, 1840, Monogr. Fam. Unionidae 2(12): 110, pl. 60, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 259.
 Type(s): HOLOTYPE ANSP_56481, Flint River, Ala.
 |  | Unio oviformis Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 46, pl. 3, fig. 6.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 |  | Unio furvus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 39, pl. 6, fig. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 |  | Unio perovatus Conrad, 1834
  Conrad, 1834, Amer. J. Sci. 25(2): 338, pl. 1, fig. 3.
 Conrad, 1834, New Fresh-Water Shells: 47, pl. 2, fig. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 Type(s): LECTOTYPE ANSP_129864, [no locality available - North America].
 |  | Unio rubellus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 38, pl. 6, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 |  | Unio prasinus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 44, pl. 3, fig.1.
 Conrad, 1837, Monogr. Fam. Unionidae 1(9): 79, pl. 44, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 |  | Unio modioliformis Lea, 1834
   ‘Say’  of Authors.
 Lea, 1834, Trans. Amer. Phil. Soc. 5 [O. 1]: 89.
 Conrad, 1835, Monogr. Fam. Unionidae 1(1): 5.
 Ferussac, 1835, Mag. Zool. 5: 28.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 246.
 (intro'd as syn of Unio clava Lamarck, 1819)
 |  | Unio greenii Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 32, pl. 4, fig. 1.
 Conrad, 1837, Monogr. Fam. Unionidae 1(8): 69, pl. 38, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 Type(s): SYNTYPE USNM_84950, [Black Warrior River] Alabama.
 |  | Unio maculatus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 30, pl. 4, fig. 4.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 (homonym of Unio (Elliptio) nigra var. maculata Rafinesque, 1820; renamed Pleurobema conradi Vanatta, 1915)
 |  | Unio cor Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 28, pl. 3, fig. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 247.
 Type(s): FIGURED SYNTYPE MCZ_178792, Elk and Flint Rivers, Alabama.
 |  | Unio caelatus Conrad, 1834
    Conrad, 1834, Amer. J. Sci. 25(2): 338, pl. 1, fig. 1 [as ‘clatus’].
 Conrad, 1834, New Fresh-Water Shells: 29, pl. 3, fig. 4 [as ‘cælatus’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 245 [as ‘cælatus’].
 (correct name for Unio coelatus Conrad, 1834)
 |  | Unio torulosus Conrad, 1834
    ‘Rafinesque’ Conrad, 1834, New Fresh-Water Shells: 72.
 ‘Raf.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 259.
 (reference to Amblema torulosa Rafinesque, 1820)
 |  | Unio nervosa Conrad, 1834
   ‘Rafinesque’  of Authors.
 Conrad, 1834, New Fresh-Water Shells: 70.
 Say, 1834, Amer. Conch. 6: ??.
 Lapham, 1852, Trans. WI Agri. Soc. 2: 369.
 Agassiz, 1852, Arch. Naturg. 18(1): 48.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 (misidentified reference to Unio (Leptodea) nervosa Rafinesque, 1820)
 |  | Anodonta declivis Conrad, 1834
    Conrad, 1834, Amer. J. Sci. 25(2): 341, pl. 1, fig. 11.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263.
 |  | Unio alabamensis Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 67.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 (new name for Symphynota inflata Lea, 1831)
 |  | Alasmodonta radiata Conrad, 1834
  Conrad, 1834, Amer. J. Sci. 25(2): 341, pl. 1, fig. 10.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus radiatus’].
 Type(s): LECTOTYPE ANSP_41147, Greene Co., Ala.
 |  | Anodonta teres Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 47, pl. 7, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 |  | Unio laevigatus Say, 1834
   ‘Rafinesque’  of Authors.
 Say, 1834, Amer. Conch. 6: [no pagination].
 Conrad, 1834, New Fresh-Water Shells: 70.
 Ferussac, 1835, Mag. Zool. 5: 28.
 Lea, 1836, Synopsis Fam. Naiades: 59.
 Lea, 1852, Synopsis Fam. Naiades: 57.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
 Ortmann, 1921, Mem. Carnegie Mus. 8: 92.
 (error for Unio (Aximedia) levigata Rafinesque, 1820)
 |  | Unio masoni Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 34, pl. 5, fig. 2.
 Conrad, 1836, Monogr. Fam. Unionidae 1(3): 28, pl. 12, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 |  | Unio lienosus Conrad, 1834
  Conrad, 1834, Amer. J. Sci. 25(2): 339, pl. 1, fig. 4.
 Conrad, 1836, Monogr. Fam. Unionidae 1(7): 60, pl. 34, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
 Type(s): HOLOTYPE ANSP_9747, Alabama R., Ala.
 |  | Unio stramineus Conrad, 1834
    Conrad, 1834, Amer. J. Sci. 25(2): 339, pl. 1, fig. 6.
 Conrad, 1834, New Fresh-Water Shells: pl. 7, fig. 1.
 Conrad, 1838, Monogr. Fam. Unionidae 1(10): 91, pl. 50, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 258.
 |  | Unio tenebrosus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 42, pl. 7, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 258.
 |  | Unio delumbis Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 35, pl. 5, fig. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 248.
 |  | Unio arctatus Conrad, 1834
    Conrad, 1834, Amer. J. Sci. 25(2): 340, pl. 1, fig. 9.
 Conrad, 1834, New Fresh-Water Shells: 36, pl. 5, fig. 4.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 245.
 |  | Unio raveneli Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 39, pl. 6, fig. 4.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 256.
 (renamed Margarita (Unio) watereensis Lea, 1836)
 Type(s): SYNTYPE ANSP_41370, So. Carolina.
 |  | Unio vibex Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 31, pl. 4, fig. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 Type(s): UNKNOWN ANSP_56488, Black Warrior River, Ala.
 |  | Unio nebulosus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 28, pl. 3, fig. 7.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 |  | Unio taeniatus Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 26, pl. 4, fig. 2 [as ‘tæniatus’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 258 [as ‘tæniatus’].
 Type(s): HOLOTYPE ANSP_56441, Flint River, Ala.
 |  | Unio pectorosus Conrad, 1834
    Conrad, 1834, New Fresh-Water Shells: 37, pl. 6, fig. 1.
 Conrad, 1836, Monogr. Fam. Unionidae 1(3): 25, pl. 11, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 |  | Unio perovalis Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 43, pl. 2, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 Type(s): HOLOTYPE ANSP_56416, Alabama R.
 |  | Unio altilis Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 43, pl. 2, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 244.
 Type(s): HOLOTYPE ANSP_56419, Ogeechee R., Ga.
 |  | Unio icterinus Conrad, 1834
  Conrad, 1834, New Fresh-Water Shells: 41, pl. 6, fig. 5.
 Conrad, 1836, Monogr. Fam. Unionidae 1(4): 39, pl. 18, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 Type(s): HOLOTYPE ANSP_41381, muddy shore, Savannah River, opposite Augusta [Richmond Co.], Georgia.
 |  | Anodonta subvexa Conrad, 1834
    Conrad, 1834, Amer. J. Sci. 25(2): 341, pl. 1, fig. 1.
