Actinonaias Crosse & P. Fischer, 1894 (status source)
Actinonaias (Disconaias) walkeri H. B. Baker, 1922 accepted as Mesonaias tampicoensis (I. Lea, 1838) (source of synonymy)
Actinonaias coyensis (Pilsbry, 1910) (basis of record)
Actinonaias medellina (I. Lea, 1838) (basis of record)
Actinonaias sapotalensis (I. Lea, 1841) (basis of record)
Actinonaias signata (Pilsbry, 1910) (basis of record)
Anodon glabrus G. B. Sowerby II, 1870 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodon horda A. A. Gould, 1855 accepted as Utterbackia imbecillis (Say, 1829) (source of synonymy)
Anodon nopalatensis G. B. Sowerby II, 1867 accepted as Pyganodon globosus (I. Lea, 1841) (source of synonymy)
Anodonta (Anodonta) richardsoni E. von Martens, 1900 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodonta californiensis I. Lea, 1852 (basis of record)
Anodonta chalcoensis Crosse & P. Fischer, 1893 accepted as Anodonta impura Say, 1829 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodonta chapalensis Crosse & P. Fischer, 1893 accepted as Anodonta impura Say, 1829 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodonta coarctata (Anton, 1838) accepted as Anodonta impura Say, 1829 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodonta exilior I. Lea, 1871 accepted as Anodonta impura Say, 1829 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Anodonta grijalvae Morelet, 1884 accepted as Pyganodon globosus (I. Lea, 1841) (source of synonymy)
Anodonta henryiana I. Lea, 1857 accepted as Utterbackia imbecillis (Say, 1829) (source of synonymy)
Anodonta nuttalliana I. Lea, 1838 (status source)
Anodonta oregonensis I. Lea, 1838 (status source)
Anodonta potiezi Bourguignat, 1881 accepted as Anodonta anatina (Linnaeus, 1758) (source of synonymy)
Anodonta tabascensis Morelet, 1884 accepted as Pyganodon globosus (I. Lea, 1841) (source of synonymy)
Anodonta viridana Clessin, 1876 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Arotonaias cyrenoides (R. A. Philippi, 1847) (basis of record)
Arotonaias encarpa (I. Lea, 1868) (basis of record)
Arotonaias gabbiana (I. Lea, 1868) (basis of record)
Arotonaias reticulata (C. T. Simpson, 1900) (basis of record)
Brachyanodon impura (Say, 1829) accepted as Brachyanodon impurus (Say, 1829) (basis of record)
Delphinonaias Crosse & P. Fischer, 1894 (status source)
Delphinonaias largillierti (R. A. Philippi, 1847) (basis of record)
Delphinonaias scutulata (Morelet, 1849) (basis of record)
Disconaias Crosse & P. Fischer, 1894 (basis of record)
Disconaias conchos D. W. Taylor, 1997 (basis of record)
Disconaias disca (I. Lea, 1838) accepted as Disconaias discus (I. Lea, 1838) (basis of record)
Disconaias fimbriata (Frierson, 1907) (basis of record)
Elliptio (Reticulatus) Frierson, 1927 accepted as Arotonaias reticulata (C. T. Simpson, 1900) (source of synonymy)
Friersonia iridella (Pilsbry & Frierson, 1907) (basis of record)
Lampsilis (Disconaias) pilsbryana Frierson, 1927 accepted as Disconaias fimbriata (Frierson, 1907) (source of synonymy)
Lampsilis (Proptera) lividus C. T. Simpson, 1900 accepted as Mesonaias explicata (Morelet, 1849) (source of synonymy)
Lampsilis (Proptera) salinasensis C. T. Simpson, 1908 accepted as Disconaias fimbriata (Frierson, 1907) (source of synonymy)
Lampsilis moctezumensis Pilsbry, 1910 accepted as Disconaias fimbriata (Frierson, 1907) (source of synonymy)
Lampsilis novileonis Pilsbry, 1910 accepted as Friersonia iridella (Pilsbry & Frierson, 1907) (source of synonymy)
Lampsilis rovirosai sanjuanensis H. B. Baker, 1922 accepted as Mesonaias tampicoensis (I. Lea, 1838) (source of synonymy)
Lampsilis ruthveni H. B. Baker, 1922 accepted as Actinonaias sapotalensis (I. Lea, 1841) (source of synonymy)
Lampsilis sapperi Ihering, 1901 accepted as Mesonaias explicata (Morelet, 1849) (source of synonymy)
Lampsilis undivaga Pilsbry, 1910 accepted as Actinonaias signata (Pilsbry, 1910) (source of synonymy)
Lapidosus C. T. Simpson, 1900 accepted as Disconaias Crosse & P. Fischer, 1894 (source of synonymy)
Mesonaias Crosse & P. Fischer, 1894 (status source)
Mesonaias explicata (Morelet, 1849) (basis of record)
Mesonaias tampicoensis (I. Lea, 1838) (basis of record)
Mesonaias umbrosa (I. Lea, 1856) (basis of record)
Micronaias C. T. Simpson, 1900 (status source)
Micronaias arata (I. Lea, 1843) (basis of record)
