Antalis longitrorsa (L.A. Reeve, 1842)
Dentalium luchuanum W.H. Dall, 1926
Antalis maestratii V. Scarabino, 2008
Fissidentalium magnificum (E.A. Smith, 1896)
Dentalium majorinum J.F. Mabille& A. de Rochebrune, 1889
Fissidentalium malayanum (M. Boissevain, 1906)
Dentalium malekulaensis V. Scarabino, 2008
Dentalium maltzani R.W. Dunker
Dentalium mancorens (FOSSIL) A.A. Olsson, 1930 †
Dentalium mannarense R. Winckworth, 1927
Dentalium mantelli (FOSSIL) C.A. von Zittel, 1865 †
Graptacme marchadi (M. Nicklés, 1979)
Antalis marukawai (Y. Otuka, 1933)
Dentalium matara W.H. Dall, 1889
Fissidentalium mawsoni (FOSSIL) N.H. Ludbrook, 1956 †
Dentalium mediaviense (FOSSIL) G.F. Harris, 1896 †
Dentalium mediopacificensis H.A. Rehder & H.S. Ladd,1973
Plagioglypta meekiana (FOSSIL) (H.B. Geinitz, 1866 †)
Fissidentalium megathyris (W.H. Dall, 1890)
Fissidentalium metivieri (V. Scarabino, 1995)
Dentalium michelottii (FOSSIL) (R. Hoernes, 1856 †)
Dentalium microstria (FOSSIL) A. Heilprin, 1880 †
Dentalium milleconvolutum Unknown
Dentalium minutum C. Linnaeus, 1758
Dentalium mississippiensis (FOSSIL) T.A. Conrad, 1848 †
Dentalium montense (FOSSIL) Briart & Cornet, 1889 †
Dentalium moreanum (FOSSIL) d'Orbigny, 1845 †
Antalis motidukii (FOSSIL) Y. Otuka, 1935 †
Graptacme multistricta (FOSSIL) (Finlay & J. Marwick,1937 †)
Dentalium mutabile P. Dautzenberg, 1891
Dentalium mutabile (FOSSIL) P. Doderlein & R. Hoernes,1856 †
Antalis nana (F.W. Hutton, 1873)
Dentalium nannarense R. Winckworth, 1927
Paradentalium natalense (K.H. Barnard, 1963)
Dentalium neohexagonum B. Sharp & H.A. Pilsbry,1897