Pomahakia aberrans (FOSSIL) Finlay, 1927 †
Euthria abrotona K. Fraussen & E. Rolán,2003
Lusitromina abyssicola (A.H. Clarke, 1961)
Buccinum abyssorum A.E. Verrill& S. Smith in A.E. Verrill, 1884
Lusitromina abyssorum (V.J. Lus, 1993)
Mohnia abyssorum (P. Fischer, 1884)
Retimohnia acadiana E.F. Garcia, 2008
Anomalisipho acosmius (W.H. Dall, 1891)
Cominella acuminata F.W. Hutton, 1893
Buccinum acuminulatum A.N. Golikov, 1980
Siphonalia acuta (FOSSIL) Rivera, 1957 †
Cantharus acuticingulatus (FOSSIL) (H.H. Suter, 1917 †)
Austrofusus acuticostatus (FOSSIL) (H.H. Suter, 1917 †)
Cominella acutinodosa (L.A. Reeve, 1846)
Neptunea acutispiralis T.A. Okutani, 1968
Buccinum acutispiratum W.H. Dall, 1907
Euthria adeles P. Dautzenberg & H. Fischer,1906
Japelion adelphicus (W.H. Dall, 1907)
Parviphos adelus (J.S. Schwengel, 1942)
Cominella adspersa (J.G. Bruguière, 1789)
Metula aegrota (L.A. Reeve, 1845)
Burnupena aestus (FOSSIL) B.F. Kensley & Pether,1986 †
Afer afer (J.F. Gmelin, 1791)
Austrofusus affiliatus (FOSSIL) Finlay, 1926 †
Buccinum affinis R.P. Lesson, 1842
Penion affixus (FOSSIL) (Finlay, 1930 †)
Metula africana P. Bouchet, 1988
Speccapollia africana Fraussen & Stahlschmidt,2016
Liomesus africanus (FOSSIL) R.B. Newton, 1922 †
Afer africanus (G.B. III Sowerby, 1897)
Volutharpa ainos J.T. Kuroda & T. Kinoshita,1956
Neptunea alabaster D.O. Alexeyev & K. Fraussen,2005
Neptunea alaquaensis (FOSSIL) W.C. Mansfield, 1935 †
Buccinum albipunctatum A. Adams & L.A. Reeve,1850
Engina albocincta W.H. Pease, 1860