Pteropurpura macroptera tremperi W.H. Dall, 1910 California, San Diego County43,8 mm
Favartia mactanensis (W.K. Emerson& D'Attilio, 1979) Philippines, Bohol Island19 mm
Favartia maculata (L.A. Reeve, 1845) Philippines, Bohol Island28 mm
Orania maestratii R. Houart & J. Tröndlé,2008 Cook Islands, Rapa Island10,1 mm
Scabrotrophon maestratii R. Houart & V. Héros,2016 Papua, New Guinea
Purpura magellani C. Vélain, 1876 Saint Paul Island
Ponderia magna R. Houart, 1988 Coral Sea, Chesterfield Plateau19,2 mm
Nipponotrophon magnificus (A.N. Golikov& B.I. Sirenko, 1992) Kuril Islands
Nipponotrophon makassarensis R. Houart, 1985 Indonesia, Makassar Strait37,5 mm
Vokesimurex malabaricus (E.A. Smith, 1894) India, Tuticorin88,9 mm
Indothais malayensis (S.K. Tan& J.B. Sigurdsson, 1996) Taiwan Strait41 mm
Coralliophila mallicki H.S. Ladd, 1977 Philippines, Bohol Island21,7 mm
Scabrotrophon maltzani (W. Kobelt, 1878) Baja California47 mm
Fuegotrophon malvinarum (H. Strebel, 1908) Falkland Islands
Mipus mamimarumai (S. Kosuge, 1980) Taiwan20 mm
Scabrotrophon manai Houart & Héros, 2016
Murexsul mananteninaensis R. Houart & V. Héros,2015
Coralliophila mandji P.A. Bernard, 1989 Gabon
Trophon mangelioides (FOSSIL) R. Tate, 1888 †
Babelomurex mansfieldi (J.T.L. McGinty, 1940) Panama15 mm
Ecphora mansfieldi (FOSSIL) E.J. Petuch, 1989 † Florida
Murexiella mantelli (FOSSIL) (T.A. Conrad, 1834 †) USA, Alabama, Monroe
Murex manubriatus (FOSSIL) R. Tate, 1888 †
Naquetia manwaii R. Houart & V. Héros,2013 South Madagascar
Favartia maraisi (E.H. Vokes, 1978) South Africa, Xora5 mm
Scabrotrophon maranii Houart & Héros, 2016
Muricopsis marcusi E.H. Vokes, 1994 Brazil, Rio de Janeiro23 mm
Calotrophon margaritae (FOSSIL) (A.E.M. Cossmann& A. Lambert, 1884 †) France, Paris Basin
Phyllonotus margaritensis (R.T. Abbott, 1958) South Australia98 mm
Drupella margariticola (W.J. Broderip, 1833) Philippines, Calituban Island26,1 mm
Tenguella marginalba (H.M.D. de Blainville,1832) Australia, Dingo Beach21,3 mm
Lepsiella marginata (G.P. Deshayes, 1839) Seychelles24 mm
Neothais marginatra (H.M.D. de Blainville,1832) Philippines, Balicasag Island33 mm
Murexsul mariae (H.J. Finlay, 1930) New Zealand, Opito Bay32,5 mm
Thaisella mariae (F. Lange de Morretes,1954) Brazil, Pernambuco27 mm