Actinonaias didymictidis (T. D. A. Cockerell, 1915) † (basis of record)
Actinonaias mendax (C. A. White, 1877) † accepted as Plesielliptio mendax (C. A. White, 1877) † (basis of record)
Actinonaias shoshonensis (C. A. White, 1876) † (basis of record)
Amblema baueri (Stanton, 1916) † accepted as Unio baueri Stanton, 1916 † (basis of record)
Amblema cretacollis (Maury, 1902) † (basis of record)
Amblema goniambonatus (C. A. White, 1878) † (basis of record)
Amblema gonionotus (C. A. White, 1876) † (basis of record)
Amblema nebrascensis (Meek, 1871) † (basis of record)
Amblema porcata (MacNeil, 1935) † accepted as Megalonoidea porcata MacNeil, 1935 † (basis of record)
Amblema reesidei (Stanton, 1916) † (basis of record)
Amblema rugicosta (MacNeil, 1935) † accepted as Megalonoidea rugicosta MacNeil, 1935 † (basis of record)
Amblema trigoniaformis (Maury, 1902) † (basis of record)
Anodonta arnoldi C. E. Weaver & K. van W. Palmer, 1922 † (additional source)
Anodonta athlios (Mayer, 1869) † (additional source)
Anodonta kettlemanensis Arnold, 1909 † (additional source)
Anodonta malheurensis J. Henderson & Rodeck, 1934 † accepted as Gonidea malheurensis (J. Henderson & Rodeck, 1934) † (additional source)
Anodonta nuttalliana lignitica J. G. Cooper, 1894 † (source of synonymy)
Anodontites argillensis (L. S. Russell, 1932) † (basis of record)
Antediplodon borealis (Pilsbry, 1921) † (basis of record)
Antediplodon carolussimpsoni (Pilsbry, 1921) † (basis of record)
Antediplodon dockumensis (C. T. Simpson, 1896) † (additional source)
Antediplodon dumblei (C. T. Simpson, 1896) † (additional source)
Antediplodon graciliratus (C. T. Simpson, 1896) † (additional source)
Antediplodon gregoryi (Reeside, 1927) † (basis of record)
Antediplodon pennsylvanicus (Pilsbry, 1921) † (basis of record)
Antediplodon yorkensis (Pilsbry, 1921) † (basis of record)
Archanodontidae Modell, 1957 † accepted as Amnigeniidae Khalfin, 1948 † (original description)
Arkansia macneili Modell, 1957 † accepted as Arcidens macneili (Modell, 1957) † (original description)
Callonaia subtrigonalis (Whitfield, 1907) † (basis of record)
Costanaia arciformis MacNeil, 1935 † (additional source)
Cuneopsis transpacificus (Arnold & Hannibal, 1912) † accepted as Plesielliptio transpacificus (Arnold & Hannibal, 1912) † (basis of record)
Cyclomya C. T. Simpson, 1900 accepted as Rhipidodonta Mörch, 1853 (basis of record)
Cyclomya subplanata (C. T. Simpson, 1896) † accepted as Rhipidodonta subplanata (C. T. Simpson, 1896) † (basis of record)
Dysnomia (Penita) macropisthus (C. A. White, 1886) † accepted as Unio macropisthus C. A. White, 1886 † (basis of record)
Dysnomia (Penita) tyrelli [sic] † accepted as Plesielliptio brachyopisthus (C. A. White, 1876) † (basis of record)
Dysnomia (Pilea) proavita (C. A. White, 1877) † accepted as Pleurobema proavitum (C. A. White, 1877) † (basis of record)
Elliptio albertensis (Whiteaves, 1885) † (basis of record)
Elliptio clinopisthus (C. A. White, 1882) † (basis of record)
Elliptio eomargaron (T. D. A. Cockerell, 1915) † (basis of record)
Elliptio haydeni (Meek, 1860) † (basis of record)