 Conrad, 1834, New Fresh-Water Shells: 73.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 |  | Unio ligamentinus Deshayes, 1835
    Deshayes, 1835, Hist. Natur. Anim. sans Vert. 6: ??.
 ‘Lamarck’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251. [in part]
 (misidentified reference to Unio ligamentina Lamarck, 1819)
 |  | Unio fasciatus Conrad, 1835
    ‘Raf.’ Conrad, 1835, Monogr. Fam. Unionidae 1(1): 3, pl. 1.
 ‘Raf.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 249.
 (reference to Unio (Elliptio) fasciata Rafinesque, 1820)
 |  | Unio fragosus Conrad, 1835
    Conrad, 1835, Monogr. Fam. Unionidae 1(1): 12, pl. 6, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 249.
 |  | Unio mortoni Conrad, 1835
  Conrad, 1835, Monogr. Fam. Unionidae 1(1): 11, pl. 6, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 Type(s): HOLOTYPE ANSP_10287A, Bayou Teche, Louisiana.
 |  | Unio phillipsii Conrad, 1835
  Conrad, 1835, Monogr. Fam. Unionidae 1(1): 9, pl. 5, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 Type(s): HOLOTYPE ANSP_19432, Wabash R., Indiana.
 |  | Unio subinflatus Conrad, 1835
  Conrad, 1835, New Fresh-Water Shells, Appendix: 5, pl. 9, fig. 2.
 Conrad, 1838, Monogr. Fam. Unionidae 2(11): 97, pl. 54, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 258.
 Type(s): SYNTYPE ANSP_119985, Augusta, Ga.
 |  | Unio coccineus Conrad, 1836
  ‘Hildreth’ Conrad, 1836, Monogr. Fam. Unionidae 1(3): 29, pl. 13, fig. 1.
 ‘Hildreth’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 247.
 Type(s): FIGURED SYNTYPE USNM_85848, Columbus, Ohio.
 |  | Unio catillus Conrad, 1836
    Conrad, 1836, Monogr. Fam. Unionidae 1(3): 30, pl. 13, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 246.
 |  | Alasmodonta truncata Lea, 1836
   ‘Say, in lit.’  of Authors.
 Lea, 1836, Synopsis Fam. Naiades: 44.
 Lea, 1838, Synopsis Fam. Naiades: 27.
 Agassiz, 1852, Arch. Naturg. 18(1): 46.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 262.
 (intro'd as syn of Alasmidonta marginata Say, 1818)
 |  | Unio occidentalis Conrad, 1836
    Conrad, 1836, Monogr. Fam. Unionidae 1(7): 64, pl. 36, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 Type(s): TYPE LOST ANSP_UNKNOWN, Currant River, Arkansas.
 |  | Unio pumilis Lea, 1836
   ‘Lea’  of Authors.
 Lea, 1836, Synopsis Fam. Naiades: 20.
 Lea, 1838, Synopsis Fam. Naiades: 17.
 Lea, 1852, Synopsis Fam. Naiades: 24.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 (error for Unio pumilus Lea, 1838)
 |  | Anodonta virgata Conrad, 1836
    Conrad, 1836, Monogr. Fam. Unionidae 1(5): back cover.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus virgatus’].
 |  | Unio intermedius Conrad, 1836
  Conrad, 1836, Monogr. Fam. Unionidae 1(7): 63, pl. 35, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 Type(s): LECTOTYPE ANSP_41606, Nolachucky R., Tenn.
 |  | Unio productus Conrad, 1836
  Conrad, 1836, Monogr. Fam. Unionidae 1(3): 31, pl. 14, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 Type(s): HOLOTYPE ANSP_41397, [no locality available - North America].
 |  | Anodonta imbecilis Lea, 1836
   ‘Say’  of Authors.
 Lea, 1836, Synopsis Fam. Naiades: 54.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 502.
 Say, 1858, [in] Binney, Compl. Writings T. Say: 140.
 Lapham, 1860, Proc. Acad. Nat. Sci. 12: 156.
 B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [7].
 Pilsbry & Rhoads, 1896, Proc. Acad. Nat. Sci. 48: 506.
 Clench & Turner, 1956, Bull. Fla. State Mus. 1: 187.
 Murray & Leonard, 1962, Handbk. Unionid Muss. Kansas: 95.
 R.I. Johnson, 1970, Bull. MCZ 140(6): 362.
 Heard, 1975, Malacologia 15(1): 84.
 Kat, 1983, Malacologia 23(2): 362.
 Hoeh, 1990, Malac. Review 23: 63.
 Lydeard et al., 1996, Philos. Trans. Roy. Soc. London (B, Biol. Sci.) 351: 1595.
 Rosenberg et al., 1997, J. Moll. Studies 63: 303.
 Adamkewicz et al., 1997, MBE 14(6): 622.
 (error for Anodonta imbecillis Say, 1829)
 |  | Unio niger Conrad, 1836
    ‘Rafinesque’ Conrad, 1836, Monogr. Fam. Unionidae 1(6): 49, pl. 46.
 ‘Rafinesque’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 (reference to Unio (Elliptio) nigra Rafinesque, 1820)
 |  | Unio subplanus Conrad, 1837
    Conrad, 1837, Monogr. Fam. Unionidae 1(9): 73, pl. 41, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 258.
 |  | Unio rudis Conrad, 1837
    Conrad, 1837, Monogr. Fam. Unionidae 1(8): 76, pl. 43, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 (new name for Unio ravenelianus Lea, 1834)
 |  | Unio collinus Conrad, 1837
  Conrad, 1837, Monogr. Fam. Unionidae 1(8): 65, pl. 36, fig. 2.
 Conrad, 1840, Monogr. Fam. Unionidae 2(12): 109, pl. 60, figs. 3.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 247.
 Type(s): LECTOTYPE ANSP_41007, Rockbridge Co., Va.
 |  | Unio plexus Conrad, 1838
  Conrad, 1838, Monogr. Fam. Unionidae 1(10): 89, pl. 49, figs. 1-2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 Type(s): LECTOTYPE ANSP_129923, Vera Cruz, Mexico.
 |  | Unio lienosus variety constrictus Conrad, 1838
  Conrad, 1838, Monogr. Fam. Unionidae 1(10): 91, pl. 49, fig. 4.
 Conrad, 1838, Monogr. Fam. Unionidae 2(11): back cover correginda [as ‘Unio constrictus’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 247 [as ‘Unio constrictus’].
 (intro'd as intra-sp. of Unio lienosus Conrad, 1834)
 Type(s): HOLOTYPE ANSP_56465A, North River, Rockbridge Co., Va.
 |  | Unio pullus Conrad, 1838
    Conrad, 1838, Monogr. Fam. Unionidae 2(11): 100, pl. 55, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 |  | Unio excultus Conrad, 1838
    Conrad, 1838, Monogr. Fam. Unionidae 2(11): 99, pl. 55, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 249.
 |  | Unio saxeus Conrad, 1838
    Conrad, 1838, Monogr. Fam. Unionidae 2(11): back cover.
