Cristaria choboensis J.F. Mabille, 1889 Vietnam
Villosa choctawensis E.W. Athearn, 1964 Florida, Walton County28 mm
Parreysia choprae B. Prashad, 1930 Myanmar, Indawgyi Lake
Coelatura choziensis (H.B. Preston, 1910) Zambia, Samfya
Plethobasus cicatricosus (T. Say, 1829) Pennsylvania
Epioblasma cincinnatiensis (I. Lea, 1840) Ohio, Cincinnati
Unionelloides circularis (FOSSIL) (Ding & al., 1982 †)
Elliptio cistellaeformis I. Lea, 1863 North Carolina, Raleigh
Pleurobema clava J.B.P.A. Lamarck, 1819 Alabama
Truncilla cognata I. Lea, 1860 Texas, Val Verde County
Pleurobema collina T.A. Conrad, 1837 Virginia, Rockbridge County
Sphenonaias colorata (J.G.F. de Charpentier in H.C. Küster, 1856) Mexico, Vera Cruz
Uniomerus columbensis (I. Lea, 1857) Ohio, Columbus
Elliptio complanata (J. Lightfoot, 1786) Alabama
Lasmigona complanata (D.W. Barnes, 1823) Alabama155 mm
Pseudanodonta complanata (E.A. Rossmässler, 1835) England, Norfolk62,7 mm
Lasmigona compressa (I. Lea, 1829) Pennsylvania91,5 mm
Microcondylaea compressa (K.T. Menke, 1830) Italy, Mantova
Actinonaias computata (J.C.H. Crosse& P.H. Fischer, 1893) Mexico, Vera Cruz
Disconaias conchos D.W. Taylor, 1997 Mexico, Chihuahua
Lamprotula confragosa (L.S. Frierson, 1928) China, Yangtze River
Arcidens confragosus (T. Say, 1829) Alabama126 mm
Elliptio congaraea (I. Lea, 1831) Alabama42 mm
Strophitus connasaugaensis (I. Lea, 1858) Alabama130 mm
Medionidus conradicus (I. Lea, 1838) Tennessee, Tennessee river50 mm
Lamellidens consobrinus (I. Lea, 1859) Sri Lanka52 mm
Villosa constricta (T.A. Conrad, 1838) Tennessee
Contradens contradens (I. Lea, 1838) Malaysia30 mm
Contradens contradens ascia (S.C.T. Hanley, 1856) Malaysia30 mm
Contradens contradens crossei (G.P. Deshayes, 1876) Laos52 mm
Contradens contradens fischerianus (L.J. Morlet, 1883)
Contradens contradens lugens (H. Drouët& M.A. Chaper, 1892)
Contradens contradens rustica (I. Lea, 1856) Laos28 mm
Contradens contradens rusticoides R.A.M. Brandt, 1974 Thailand49,02 mm
Contradens contradens tumidula (I. Lea, 1856) Thailand48 mm