Elliptio hubbardi [sic] † accepted as Elliptio hubbardii (Gabb, 1869) † (basis of record)
Elliptio nanaimonensis [sic] † accepted as Elliptio nanaimoensis (Whiteaves, 1901) † (basis of record)
Elliptio salissiensis L. S. Russell, 1952 † (additional source)
Elliptio washakiensis (Meek, 1871) † (basis of record)
Eurynia felchi [sic] † accepted as Eurynia felchii (C. A. White, 1886) † (basis of record)
Eurynia silberlingi (L. S. Russell, 1934) † accepted as Elliptio silberlingi L. S. Russell, 1934 † accepted as Plesielliptio silberlingi (L. S. Russell, 1934) † (basis of record)
Eurynia supragibbosa (Whiteaves, 1885) † accepted as Plesielliptio supragibbosus (Whiteaves, 1885) † (basis of record)
Fusconaia brachyopisthus (C. A. White, 1876) † accepted as Plesielliptio brachyopisthus (C. A. White, 1876) † (basis of record)
Fusconaia cryptorhynchus (C. A. White, 1877) † accepted as Pleurobema cryptorhynchus (C. A. White, 1877) † (basis of record)
Glebula nucalis (Meek & Hayden, 1858) † (basis of record)
Gonidea coalingensis Arnold, 1909 † (additional source)
Gonidea coalingensis var. cooperi Arnold, 1909 † accepted as Gonidea coalingensis Arnold, 1909 † (source of synonymy)
Gonidea hemphilli Hannibal, 1912 † (additional source)
Lampsilis brimhallensis (Stanton, 1916) † (basis of record)
Lampsilis grangeri (T. D. A. Cockerell, 1915) † (basis of record)
Lampsilis marshalli MacNeil, 1935 † accepted as Potamilus marshalli (MacNeil, 1935) † (basis of record)
Lampsilis sandersoni (P. S. Warren, 1926) † (additional source)
Lampsilis sandrius (Dall, 1913) † (basis of record)
Lampsilis toxonotus (C. A. White, 1886) † (basis of record)
Lanceolaria onariotis (C. Mayer, 1869) † accepted as Plesielliptio onariotis (C. Mayer, 1869) † (basis of record)
Lemiox minimus (P. S. Warren, 1926) † accepted as Fusconaia stantoni (C. A. White, 1907) † accepted as Plesielliptio stantoni (C. A. White, 1907) † (basis of record)
Leptodea wasatchensis (T. D. A. Cockerell, 1914) † accepted as Plesielliptio wasatchensis (T. D. A. Cockerell, 1914) † (basis of record)
Lexingtonia postbiplicata (Whitfield, 1903) † accepted as Plesielliptio postbiplicatus (Whitfield, 1903) † (basis of record)
Ligumia barbouri (C. A. White, 1895) † (basis of record)
Ligumia bowlingi (MacNeil, 1935) † (basis of record)
Ligumia consueta (Whiteaves, 1885) † accepted as Lampsilis consuetus (Whiteaves, 1885) † (basis of record)
Ligumia couesi (C. A. White, 1877) † (basis of record)
Ligumia farri (Stanton, 1903) † accepted as Lampsilis farri (Stanton, 1903) † (basis of record)
Ligumia stantoni (C. A. White, 1907) † accepted as Plesielliptio stantoni (C. A. White, 1907) † (basis of record)
Ligumia tellinoides (J. Hall, 1845) † (basis of record)
Ligumia vetusta (Meek, 1860) † accepted as Plesielliptio vetustus (Meek, 1860) † (basis of record)
Ligumia whitei (J. Henderson, 1918) † (basis of record)
Margaritana subangulata J. G. Cooper, 1894 † accepted as Gonidea coalingensis Arnold, 1909 † (source of synonymy)
Margaritifera endlichi (C. A. White, 1877) † (basis of record)
Medionidus lapilloides (C. A. White, 1886) † (basis of record)
Mycetopoda parallela (C. A. White, 1878) † accepted as Anodonta parallela C. A. White, 1878 † (basis of record)