 Conrad, 1840, Monogr. Fam. Unionidae 2(12): 109, pl. 60, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 |  | Unio cerinus Conrad, 1838
  Conrad, 1838, Monogr. Fam. Unionidae 2(11): 95, pl. 52.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 246.
 Type(s): LECTOTYPE ANSP_41644, New Orleans, La.
 |  | Unio planilateris Conrad, 1838
    Conrad, 1838, Monogr. Fam. Unionidae 2(11): back cover.
 Conrad, 1840, Monogr. Fam. Unionidae 2(12): 103, pl. 57, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255 [as ‘planitaleris’].
 |  | Unio latiradiatus Conrad, 1838
    Conrad, 1838, Monogr. Fam. Unionidae 2(11): 96, pl. 53.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
 (new name for Unio interruptus Lea, 1838)
 |  | Quadrula lachrymosa Swainson, 1840
  ‘Lea’  of Authors.
 Swainson, 1840, Treat. Malacol.: 378.
 Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 177.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 256.
 Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 497.
 Reeve, 1864, Conch. Icon. 16: pl. 9, sp. 33.
 Call, 1895, Trans. Acad. Sci. St. Louis 7: 21.
 F.C. Baker, 1898, Bull. Chicago Acad. Sci. 3(1): 83, pl. 25, fig. 1; pl. 12, fig. 2.
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 776.
 Call, 1900, Ind. Dept. Geol. Nat. Res. (1899): 489.
 Ortmann, 1909, Nautilus 22(10): 100.
 Ortmann, 1909, Ann. Carnegie Mus. 5: 199.
 Ortmann, 1910, Nautilus 23(11): 140.
 Ortmann, 1910, Nautilus 23: 116.
 Ortmann, 1912, Ann. Carnegie Mus. 8: 253.
 Simpson, 1914, Descr. Cat. Naiades: 839, 841.
 Vanatta, 1915, Proc. Acad. Nat. Sci. 67: 556.
 Ortmann & Walker, 1922, Occ. Pap. Mus. Zool. Univ. Mich. (112): 14, 16.
 Frierson, 1927, Check List N. Amer. Naiades: 47.
 F.C. Baker, 1928, Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 84.
 R.I. Johnson, 1980, Bull. MCZ 149(2): 90.
 Vidrine, 1993, Histr. Distr. Freshw. Mussels LA: 53.
 Strayer & Jirka, 1997, Pearly Mussels NY (26): 98.
 (error for Unio lacrymosus Lea, 1828)
 |  | Unio nodiferus Conrad, 1841
  Conrad, 1841, Proc. Acad. Nat. Sci. 1: 19.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 277, pl. 38, figs. 4, 8.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 Type(s): LECTOTYPE ANSP_10285, Jackson, La.
 |  | Unio perplicatus Conrad, 1841
  Conrad, 1841, Proc. Acad. Nat. Sci. 1: 19.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 276, pl. 38, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus perplicatus’].
 Type(s): HOLOTYPE ANSP_129919, Jackson, Miss.
 |  | Margaritana curreyana Lea, 1842
  ‘Lea’  of Authors.
 Lea, 1842, Trans. Amer. Phil. Soc. 8 [O. 3]: pl. 18, fig. 40.
 Agassiz, 1852, Arch. Naturg. 18(1): 47.
 Lea, 1852, Synopsis Fam. Naiades: 42.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263.
 Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 499.
 Sowerby, 1868, Conch. Icon. 16: pl. 63, sp. 319.
 Lea, 1870, Synopsis Fam. Naiades: 68.
 B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [6].
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 661.
 Simpson, 1914, Descr. Cat. Naiades: 474.
 Frierson, 1927, Check List N. Amer. Naiades: 21.
 Haas, 1969, Das Tierreich 88: 395.
 (error for Margaritana curreyiana Lea, 1840)
 |  | Unio zieglerianus Hanley, 1843
   ‘Lea’  of Authors.
 Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 193.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 Lea, 1870, Synopsis Fam. Naiades: 45.
 (error for Unio zeiglerianus Lea, 1838)
 |  | Margaritana etowaensis Conrad, 1849
    Conrad, 1849, Proc. Acad. Nat. Sci. 4: 154 [as ‘etowænsis’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus etowaosis’].
 |  | Unio nucleopsis Conrad, 1849
  Conrad, 1849, Ann. Mag. Nat. Hist. 4: 301.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 8.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 Type(s): SYNTYPES ANSP_41421, Etowah River, Ga.
 |  | Unio plectophorus Conrad, 1849
    Conrad, 1849, Proc. Acad. Nat. Sci. 4: 154 [as ‘plectrophorus’].
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 7.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus plectophorus’].
 (correct name for Unio plectrophorus Conrad, 1849)
 |  | Unio securiformis Conrad, 1849
    Conrad, 1849, Proc. Acad. Nat. Sci. 4: ??.
 Conrad, 1849, Ann. Mag. Nat. Hist. 4: 300.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 275, pl. 37, fig. 1.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 |  | Unio limatulus Conrad, 1849
    Conrad, 1849, Proc. Acad. Nat. Sci. 4: 154.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
 |  | Unio stagnalis Conrad, 1849
  Conrad, 1849, Ann. Mag. Nat. Hist. 4: 300.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 275, pl. 37, fig. 2.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 Type(s): HOLOTYPE MCZ_178778, Ogeechee River, Georgia.
 |  | Unio ogeecheensis Conrad, 1849
  Conrad, 1849, Ann. Mag. Nat. Hist. 4: 300.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 275, pl. 37, figs. 3-4.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 Type(s): LECTOTYPE MCZ_146971, Ogeechee River, Georgia.
 |  | Unio oratus Conrad, 1849
    Conrad, 1849, Ann. Mag. Nat. Hist. 4: 301.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 6.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 |  | Unio contrarius Conrad, 1849
    Conrad, 1849, Proc. Acad. Nat. Sci. 4: 153.
 Conrad, 1850, Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 7.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 247.
 |  | Unio metaneurus Herrmannsen, 1849
   ‘Rafinesque’  of Authors.
 Herrmannsen, 1849, Ind. Gener. Malacol. 2: 571.
 Küster, 1852, Conchyl. Cab. 9(2): 50.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 Thiele, 1934, Handb. Syst. Weichtierk. 3: 826 [1260] [as ‘Quadrula (Theliderma) metaneura’].
 (error for Obliquaria (Quadrula) metanevra Rafinesque, 1820)
 |  | Unio aberti Conrad, 1850
    Conrad, 1850, Proc. Acad. Nat. Sci. 5: 10.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 244.
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 295, pl. 26, fig. 1.
 |  | Unio mississippiensis Conrad, 1850
  Conrad, 1850, Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 11.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 Type(s): HOLOTYPE MCZ_178777, Tributary of the Lower Mississippi, Louisiana.
 |  | Unio hippopaeus Lea, 1852
   ‘Lea’  of Authors.
 Lea, 1852, Synopsis Fam. Naiades: 21 [as ‘hippopæus’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 261 [as ‘hippopæus’].
 Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 497 [as ‘hippopæus’].
 Reeve, 1864, Conch. Icon. 16: pl. 11, sp. 40 [as ‘hippopæus’].
 Lea, 1870, Synopsis Fam. Naiades: 31 [as ‘hippopæus’].
 B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [3], [as ‘hippopæus’].
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 767 [as ‘hippopæa’].
 Ortmann, 1909, Nautilus 22(10): 101 [as ‘Q. hippopæa’].
 Ortmann, 1909, Ann. Carnegie Mus. 5: 203 [as ‘Quadrula undulata hippopæa’].
 Simpson, 1914, Descr. Cat. Naiades: 816 [as ‘hippopæa’].
 Frierson, 1927, Check List N. Amer. Naiades: 61.
 Haas, 1969, Das Tierreich 88: 287.
 Clarke, 1973, Malacologia 13(1-2): 35.
 Burch, 1975, Freshw. Unio. North Amer.: 165.
 Strayer & Jirka, 1997, Pearly Mussels NY (26): 98.
 He & Zhuang, 2013, Freshwater Bivalves China: 27.
 (error for Unio hippopoeus Lea, 1845)
 |  | Unio reevianus Conrad, 1853
   ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 256.
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 538.
 Simpson, 1914, Descr. Cat. Naiades: 74.
 Utterback, 1916, Amer. Midl. Nat. 4(10): 449.
 Frierson, 1927, Check List N. Amer. Naiades: 73.
 Haas, 1969, Das Tierreich 88: 437.
 R.I. Johnson, 1980, Bull. MCZ 149(2): 132.
 Oesch, 1984, Missouri Naiades: 225.
 Turgeon et al., 1988, Am. Fisher. Soc. Spec. Publ. (16): 31.
 Williams et al., 1993, Fisheries 18(9): 12.
 Turgeon et al., 1998, Am. Fisher. Soc. Spec. Publ. (26): 35.
 Graf & Cummings, 2007, J. Moll. Studies 73: 305.
 Bogan, 2010, FADA: [web].
 Cummings & Graf, 2010, Ecol. Class. N. Amer. FW Inverts.: 376.
 Haag, 2012, N. Amer. Freshw. Mussels: 71 [as ‘Lampsilis reeviana’].
 (error for Unio reeveianus Lea, 1852)
 |  | Unio notatus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 (reference to Unio notatus Lea, 1838)
 |  | Unio fasciolus Conrad, 1853
    ‘Raf.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 249.
 (misidentified reference to Lampsilis fasciola Rafinesque, 1820)
 |  | Unio obovalis Conrad, 1853
    ‘Rafinesque’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 253.
 (misidentified reference to Obovaria obovalis Rafinesque, 1820)
 |  | Anodonta linneana Conrad, 1853
   ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 Hanley, 1856, Cat. Rec. Bivalve Shells, Suppl.: 387.
 Sowerby, 1870, Conch. Icon. 17: pl. 35, sp. 144.
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 646.
 Simpson, 1914, Descr. Cat. Naiades: 431.
 Frierson, 1927, Check List N. Amer. Naiades: 14.
 Haas, 1969, Das Tierreich 88: 364.
 Parmalee & Bogan, 1998, The Freshwater Mussels of Tennessee: 206.
 Watters et al., 2009, Freshw. Mussels OH: 260.
 (error for Anodonta linnaeana Lea, 1852)
 |  | Unio vibex Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 (misidentified reference to Unio vibex Conrad, 1834)
 |  | Unio paludicolor Conrad, 1853
    ‘Gould’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 (error for Unio paludicolus Gould, 1845)
 |  | Unio hanleyanus Conrad, 1853
  ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 Sowerby, 1866, Conch. Icon. 16: pl. 46, sp. 249.
 B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [3].
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 759.
 Simpson, 1914, Descr. Cat. Naiades: 780.
 Frierson, 1927, Check List N. Amer. Naiades: 42, sp. 175.
 Haas, 1969, Das Tierreich 88: 256.
 Burch, 1975, Freshw. Unio. North Amer.: 13.
 Turgeon et al., 1988, Am. Fisher. Soc. Spec. Publ. (16): 32.
 Williams et al., 1993, Fisheries 18(9): 13.
 Parmalee & Bogan, 1998, The Freshwater Mussels of Tennessee: 184.
 Lydeard et al., 1999, Gulf Mex. Sci. 17(2): 129.
 (error for Unio hanleyianus Lea, 1852)
 |  | Unio ruber Conrad, 1853
    ‘Rafinesque’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 (reference to Obliquaria rubra Rafinesque, 1820)
 |  | Anodonta marryattana Conrad, 1853
  ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 Sowerby, 1870, Conch. Icon. 17: pl. 28, sp. 111.
 Simpson, 1900, Proc. U.S. Nat. Mus. 22: 642.
 Simpson, 1914, Descr. Cat. Naiades: 422.
 F.C. Baker, 1928, Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 157.
 Haas, 1969, Das Tierreich 88: 365.
 (error for Anodonta maryattana Lea, 1840)
 |  | Monodontina buschiana Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 269.
 (new name for Margaritana vondembuschiana Lea, 1840)
 |  | Unio rivularis Conrad, 1853
  ‘Say’ Conrad, 1836, Monogr. Fam. Unionidae 1(5): 45, pl. 23, fig. 1 [as ‘U. declivis’].
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 296.
 Type(s): HOLOTYPE ANSP_42852, small creek in Greene Co., Ala.
 |  | Unio carolinanus Conrad, 1853
    ‘Bosc’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 246.
 (error for Unio caroliniana Bosc, 1801)
 |  | Unio eastbrookianus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 248.
 (error for Unio estabrookianus Lea, 1845)
 |  | Unio hayesianus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 250.
 (error for Unio haysianus Lea, 1834)
 |  | Unio leseurianus Conrad, 1853
   ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
 Frierson, 1927, Check List N. Amer. Naiades: 56.
 (error for Unio lesueurianus Lea, 1840)
 |  | Unio moussianus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 252.
 (error for Unio moussonianus Lea, 1852)
 |  | Mytilus fluviatilus Conrad, 1853
    ‘Lister’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.
 (error for Mytilus fluviatilis Gmelin, 1791)
 |  | Unio planitaleris Conrad, 1853
    ‘Con.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255.
 (error for Unio planilateris Conrad, 1838)
 |  | Unio pygmoeus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 256 [as ‘pygmus’].
 (error for Unio pygmaeus Lea, 1852)
 |  | Unio vanuxemiensis Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 259.
 (error for Unio vanuxemensis Lea, 1838)
 |  | Unio vaughnianus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 259.
 Haag, 2012, N. Amer. Freshw. Mussels: 74 [as ‘Villosa vaughniana’].
 (error for Unio vaughanianus Lea, 1838)
 |  | Unio whiteanus Conrad, 1853
   ‘Lea’  of Authors.
 Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 Frierson, 1927, Check List N. Amer. Naiades: 28.
 (error for Unio whiteianus Lea, 1852)
 |  | Plectomerus boykianus Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 260.
