Antalis longitrorsa (L.A. Reeve, 1842) South Africa, Natal, Durban Bay78 mm
Dentalium luchuanum W.H. Dall, 1926 Japan, Kagoshima
Antalis maestratii V. Scarabino, 2008 Tonga78,9 mm
Fissidentalium magnificum (E.A. Smith, 1896) Philippines, Balicasag Island50 mm
Dentalium majorinum J.F. Mabille& A. de Rochebrune, 1889 Antarctic Peninsula
Fissidentalium malayanum (M. Boissevain, 1906) Indonesia, Timor
Dentalium malekulaensis V. Scarabino, 2008 Vanuatu Island, New Hebrides
Dentalium maltzani R.W. Dunker Senegal, Goree Bay
Dentalium mancorens (FOSSIL) A.A. Olsson, 1930 † Peru, Piura, Talara
Dentalium mannarense R. Winckworth, 1927 India, Tuticorin
Dentalium mantelli (FOSSIL) C.A. von Zittel, 1865 † Australia, Victoria
Graptacme marchadi (M. Nicklés, 1979) West Sahara18 mm
Antalis marukawai (Y. Otuka, 1933) Japan
Dentalium matara W.H. Dall, 1889 North Carolina, Cape Lookout
Fissidentalium mawsoni (FOSSIL) N.H. Ludbrook, 1956 † Australia, South Australia, Adelaide
Dentalium mediaviense (FOSSIL) G.F. Harris, 1896 † Texas, Bastrop County13,9 mm
Dentalium mediopacificensis H.A. Rehder & H.S. Ladd,1973 Agassiz Guyot Seamount
Plagioglypta meekiana (FOSSIL) (H.B. Geinitz, 1866 †) USA, Nebraska, Otoe
Fissidentalium megathyris (W.H. Dall, 1890) Ecuador
Fissidentalium metivieri (V. Scarabino, 1995) Madagascar, Majenga125 mm
Dentalium michelottii (FOSSIL) (R. Hoernes, 1856 †) Italy, Emilia
Dentalium microstria (FOSSIL) A. Heilprin, 1880 † Trinidad and Tobago, Siparia
Dentalium milleconvolutum Unknown Japan, Tosa
Dentalium minutum C. Linnaeus, 1758 Mediterranean Sea
Dentalium mississippiensis (FOSSIL) T.A. Conrad, 1848 † USA, Mississippi
Dentalium montense (FOSSIL) Briart & Cornet, 1889 † Turkey, Yozgat, Yerkoy
Dentalium moreanum (FOSSIL) d'Orbigny, 1845 † Greenland, Cape Stosch
Antalis motidukii (FOSSIL) Y. Otuka, 1935 † Japan, Noto Peninsula
Graptacme multistricta (FOSSIL) (Finlay & J. Marwick,1937 †)
Dentalium mutabile P. Dautzenberg, 1891 Italy, Santa Maria di Leuca30,3 mm
Dentalium mutabile (FOSSIL) P. Doderlein& R. Hoernes, 1856 † Turkey, Karaman
Antalis nana (F.W. Hutton, 1873) New Zealand, Hawkes Bay25 mm
Dentalium nannarense R. Winckworth, 1927 Sri Lanka
Paradentalium natalense (K.H. Barnard, 1963) South Africa, Natal, Durban Bay34,4 mm
Dentalium neohexagonum B. Sharp & H.A. Pilsbry,1897 California, Redondo Beach20 mm