Bittium pupiforme (R.B. Watson, 1880)
Clypeomorus purpurastoma R.S. Houbrick, 1985
Lirobittium purpureum (P.P. Carpenter, 1864)
Cerithium pyramidale (FOSSIL) C. Moore, 1866 †
Bittium quadricinctum E.A. Smith, 1903
Lirobittium quadrifilatum (P.P. Carpenter, 1864)
Bittium quilonense (FOSSIL) A. Dey, 1961 †
Cerithium quitmanense (FOSSIL) Stanton, 1947 †
Bittium radkiewiczi (FOSSIL) Klushnikov †
Cerithium raulini (FOSSIL) J.P.S. Grateloup, 1840 †
Cerithium raulini ferelaevigatum (FOSSIL) L. Vignal, 1910 †
Cerithium rehderi R.S. Houbrick, 1992
Cerithium renovatum T.A. de M. Monterosato,1884
Cerithium repandum T.A. de M. Monterosato,1884
Bittium reticulatum (E.M. Da Costa, 1778)
Cerithium riachuelanum (FOSSIL) C.J. Maury, 1936 †
Cerithinella rigauxoides (FOSSIL) J. Szabo, 1983 †
Cerithium riograndense (FOSSIL) Stanton, 1947 †
Bittium robustum (FOSSIL) Harmer †
Bittium rodeoense (B.L. Clark, 1922)
Cerithium rostratum A. Adams in G.B. II Sowerby,1855
Zefallacia ruamahanga (FOSSIL) Wells, 1986 †
Zefallacia ruamahunga (FOSSIL) Wells, 1986 †
Cerithium rubiginosum (FOSSIL) (K.E.I. von Eichwald,1830 †)
Cerithium rubiginosum pseudobliquistoma (FOSSIL) Szalai †
Ptychocerithium rude (FOSSIL) (Sowerby, 1840 †)
Cerithium rueppelli R.A. Philippi, 1848
Cerithium rufonodulosum (FOSSIL) (E.A. Smith, 1901 †)
Lirobittium rugatum (P.P. Carpenter, 1864)
Lirobittium rugatum subplanatum P. Bartsch, 1911
Fastigiella rugosa (FOSSIL) (J.B.P.A. Lamarck,1804 †)
Rhinoclavis rustica (FOSSIL) (G.B. Brocchi, 1814 †)
Cerithium sakamotoi (FOSSIL) M. Yokoyama, 1929 †
Cerithium salebrosum G.B. II Sowerby, 1855
Cerithium salinarum W. Kobelt, 1908