Orania atea R. Houart & J. Tröndlé,2008
Murex athenasi (FOSSIL) Vasseur, 1881 †
Coralliophila atlantica E.A. Smith, 1890
Leptotrophon atlanticus A. Pimenta, do Couto& P.M.S. Costa, 2008
Timbellus atlantideus (P. Bouchet & A. Warén,1985)
Babelomurex atlantidis M. Oliverio & S. Gofas,2006
Paziella atlantis W.J. Clench& I. Pérez Farfante, 1945
Axymene aucklandicus (E.A. Smith, 1902)
Cronia aurantiaca (J.B. Hombron, 1835)
Murexsul auratus J.T. Kuroda & T. Habe,1971
Stenomphalus aurora (FOSSIL) R.B. Wilson, 1987 †
Urosalpinx auroraensis (FOSSIL) E.J. Petuch, 1994 †
Coralliophila australis M. Oliverio, 2009
Chicoreus austramosus E.H. Vokes, 1978
Murex austriacus (FOSSIL) R. Tournouer, 1875 †
Jsowerbya auversiensis (FOSSIL) (G.P. Deshayes, 1865 †)
Boreotrophon avalonensis W.H. Dall, 1902
Favartia avatea (R. Houart & J. Tröndlé,2008)
Cronia avellana (L.A. Reeve, 1846)
Cronia avenacea (R.P. Lesson, 1842)
Ocenebra avitensis (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1923 †
Ocinebrina avitensis (FOSSIL) (A.E.M. Cossmann& M.A. Peyrot, 1923 †)
Prototyphis awamoanus (FOSSIL) (Finlay, 1930 †)
Chicoreus axicornis (J.B.P.A. Lamarck, 1822)
Chicoreus axicornis kawamurai T. Shikama, 1964
Ingensia axirugosa (R.K. Dell, 1956)
Vaughtia babingtoni (G.B. III Sowerby, 1892)
Orania badia (L.A. Reeve, 1845)
Trophon bahamondei J.H. McLean & B.G. Andrade,1982
Haustrum baileyanum (J.E. Tenison-Woods,1881)
Dermomurex bakeri (L.G. Hertlein& A.M. Strong, 1951)
Murex balkeanus E.H. Vokes, 1967
Favartia balteata (G.B. II Sowerby, 1841)
Triplex banksii (G.B. II Sowerby, 1841)
Triplex banksii crocatus L.A. Reeve, 1845