Dentalium aciculum A.A. Gould, 1859
Fissidentalium actiniophorum R.L. Shimek, 1997
Antalis aculeata (G.B. Sowerby, 1860)
Dentalium acutalium R.B. Watson, 1885
Graptacme acutissima (R.B. Watson, 1879)
Graptacme acutistriata G. Steiner & A. Kabat,2004
Dentalium adenense N.H. Ludbrook, 1954
Fissidentalium aegeum (R.B. Watson, 1879)
Dentalium aenigmaticum H.K. Jordan, 1895
Graptacme africana (G.B. III Sowerby, 1903)
Dentalium agassizi H.A. Pilsbry & B. Sharp,1897
Antalis agilis (G.O. Sars in G.O. Sars,1872)
Dentalium akasakensis (FOSSIL) I. Hayasaka, 1925 †
Dentalium alazanum (FOSSIL) Cooke, 1928 †
Antalis albatrossae V. Scarabino, 2008
Antalis alis V. Scarabino, 2008
Paradentalium americanum (J.C. Chenu, 1843)
Fissidentalium amphialum (R.B. Watson, 1879)
Dentalium anatorum A.H. Cooke, 1885
Dentalium angsananum (FOSSIL) Martin, 1922 †
Paradentalium angustistriatum S.D. Chistikov, 1979
Plagioglypta annulostriata (FOSSIL) (F.B. Meek& A.H. Worthen, 1870 †)
Antalis antillaris (A.V.M.D. D'Orbigny,1853)
Dentalium aprinum C. Linnaeus, 1767
Tesseracme arabica B. Sahlmann & V. Wiese,2016
Dentalium aratum (FOSSIL) R. Tate, 1887 †
Dentalium arcotinum E. Forbes, 1846
Antalis ariannae E. Caprotti, 2015
Dentalium atratum (FOSSIL) R. Tate, 1887 †
Dentalium attenuatum (FOSSIL) T. Say, 1824 †
Dentalium austini K.L. Lamprell & J.M. Healy,1998
Fissidentalium badense (FOSSIL) (M. Hörnes, 1856 †)
Antalis bartletti (J. Henderson, 1920)
Antalis basteroti (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1916 †
Dentalium bednalli H.A. Pilsbry & B. Sharp,1898