Lophiotoma abbreviata (L.A. Reeve, 1843)
Lophiotoma abbreviata lifuensis (G.B. III Sowerby, 1907)
Lophiotoma abbreviata ustulata (L.A. Reeve, 1846)
Pleurotoma abyssicola (L.A. Reeve, 1844)
Lophiotoma acuta (G. Perry, 1811)
Lophiotoma acuta jickelii (H.C. Weinkauff& W. Kobelt, 1875)
Gemmula acutangularis (FOSSIL) (G.P. Deshayes, 1834 †)
Turridrupa acutigemmata (E.A. Smith, 1877)
Liratomina adelaidensis (FOSSIL) Powell, 1944 †
Turris adendanii (FOSSIL) Abbass, 1967 †
Lucerapex adenica A.W.B. Powell, 1964
Turris aequensis (FOSSIL) (J.P.S. Grateloup,1832 †)
Gemmula aethiopica (K.H.J. Thiele, 1925)
Dallora agina (FOSSIL) (A.A. Olsson, 1942 †)
Turris ahmedi (FOSSIL) Abbass, 1967 †
Gemmula alazana (FOSSIL) C.W. Cooke, 1928 †
Pleurotoma albida A. Risso, 1826
Polystira albida (G. Perry, 1811)
Polystira albida antillarum (FOSSIL) (A.E.M. Cossmann, 1913) †
Polystira albidoides (FOSSIL) J. Gardner, 1937 †
Lophiotoma albina (J.B.P.A. Lamarck, 1822)
Pleurotoma albinoides (FOSSIL) Martin, 1883 †
Turridrupa albofasciata (E.A. Smith, 1877)
Kuroshioturris albogemmata J.T. Kuroda, T. Habe& K. Oyama, 1971
Turridrupa albogemmata P. Stahlschmidt& K. Fraussen, 2011
Parasyrinx alta (FOSSIL) (G.F. Harris, 1897 †)
Turris altispira (FOSSIL) (W.L. May, 1922 †)
Gemmula alwyni R.N. Kilburn, 2005
Gemmula amabilis (H.C. Weinkauff, 1875)
Turris ambages K.H. Barnard, 1958
Gemmula ambara B.M. Olivera, D.R. Hillyard& M. Watkins, 2008
Eucheilodon americana (FOSSIL) †
Sinistrella americana (FOSSIL) (T.H. Aldrich, 1885 †)
Gemmula amica (FOSSIL) T.L. Casey, 1903 †
Turris amicta (E.A. Smith, 1877)