Nepotilla mimica (G.B. III Sowerby, 1896)
Hemilienardia minialba Wiedrick, 2017
Pontiothauma minus E.A. Smith, 1906
Nepotilla minuta (J.E. Tenison-Woods,1877)
Pleurotomella minuta A.V. Sysoev & D.L. Ivanov,1985
Pontiothauma mirabile E.A. Smith, 1895
Raphitoma mirabilis (P.M. Pallary, 1904)
Thatcheria mirabilis G.F. Angas, 1877
Taranis miranda K.H.J. Thiele, 1925
Famelica mirmidina (P. Dautzenberg& H. Fischer, 1896)
Daphnella mitrellaformis (S. Nomura, 1940)
Gymnobela mitrodeta A.V. Sysoev, 1997
Paramontana modesta (G.F. Angas, 1877)
Taranis moerchi (A.W. Malm, 1861)
Hemilienardia moffitti Wiedrick, 2017
Eubela monile (FOSSIL) J. Marwick, 1931 †
Famelica monoceros (R.B. Watson, 1881)
Daphnella monocincta G.W. Nowell-Usticke, 1969
Famelica monotropis (P. Dautzenberg& H. Fischer, 1896)
Teretia monterosatoi (FOSSIL) (Cipolla, 1914 †)
Daphnella moreaui (FOSSIL) M.A. Peyrot, 1932 †
Asperdaphne moretonica (E.A. Smith, 1882)
Rimosodaphnella morra (W.H. Dall, 1881)
Microdaphne morrisoni H.A. Rehder, 1980
Phymorhynchus moskalevi A.V. Sysoev & Y.I. Kantor,1995
Teretia multicingula (FOSSIL) (Seguenza, 1880 †)
Hemilienardia multidentata Wiedrick, 2017
Gymnobela muricata A.V. Sysoev, 1997
Daphnella mutabilis (FOSSIL) C. Mayer, 1858 †
Teretia nana (FOSSIL) (A. Hornung, 1920 †)
Thesbia nana (S.L. Lovén, 1846)
Raphitoma natalensis K.H. Barnard, 1958
Pseudodaphnella nebulosa (W.H. Pease, 1860)
Raphitoma neerrepenensis (FOSSIL) R. Marquet, Lenaerts& Laporte, 2016 †
Teretia neocaledonica M. Morassi & A. Bonfitto,2015