 (error for Unio boykinianus Lea, 1840)
 |  | Strophitus etowaosis Conrad, 1853
    ‘Con.’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 263.
 (error for Margaritana etowaensis Conrad, 1849)
 |  | Anodonta harpenthis Conrad, 1853
    ‘Lea’ Conrad, 1853, Proc. Acad. Nat. Sci. 6: 264.
 (error for Anodonta harpethensis Lea, 1840)
 |  | Unio phillipsea Conrad, 1853
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 269.
 (error for Unio phillipsii Conrad, 1835)
 |  | Unio pectitus Conrad, 1854
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 255. [nomen nudum]
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 297, pl. 27, 4.
 |  | Unio velatus Conrad, 1854
    Conrad, 1853, Proc. Acad. Nat. Sci. 6: 259.
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 298, pl. 27, fig. 6.
 |  | Unio porrectus Conrad, 1854
  Conrad, 1853, Proc. Acad. Nat. Sci. 6: 268. [nomen nudum]
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 296, pl. 26, fig. 7.
 (homonym of Unio porrectus Sowerby, 1829; new name for Unio parallelus Conrad, 1841)
 Type(s): HOLOTYPE ANSP_42847, Jackson, Miss.
 |  | Unio subcroceus Conrad, 1854
  Conrad, 1853, Proc. Acad. Nat. Sci. 6: 268. [nomen nudum]
 Conrad, 1854, Jour. Acad. Nat. Sci. 2(4): 297, pl. 27, fig. 1.
 Type(s): HOLOTYPE ANSP_41406, Canadian Fork, Arkansas River.
 |  Taxonomic Opinions| 
	 Alasmodonta arcula (Lea, 1838)
	 Alasmodonta confragosa Say
	 Alasmodonta marginata (Say)
	+ Unio varicosa Lamarck, 1819
 + Unio rugulosus Wood, 1828
 + Alasmodonta truncata Lea, 1836
 Anodonta angulata Lea
	 Anodonta benedictensis Lea
	 Anodonta buchanensis Lea
	 Anodonta californiensis Lea
	 Anodonta cataracta Say
	+ Anodonta fluviatilis Bosc, 1801
 Anodonta cognata Gould
	 Anodonta couperiana Lea
	 Anodonta cylindracea Lea
	 Anodonta declivis Con., 1834
	+ Anodonta plana Lea, 1834
 Anodonta decora Lea
	 Anodonta denigrata Lea, 1852
	 Anodonta excurvata Dekay
	 Anodonta ferruginea Lea
	 Anodonta ferussaciana Lea
	 Anodonta footiana Lea
	 Anodonta fragilis Lam.
	 Anodonta gibbosa Say, 1824
	 Anodonta gigantea Lea
	 Anodonta glauca Valen.
	 Anodonta grandis Say, 1829
	+ Anodonta corpulenta Cooper, 1834
 Anodonta harpenthis [sic] Lea
	 Anodonta imbecilis [sic] Say, 1829
	+ Anodonta incerta Lea, 1834
 Anodonta implicata Say
	+ Anodonta newtonensis Lea, 1838
 Anodonta impura Say, 1829
	 Anodonta linneana [sic] Lea
	 Anodonta lugubris Say, 1829
	 Anodonta marginata Say
	 Anodonta marryattana [sic] Lea
	 Anodonta nuttalliana Lea
	 Anodonta oblita Lea, 1852
	 Anodonta opaca Lea, 1852
	 Anodonta oregonensis Lea
	 Anodonta ovata Lea
	 Anodonta pavonia Lea
	 Anodonta pepiniana Lea
	 Anodonta plicata Hald.
	 Anodonta salmonia Lea
	 Anodonta stewartiana Lea
	 Anodonta subcylindracea Lea
	 Anodonta suborbiculata Say
	 Anodonta subvexa Con.
	 Anodonta teres Con.
	 Anodonta virens Lea
	 Anodonta wahlamatensis Lea
	 Coelatura aegyptiacus Caill.
	 Complanaria complanata (Barnes)
	+ Unio katherinae Lea, 1838
 Complanaria compressa (Lea, 1832)
	+ Complanaria alasmodontina Stimpson, 1851
 Complanaria costata (Raf.)
	+ Alasmodonta rugosa Barnes, 1823
 Cucumaria cucumoides (Lea)
	 Hyriopsis delphinus (Gruner)
	 Leptodea lata Raf.
	+ Unio dehiscens Say, 1829
 + Unio oriens Lea, 1831
 Leptodea leptodon Raf.
	+ Unio planus Barnes, 1823
 + Anodon purpurascens Swainson, 1823
 + Symphynota tenuissima Lea, 1829
 Margaritana arcuata (Barnes)
	 Margaritana falcata Gould
	 Margaritana monodonta (Say)
	+ Unio soleniformis Lea, 1831
 Metaptera alata (Say)
	+ Metaptera megaptera Rafinesque, 1820
 Metaptera fragilis (Raf.)
	+ Unio fragilis Swainson, 1823
 + Unio gracilis Barnes, 1823
 Metaptera inflata (Lea)
	+ Unio alabamensis Conrad, 1834
 + Unio inflatus Conrad, 1836
 Metaptera ohiensis (Raf.)
	+ Symphynota laevissima Lea, 1829
 Monodontina buschiana (Con.)
	+ Margaritana vondembuschiana Lea, 1840
 Nodularia douglasiæ (Gray)
	 Parreysia multidentatus (Parreyss)
	 Plectomerus atromarginatus (Lea)
	 Plectomerus boykianus [sic] (Lea)
	 Plectomerus costatus (Raf.)
	+ Unio undulatus Barnes, 1823
 + Unio costatus Conrad, 1836
 + Unio latecostatus Lea, 1845
 Plectomerus crassidens (Lam.)
	+ Unio interruptus Say, 1831
 + Unio trapezoides Lea, 1831
 Plectomerus nicklinianus (Lea)
	 Plectomerus perplicatus (Con.)
	+ Unio atrocostatus Lea, 1845
 Plectomerus plectophorus (Con.)
	 Plectomerus plicatus (Say)
	+ Unio peruviana Lamarck, 1819
 + Unio rariplicata Lamarck, 1819
 + Unio crassus Barnes, 1823
 + Unio dombeyana Valenciennes, 1827
 + Unio hippopoeus Lea, 1845
 Plectomerus sloatianus (Lea)
	 Strophitus argentea (Lea)
	 Strophitus arkansensis (Lea)
	 Strophitus calceolus (Lea)
	 Strophitus curreyanus [sic] (Lea)
	 Strophitus deltoideus (Lea)
	 Strophitus edentulus (Say)
	+ Anodon areolatus Swainson, 1829
 Strophitus etowaosis [sic] (Con., 1849)
	 Strophitus fabula (Lea)
	 Strophitus hildrethianus (Lea)
	 Strophitus holstonia (Lea)
	 Strophitus minor (Lea)
	 Strophitus radiatus (Con.)