Obliquata dowlingi (McLearn, 1919) † accepted as Pleurobema dowlingi (McLearn, 1919) † (basis of record)
Obliquata humei (Dyer, 1930) † accepted as Pleurobema humei (Dyer, 1930) † (basis of record)
Obliquata prophetica (C. A. White, 1876) † accepted as Epioblasma prophetica (C. A. White, 1876) † (basis of record)
Obliquata stewardi (C. A. White, 1876) † accepted as Epioblasma stewardi (C. A. White, 1876) † (basis of record)
Obovaria corbiculoides (Whitfield, 1907) † accepted as Proparreysia corbiculoides (Whitfield, 1907) † (basis of record)
Orthonymus holmesianus (C. A. White, 1877) † accepted as Proparreysia holmesiana (C. A. White, 1877) † (basis of record)
Orthonymus primaevus (C. A. White, 1877) † accepted as Quadrula primaevus (C. A. White, 1877) † (basis of record)
Orthonymus subprimaevis (Dyer, 1930) † accepted as Theliderma subprimaevis (Dyer, 1930) † (basis of record)
Orthonymus subprimaevus [sic] † accepted as Theliderma subprimaevis (Dyer, 1930) † (basis of record)
Plesielliptio abbreviatus (Stanton & Hatcher, 1905) † (additional source)
Plesielliptio priscus (Meek & Hayden, 1856) † (additional source)
Pleurobema alixus (Dall, 1913) † (basis of record)
Pleuronaia neomexicana (Stanton, 1916) † (basis of record)
Pliconaias popenoei W. B. Marshall, 1929 † (additional source)
Pliconaias popenoi [sic] † accepted as Pliconaias popenoei W. B. Marshall, 1929 † (basis of record)
Proparreysia browni (Whitfield, 1903) † accepted as Proparreysia barnumi (Pilsbry, 1904) † (basis of record)
Proparreysia retusoides pyramidatoides (Whitfield, 1907) † accepted as Proparreysia pyramidatoides (Whitfield, 1907) † (basis of record)
Proparreysia retusoides pyramidellus (Whitfield, 1907) † accepted as Obovaria pyramidella (Whitfield, 1907) † accepted as Proparreysia pyramidella (Whitfield, 1907) † (basis of record)
Protamblema Modell, 1957 † (original description)
Protamblema belliplicata (Meek, 1871) † (basis of record)
Protamblema belliplicata macneili Modell, 1957 † accepted as Protamblema macneili Modell, 1957 † (original description)
Protelliptio L. S. Russell, 1934 † (basis of record)
Pustulosa gardneri (Stanton, 1916) † accepted as Proparreysia gardneri (Stanton, 1916) † (basis of record)
Quadrula haroldi (Reeside, 1927) † accepted as Diplodon haroldi Reeside, 1927 † (basis of record)

Texas for Arkansia macneili Modell, 1957 † 
Wyoming for Protamblema belliplicata macneili Modell, 1957 † 

 Status

 for Anodonta nuttalliana lignitica J. G. Cooper, 1894 †

Listed as synonym of the younger (!) Anodonta malheurensis Henderson & Rodeck, 1934 by Modell (1957), but without ... [details]

 Type locality

 for Arkansia macneili Modell, 1957 †

"Catahoula beds, Texas". MacNeil (1935) specified the locality more clearly: "5 miles north of the town of La ... [details]

 Type locality

 for Protamblema belliplicata macneili Modell, 1957 †

1 mil. east of Waterfall station, Wyoming (USA) [details]

 Type species

 for Proparreysia Pilsbry, 1921 †

Modell (1957) invalidly designated Unio browni Whitfield, 1903 as type species, although Pilsbry (1921, footnote on ... [details]