Micronaias fallaciosa (C. T. Simpson, 1914) (basis of record)
Micronaias granadensis (I. Lea, 1868) (basis of record)
Micronaias marshalli J. P. E. Morrison, 1943 accepted as Micronaias granadensis (I. Lea, 1868) (source of synonymy)
Nephritica Frierson, 1927 (status source)
Nephritica haricotti (Frierson, 1927) (basis of record)
Nephritica poeyana (I. Lea, 1857) (basis of record)
Nephronaias elvae B. Walker, 1924 accepted as Arotonaias reticulata (C. T. Simpson, 1900) (source of synonymy)
Pachynaias Crosse & P. Fischer, 1894 (status source)
Pachynaias spheniopsis (Morelet, 1849) (basis of record)
Pyganodon globosa (I. Lea, 1841) accepted as Pyganodon globosus (I. Lea, 1841) (basis of record)
Sinanodonta woodiana (I. Lea, 1834) (additional source)
Unio (Anodonta) coarctata Anton, 1838 accepted as Brachyanodon impurus (Say, 1829) (source of synonymy)
Unio (Caenonaias) Crosse & P. Fischer, 1894 accepted as Nephronaias Crosse & P. Fischer, 1894 (source of synonymy)
Unio (Graphonaias) Crosse & P. Fischer, 1894 accepted as Actinonaias Crosse & P. Fischer, 1894 (source of synonymy)
Unio (Lampsilis) discus var. connectens E. von Martens, 1900 accepted as Disconaias discus (I. Lea, 1838) (source of synonymy)
Unio (Lampsilis) rovirosai Pilsbry, 1900 accepted as Mesonaias explicata (Morelet, 1849) (source of synonymy)
Unio (Phyllonaias) Crosse & P. Fischer, 1894 accepted as Delphinonaias Crosse & P. Fischer, 1894 (source of synonymy)
Unio alienigenus Crosse & P. Fischer, 1894 accepted as Mesonaias umbrosa (I. Lea, 1856) (subsequent type designation)
Unio alienigenus Crosse & P. Fischer, 1894 accepted as Mesonaias umbrosa (I. Lea, 1856) (source of synonymy)
Unio computatus Crosse & P. Fischer, 1894 accepted as Actinonaias sapotalensis (I. Lea, 1841) (source of synonymy)
Unio delphinulus Morelet, 1849 accepted as Delphinonaias largillierti (R. A. Philippi, 1847) (source of synonymy)
Unio globulosus E. von Martens, 1900 accepted as Micronaias arata (I. Lea, 1843) (source of synonymy)
Unio imbricatus Mörch, 1861 accepted as Arotonaias encarpa (I. Lea, 1868) (source of synonymy)
Unio lapidosus Kobelt, 1893 accepted as Disconaias discus (I. Lea, 1838) (source of synonymy)
Unio mexicanus G. B. Sowerby II, 1867 accepted as Disconaias discus (I. Lea, 1838) (source of synonymy)
Unio microdon E. von Martens, 1887 accepted as Mesonaias explicata (Morelet, 1849) (source of synonymy)
Unio newcombianus I. Lea, 1856 accepted as Arotonaias cyrenoides (R. A. Philippi, 1847) (source of synonymy)
Unio newcombianus I. Lea, 1856 accepted as Arotonaias cyrenoides (R. A. Philippi, 1847) (subsequent type designation)
Unio nicaraguensis I. Lea, 1868 accepted as Arotonaias gabbiana (I. Lea, 1868) (source of synonymy)
Unio nuculinus R. A. Philippi, 1849 accepted as Micronaias arata (I. Lea, 1843) (source of synonymy)
Unio paludosus Morelet, 1849 accepted as Delphinonaias largillierti (R. A. Philippi, 1847) (source of synonymy)
Unio panacoensis R. A. Philippi, 1843 accepted as Disconaias discus (I. Lea, 1838) (source of synonymy)
Unio planivalvis Morelet, 1851 accepted as Delphinonaias largillierti (R. A. Philippi, 1847) (source of synonymy)
Unio plicatulus Küster, 1856 accepted as Nephronaias aztecorum (R. A. Philippi, 1847) (source of synonymy)
Unio rugososulcatus I. Lea, 1866 accepted as Pachynaias spheniopsis (Morelet, 1849) (source of synonymy)
Unio sagrinatus G. B. Sowerby II, 1868 accepted as Arotonaias cyrenoides (R. A. Philippi, 1847) (source of synonymy)
Unio sallei var. grossus E. von Martens, 1900 accepted as Pachynaias spheniopsis (Morelet, 1849) (source of synonymy)
Unio scutulatus var. obliterata P. Fischer & Crosse, 1894 accepted as Delphinonaias scutulata (Morelet, 1849) (subsequent type designation)
Unio scutulatus var. obliterata P. Fischer & Crosse, 1894 accepted as Delphinonaias scutulata (Morelet, 1849) (source of synonymy)
Unio tecomatensis I. Lea, 1841 accepted as Mesonaias tampicoensis (I. Lea, 1838) (source of synonymy)
Unio veracruzensis I. Lea, 1868 accepted as Actinonaias medellina (I. Lea, 1838) (source of synonymy)
Utterbackia F. C. Baker, 1927 (additional source)
Utterbackia imbecillis (Say, 1829) (basis of record)

Mexico for Anodonta henryiana I. Lea, 1857 
Mexico for Unio paludosus Morelet, 1849 
Mexico for Unio planivalvis Morelet, 1851 
Mexico for Unio scutulatus Morelet, 1849 
Nicaragua for Unio nicaraguensis I. Lea, 1868