	 Strophitus ravenelianus (Lea)
	 Strophitus shæfferiana (Lea)
	 Strophitus tetragona (Lea, 1846)
	 Strophitus unadilla (Dekay)
	 Strophitus undulatus (Say)
	+ Anodonta pensylvanica Lamarck, 1819
 + Anodon rugosus Swainson, 1822
 Strophitus virgatus (Conrad, 1836)
	+ Anodonta wardiana Lea, 1838
 Unio (Cunicula) arcus Con., 1834
	 Unio (Cunicula) cælatus Con., 1834
	 Unio (Cunicula) eastbrookianus [sic] Lea, 1845
	 Unio (Cunicula) subtentus Say
	 Unio (Eurinea) [sic] jayensis Lea, 1838
	 Unio (Eurinea) [sic] lanceolatus Lea, 1832
	 Unio (Eurinea) [sic] productus Con.
	 Unio (Glebula) rotundatus Lam.
	+ Unio suborbiculata Lamarck, 1819
 + Obliquaria (Plagiola) decorticata Rafinesque, 1820
 + Unio glebulus Say, 1831
 + Unio subglobosus Lea, 1834
 Unio (Iridea) charruana D’Orb.
	 Unio (Iridea) fontainiana D’Orb.
	 Unio (Iridea) granosus Lam.
	 Unio (Iridea) guaraniana D’Orb.
	 Unio (Iridea) hylæa D’Orb.
	 Unio (Iridea) matoniana D’Orb.
	 Unio (Iridea) paranensis Lea
	 Unio (Iridea) psammoica D’Orb.
	 Unio (Iridea) rhuacoica D’Orb.
	 Unio (Iridea) solisiana D’Orb.
	 Unio (Lampsilis) dolabræformis Lea, 1838
	 Unio (Lampsilis) ovatus Say
	 Unio (Lanceolaria) grayanus Lea
	 Unio (Mysca) pictorum 
	 Unio (Theliderma) fragosus Con.
	 Unio (Theliderma) nobilis 
	 Unio (Theliderma) phillipsii Con.
	 Unio (Uniomerus) camptodon Say
	 Unio (Uniomerus) porrectus 
	 Unio (Uniomerus) sayii 
	 Unio (Uniomerus) subcroceus 
	 Unio (Uniomerus) symmetricus Lea, 1845
	 Unio abacus Hald.
	 Unio aberti Con., 1850
	+ Unio lamarckianus Lea, 1852
 Unio acutissimus Lea, 1834
	 Unio affinis Lea, 1852
	 Unio altilis Con.
	 Unio amygdalum Lea, 1846
	 Unio amœnus Lea, 1841
	 Unio angustatus Lea, 1832
	 Unio apiculatus Say, 1829
	+ Unio asper Jay, 1839
 Unio approximus Lea, 1845
	 Unio arctatus Con.
	 Unio arctior Lea, 1838
	 Unio argenteus Lea, 1841
	 Unio asper Lea, 1832
	 Unio barnesianus Lea, 1838
	 Unio barrattii Lea, 1852
	 Unio biangulatus Lea, 1841
	 Unio bigbyensis Lea, 1841
	 Unio binneyi Lea, 1845
	 Unio blandingianus Lea, 1834
	 Unio bournianus Lea, 1841
	 Unio boydianus Lea, 1841
	 Unio brumbyanus Lea, 1841
	 Unio buckleyi Lea, 1846
	 Unio buddianus Lea, 1846
	 Unio bullatus Raf., 1820
	+ Unio verrucosus albus Hildreth, 1828
 + Unio pustulosus Lea, 1831
 Unio buxeus Lea, 1852
	 Unio caliginosus Lea, 1845
	 Unio callosus Lea, 1841
	 Unio capax Green, 1832
	+ Symphynota globosa Lea, 1834
 Unio capsæformis Lea, 1834
	 Unio cardium Raf., 1820
	+ Unio ovata Lamarck, 1819
 + Unio ventricosus Barnes, 1823
 + Unio occidens Lea, 1829
 + Unio subovatus Lea, 1831
 Unio cariosus Say
	+ Unio ovata Valenciennes, 1827
 + Unio cariosus De Kay, 1843
 Unio carolinanus [sic] Bosc
	+ Unio obesus Lea, 1831
 Unio castaneus Lea, 1832
	 Unio catillus Conrad, 1836
	 Unio cerinus Con., 1838
	 Unio cicatricosus Say, 1829
	+ Unio varicosus Lea, 1831
 Unio cincinnatiensis Lea, 1841
	 Unio claibornensis Lea, 1838
	+ Unio obtusus Lea, 1840
 Unio clarkianus Lea, 1852
	 Unio clava Lamarck, 1819
	+ Pleurobema mytiloides Rafinesque, 1820
 + Obliquaria (Scalenaria) scalenia Rafinesque, 1820
 + Pleurobema cuneata Rafinesque, 1820
 + Unio modioliformis Lea, 1834
 + Unio clavus Conrad, 1835
 Unio coccineus ‘Hildreth’ MSS
	+ Unio coccineus Lea, 1838
 Unio collinus Con.
	 Unio complanatus Solander
	+ Unio violaceus Spengler, 1793
 + Unio purpureus Say, 1817
 + Unio coarctata Lamarck, 1819
 + Unio purpurascens Lamarck, 1819
 + Unio rhombula Lamarck, 1819
 + Unio carinifera Lamarck, 1819
 + Unio georgina Lamarck, 1819
 + Unio sulcidens Lamarck, 1819
 + Unio glabrata Lamarck, 1819
 + Unio rarisulcata Lamarck, 1819
 + Unio (Elliptio) aurata Rafinesque, 1820
 Unio compressissimus Lea, 1845
	 Unio concavus Lea, 1852
	 Unio congaræus Lea, 1832
	 Unio conradicus Lea, 1834
	 Unio constrictus Con.
	 Unio contrarius Con.
	 Unio cooperianus Lea, 1834
	 Unio cor Con.
	 Unio cordatus (Raf.)
	 Unio creperus Lea
	 Unio crocatus Lea, 1841
	 Unio cumberlandianus Lea, 1838
	+ Unio cumberlandicus Lea, 1838
 Unio cuneolus Lea, 1842
	 Unio cuvierianus Lea, 1852
	 Unio cylindricus Say
	+ Unio naviformis Lamarck, 1819
 + Unio (Eurynia) solenoides Rafinesque, 1820
 Unio cyphius [sic] Raf.
	+ Unio aesopus Green, 1827
 Unio cyrenoides Philippi, 1848
	 Unio dactylus Lea, 1841
	 Unio dariensis Lea, 1841
	 Unio decisus Lea, 1832
	 Unio declivis Say, 1831
	+ Unio geometricus Lea, 1834
 Unio decoratus Lea, 1852
	 Unio delumbis Con.
	+ Unio modioliformis Lea, 1834
 Unio dilatatus Raf.
