Muricopsis mcleani S.G. Wiedrick, 2009
Aspella media R. Houart, 1987
Nucella medinae (FOSSIL) (R.A. Philippi, 1887 †)
Babelomurex mediopacificus (S. Kosuge, 1979)
Hexaplex megacerus (G.B. II Sowerby, 1834)
Ecphora meganae (FOSSIL) Ward & Gilinsky, 1988 †
Ecphora meganae sandgatensis (FOSSIL) E.J. Petuch, 1988 †
Ecphora meganae williamsi (FOSSIL) C.J. Ward & Gilinsky,1988 †
Murex megapex E. Neubert, 1998
Rapana mekranica (FOSSIL) Cox, 1936 †
Thalessa mekranica (FOSSIL) E.W. Vredenburg, 1925 †
Homalocantha melanamathos (J.F. Gmelin, 1791)
Homalocantha melanamathos chinii G. Biraghi, 1984
Vasula melones (P.L. Duclos, 1832)
Trophon melvillsmithi R. Houart, 1989
Babelomurex memimarumai S. Kosuge, 1985
Urosalpinx mengeana (FOSSIL) W.H. Dall, 1890 †
Favartia menoui (R. Houart, 1990)
Chicoreus mergus E.H. Vokes, 1974
Pterynopsis meridionalis (FOSSIL) P. Lozouet, 1999 †
Murexsul merlei R. Houart & V. Héros,2008
Chorus meroensis (FOSSIL) A.A. Olsson, 1931 †
Vokesimurex messorius (G.B. II Sowerby, 1841)
Eupleura metae (FOSSIL) E.J. Petuch, 1994 †
Murexsul metivieri (R. Houart, 1988)
Leptotrophon metivieri R. Houart, 1995
Coralliophila meyendorffii (P. Calcara, 1845)
Chicoreus miamiensis (FOSSIL) E.J. Petuch, 1994 †
Subpterynotus miamiensis (FOSSIL) E.J. Petuch, 1994 †
Urosalpinx miamiensis (FOSSIL) E.J. Petuch, 1994 †
Bizetiella micaela G.E. Radwin & D'Attilio,1972
Cymia michaocanensis (FOSSIL) Perrilliat, 1987 †
Siratus michelae R. Houart & J. Colomb,2012
Phyllocoma michelottii (FOSSIL) (L.M.D. Bellardi, 1872 †)
Murexsul micra (R. Houart, 2001)