Ataxocerithium abnormale (G.B. III Sowerby, 1903)
Trituba additicia S. Gofas, 2003
Cerithiella aequalirata (FOSSIL) D.T. Dockery, 1993 †
Cerithiella aethiopica K.H.J. Thiele, 1925
Eumetula albachiarae A. Cecalupo & I. Perugia,2014
Specula albengai A. Cecalupo & I. Perugia,2013
Eumetula aliceae (P. Dautzenberg& H. Fischer, 1896)
Cerithiella amblytera (R.B. Watson, 1880)
Trituba anelpistos (P. Bouchet & R. Fechter,1981)
Cerithiella angustisulcata (FOSSIL) J.P.J. Ravn, 1933 †
Cerithiella antarctica (E.A. Smith, 1907)
Granulotriforis antepallaxa (B.A. Marshall, 1977)
Trituba anubis M.R. Fernandes, R. Garofalo& A. Pimenta, 2015
Paramendax apicina (A.W.B. Powell, 1937)
Ataxocerithium applenum T. Iredale, 1936
Eumetula arctica (O.A.L. Mörch, 1857)
Cerithiella argentea K.H.J. Thiele, 1925
Cerithiella astrolabiensis (H. Strebel, 1908)
Cerithiella atali M.R. Fernandes, R. Garofalo& A. Pimenta, 2015
Paramendax attenuatispira (A.W.B. Powell, 1937)
Eumetula aureola (A.W.B. Powell, 1933)
Cerithiella australis A. Cecalupo & I. Perugia,2017
Cerithiella austrina (C. Hedley, 1911)
Eumetula axicostulata (Z.J.A. De Castellanos, E. Rolán& S. Bartolotta, 1987)
Trituba barbadensis (H.E. Coomans & M.J. Faber,1984)
Ataxocerithium beasleyi B.C. Cotton & F.C. Godfrey,1938
Eumetula bia P. Bartsch, 1915
Ataxocerithium biaulax (FOSSIL) Darragh, 2017 †
Specula bicolor A. Cecalupo & I. Perugia,2012
Eumetula bimarginata (C.B. Adams, 1852)
Vatopsis bimonilifera (FOSSIL) (C.L.F. von Sandberger,1858 †)
Cerithiella bisculpta (H. Strebel, 1908)
Cerithiella bitorquata (FOSSIL) (R.A. Philippi, 1843 †)
Trituba bitubulata (FOSSIL) (A.A. Baudon, 1856 †)
Longaevicerithium bitzae (FOSSIL) (Gerasimov, 1992 †)