	+ Unio nasuta Lamarck, 1819
 + Obliquaria (Ellipsaria) cuprea Rafinesque, 1820
 + Obliquaria (Ellipsaria) atroviolacea Rafinesque, 1820
 + Unio gibbosus Barnes, 1823
 Unio discus Lea, 1838
	 Unio dolabelloides Lea, 1842
	 Unio dorfeuillianus Lea, 1838
	 Unio dromas Lea, 1834
	+ Unio caperatus Lea, 1845
 Unio duttonianus Lea, 1841
	 Unio edgarianus Lea, 1841
	 Unio excultus Con.
	+ Margaron (Unio) declivis Lea, 1852
 Unio exiguus Lea, 1842
	 Unio famelicus Gould
	 Unio fasciatus [Raf.]
	+ Unio crassus Say, 1817
 + Unio carinatus Barnes, 1823
 + Unio ellipticus Barnes, 1823
 Unio fasciolaris Raf.
	+ Obliquaria (Ellipsaria) sinuata Rafinesque, 1820
 + Unio mucronatus Barnes, 1823
 + Unio phaseolus Hildreth, 1828
 + Unio cuneatus Hildreth, 1828
 + Unio planulatus Lea, 1829
 + Unio camelus Lea, 1834
 Unio fasciolus Raf.
	+ Unio subangulatus Lea, 1840
 Unio fatuus Lea
	 Unio fisherianus Lea, 1838
	+ Unio nasutus Conrad, 1838
 Unio flavescens Lea, 1845
	 Unio flavus Raf.
	+ Unio rubiginosus Lea, 1829
 + Unio flavus Conrad, 1837
 Unio flexuosus Raf.
	+ Unio foliatus Hildreth, 1828
 + Unio flexuosus Conrad, 1835
 Unio floridensis Lea, 1852
	 Unio folliculatus Lea, 1838
	 Unio forbesianus Lea, 1852
	 Unio foremanianus Lea, 1841
	 Unio fraternus Lea, 1852
	 Unio fulgidus Lea, 1845
	 Unio fuliginosus Lea, 1845
	 Unio furvus Con.
	+ Unio hanleyianus Lea, 1852
 + Unio troschelianus Lea, 1852
 Unio fuscatus Lea, 1846
	 Unio geddingsianus Lea, 1841
	 Unio georgianus Lea, 1841
	 Unio gibber Lea
	 Unio gibbesianus Lea, 1852
	 Unio glaber Lea, 1838
	 Unio glans Lea, 1832
	 Unio gouldii Lea, 1845
	 Unio graniferus Lea
	 Unio greenii Con.
	+ Unio simplex Lea, 1845
 Unio griffithianus Lea, 1834
	 Unio haleianus Lea, 1842
	 Unio hayesianus [sic] Lea, 1834
	 Unio hebes Lea, 1852
	 Unio heterodon Lea, 1833
	 Unio holstonensis Lea, 1841
	 Unio hopetonensis Lea, 1838
	 Unio hyalinus Lea, 1845
	 Unio hydianus Lea, 1838
	 Unio icterinus Con.
	+ Unio fulvus Lea, 1834
 Unio ineptus Lea, 1852
	 Unio infucatus Co.
	 Unio intermedius Con.
	 Unio interruptus Raf.
	+ Unio brevidens Lea, 1831
 + Unio interruptus Conrad, 1834
 Unio jejunus Lea, 1838
	 Unio keinerianus [sic] Lea, 1852
	+ Unio keinerianus Lea, 1852
 Unio kirtlandianus Lea, 1834
	 Unio kleinianus Lea, 1852
	 Unio lapillus Say, 1831
	+ Unio fabalis Lea, 1831
 Unio latiradiatus Con.
	+ Unio interruptus Lea, 1838
 Unio lazarus Lea, 1852
	 Unio lecontianus Lea, 1838
	 Unio lenior Lea, 1841
	 Unio leseurianus [sic] Lea, 1842
	 Unio lienosus Con.
	+ Unio obscurus Lea, 1838
 Unio ligamentinus Lam.
	+ Unio multiradiatus Lea, 1829
 + Unio fasciolus Say, 1834
 Unio limatulus Con., 1849
	+ Unio tuomeyi Lea, 1852
 Unio lineatus Lea, 1841
	 Unio lineolatus (Raf.)
	+ Obliquaria (Plagiola) depressa Rafinesque, 1820
 + Unio securis Lea, 1829
 Unio lugubris Lea
	 Unio luridus Lea
	 Unio luteolus Lam.
	+ Unio siliquoideus Barnes, 1823
 + Unio inflatus Barnes, 1823
 Unio lævigatus [sic] Raf.
	+ Unio lens Lea, 1831
 Unio maculatus Con., 1834
	 Unio masoni Con.
	 Unio menkianus Lea, 1838
	 Unio merus Lea, 1852
	 Unio metallicus Say, 1830
	+ Unio cuprinus Lea, 1831
 Unio metaneurus [sic] Raf.
	+ Unio nodosus Barnes, 1823
 + Unio rugosus Barnes, 1823
 Unio minor Lea, 1846
	 Unio mississippiensis Con.
	 Unio monroensis Lea, 1841
	 Unio mortoni Con., 1835
	+ Unio turgidus Lea, 1838
 Unio moussianus [sic] Lea, 1852
	 Unio mühlfeldianus Lea, 1838
	 Unio mœstus Lea, 1841
	 Unio nashvillianus Lea, 1834
	 Unio nasutus Say
	+ Unio rostrata Valenciennes, 1827
 + Unio nasutus Conrad, 1838
 Unio nebulosus Con.
	 Unio neglectus Lea, 1846
	 Unio nervosus Raf.
	+ Unio donaciformis Lea, 1828
 + Unio zigzag Lea, 1829
 + Unio nervosa Conrad, 1834
 Unio nexus Say, 1831
	+ Unio arcaeformis Lea, 1831
 Unio nigellus Lea
	 Unio niger Raf.
	+ Unio incrassatus Lea, 1840
 Unio nigerrimus Lea, 1852
	 Unio nigrinus Lea
	 Unio nitens Lea
	 Unio nodiferus Con.
	 Unio nodulatus Raf.
	+ Unio pustulatus Lea, 1831
 + Unio nodulatus Say, 1834
 Unio notatus Lea, 1838
	 Unio novi-eboraci Lea, 1838
	 Unio nucleopsis Con.
	 Unio obliquata (Raf.)
	+ Unio ridibundus Say, 1829
 + Unio sulcatus Lea, 1829
 Unio obliquus Lam.
	+ Unio ebenus Lea, 1831
 + Unio obliqua Ferussac, 1835
 + Unio (s.s.) mytiloides Swainson, 1840
 Unio obovalis Raf.
	+ Unio solidus Lea, 1838
 Unio obtusus Lea
	 Unio occidentalis Con.
	 Unio ochraceus Say
	+ Mytilus fluviatilis Gmelin, 1791
 + Lampsilis rosea Rafinesque, 1820
 + Lampsilis pallida Rafinesque, 1820
 + Unio rosaceus Conrad, 1849
 Unio ogeecheensis Con.
	 Unio olivarius Raf.
	+ Unio ellipsis Lea, 1828
 Unio oratus Con.
	 Unio orbiculatus Hild., 1828
	+ Unio abruptus Say, 1831
 + Margarita (Unio) orbiculatus Lea, 1836
 + Unio crassus Conrad, 1836
 Unio oviformis Con.
	 Unio paliatus Lea, 1845
	 Unio pallescens Lea, 1845
	 Unio paludicolor [sic] Gould
	 Unio papyraceus Gould
	 Unio parvus Barnes
	 Unio paulus Lea
	 Unio pectitus Con.
	 Unio pectorosus Con., 1834
	+ Unio perdix Lea, 1834
 Unio pellucidus Lea, 1845
	 Unio penitus Con.
	 Unio pernodosus Lea, 1845
	 Unio perovalis Con.
	 Unio perovatus Con.
	+ Unio nux Lea, 1852
 Unio personatus Say, 1829
	+ Unio pileus Lea, 1831
 + Unio capillaris Lea, 1834
 Unio perstriatus Lea, 1852
	 Unio pictus Lea, 1834
	 Unio pilaris Lea
	 Unio placitus Lea, 1852
	 Unio planitaleris [sic] Con.
	 Unio plenus Lea, 1842
	 Unio plexus Con., 1836
	+ Unio pliciferus Lea, 1838
 + Unio carbonarius Lea, 1838
 + Unio subtrapezius Philippi, 1847
 Unio politus Say
	+ Unio brevialis Lamarck, 1819
 + Unio brevialis Crouch, 1827
 + Unio subrotundus Lea, 1831
 Unio powellii Lea, 1852
	 Unio prasinus Con., 1834
	+ Unio schoolcraftensis Lea, 1834
 Unio prevostianus Lea, 1852
	 Unio proximus Lea, 1852
	 Unio pullus Con.
	 Unio pulvinulus Lea, 1845
	 Unio pumilis [sic] Lea, 1838
	 Unio puniceus Haldeman
	 Unio purpuratus Lam.
	+ Mya ventricosa Humphrey, 1797
 + Unio ater Lea, 1829
 + Unio lugubris Say, 1832
 + Unio atra Deshayes, 1832
 Unio purpuriatus Say, 1829
	+ Unio medellinus Lea, 1838
 Unio pusillus Lea
	 Unio pygmœus [sic] Lea
	 Unio quadrulus Raf.
	+ Unio lacrymosus Lea, 1828
 + Unio asperrimus Lea, 1831
 + Unio quadrulus Say, 1834
 Unio radiatus Lam.
	+ Mya pictorum tenuis Martini & Chemnitz, 1782
 + Unio virginiana Lamarck, 1819
 + Unio oblongatus Wood, 1828
 + Unio radiatus De Kay, 1843
 Unio rangianus Lea, 1838
	 Unio raveneli Conrad, 1834
	+ Unio confertus Lea, 1834
 + Margarita (Unio) watereensis Lea, 1836
 Unio rectus Lam.
	+ Unio (Eurynia) latissima Rafinesque, 1820
 + Unio praelongus Barnes, 1823
 + Unio rectus Conrad, 1836
 Unio reevianus [sic] Lea, 1852
	 Unio reflexus Raf.
	+ Unio cornutus Barnes, 1823
 Unio regularis Lea, 1841
	 Unio retusus Lam.
	+ Unio obtusa Cuvier, 1817
 + Obovaria torsa Rafinesque, 1820
 + Unio retusus Say, 1834
 Unio rivularis Conrad, 1853
	+ Unio declivis Conrad, 1836
 Unio roanokensis Lea, 1838
	 Unio rosaceus DeKay
	 Unio rubellus Con.
	 Unio ruber Raf.
	+ Unio pyramidatus Lea, 1831
 + Unio coccineus Jay, 1850
 Unio rudis Conrad, 1837
	+ Unio ravenelianus Lea, 1834
 Unio rufusculus Lea, 1852
	 Unio rumphianus Lea, 1852
	 Unio sagittiformis Lea, 1852
	 Unio sapotalensis Lea
	 Unio satur Lea, 1852
	 Unio saxeus Con.
	 Unio securiformis Con.
	 Unio semigranosus V. d. Busch
	 Unio shepardianus Lea, 1834
	 Unio simus Lea, 1838
	 Unio sintoxia Raf.
	 Unio sordidus Lea, 1852
	 Unio sowerbianus Lea, 1834
	 Unio sparsus Lea, 1841
	 Unio spatulatus Lea, 1845
	 Unio spinosus Lea
	 Unio splendidus Lea
	 Unio stagnalis Con.
	 Unio stapes Lea, 1832
	 Unio stegarius Raf.
	+ Unio irroratus Lea, 1828
 + Unio stegarius Say, 1834
 Unio stewardsonii Lea, 1852
	 Unio stonensis Lea
	 Unio stramineus Con.
	 Unio striatus Lea, 1841
	 Unio strigosus Lea, 1841
	 Unio subinflatus Con., 1835
	 Unio subplanus Con.
	 Unio subrostratus Say, 1830
	+ Unio iris Lea, 1829
 Unio subrotundus Raf.
	+ Obovaria striata Rafinesque, 1820
 + Unio circulus Lea, 1829
 + Unio subrotundus Ferussac, 1835
 Unio taitianus Lea
	 Unio tampicoensis Lea
	 Unio tecomatensis Lea, 1841
	 Unio tener Lea, 1842
	 Unio tenerus Ravenel, Lea, 1834
	+ Unio tenebrosus Conrad, 1834
 Unio tennesseensis Lea, 1842
	 Unio teres Raf.
	+ Unio anodontoides Lea, 1831
 + Unio teres Say, 1834
 Unio tetralasmus Say
	 Unio tortivus Lea, 1842
	 Unio torulosus (Raf.)
	+ Amblema gibbosa Rafinesque, 1820
 + Unio perplexus Lea, 1831
 + Unio torulosus Ferussac, 1835
 Unio trabalis Conrad, 1834
	+ Unio troostensis Lea, 1834
 Unio trigonus Lea, 1832
	 Unio triqueter Raf.
	+ Unio triangularis Barnes, 1823
 + Unio formosus Lea, 1831
 Unio trossulus Lea
	 Unio truncatus Raf.
	+ Unio elegans Lea, 1831
 Unio tuberosus Lea, 1842
	 Unio tumescens Lea, 1845
	 Unio tæniatus Con.
	+ Unio pulcher Lea, 1838
 Unio undatus Barnes
	 Unio unicolor Lea, 1845
	 Unio utriculus Lea, 1845
	 Unio vanuxemiensis [sic] Lea, 1838
	 Unio vaughnianus [sic] Lea, 1838
	 Unio velatus Con., 1853
	 Unio venustus Lea, 1838
	 Unio verrucosus Raf.
	+ Unio tuberculatus Barnes, 1823
 Unio vibex Con.
	 Unio viridis Raf.
	+ Unio viridis Conrad, 1835
 + Unio tappanianus Lea, 1838
 Unio whiteanus [sic] Lea, 1852
	 Unio zeiglerianus Lea, 1838
	+ Unio zieglerianus Hanley, 1843
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