Favartia mariagordae Espinosa & Ortea, 2016
Muregina marijkeae (FOSSIL) DeVries, 2005 †
Hexaplex marksi (FOSSIL) G.F. Harris, 1894 †
Pteropurpura marksi (FOSSIL) A.A. Olsson, 1964 †
Mancinella marmorata (W.H. Pease, 1865)
Coralliophila marrati J. Knudsen, 1956
Hirtomurex marshalli M. Oliverio, 2008
Timbellus marshalli (R. Houart, 1989)
Leptotrophon marshalli R. Houart, 1995
Ergalatax martensi (M.M. Schepman, 1892)
Pterynotus martinetanus (P.F. Röding, 1798)
Favartia martini (T. Shikama, 1977)
Phyllonotus martinshugari (FOSSIL) E.J. Petuch, 1994 †
Babelomurex marumai (T. Habe & S. Kosuge,1970)
Uttleya marwicki A.W.B. Powell, 1952
Murexsul marwicki (FOSSIL) P.A. Maxwell, 1971 †
Trossulasalpinx maryae (FOSSIL) E.J. Petuch, 1991 †
Nassa marylandica (FOSSIL) Martin, 1904 †
Favartia massemini D. Merle & B. Garrigues,2008
Leptoconchus massini E. Gittenberger& A. Gittenberger, 2011
Dermomurex matercula (FOSSIL) E.H. Vokes, 1975 †
Muricopsis matildeae E. Rolán & F. Fernandes,1991
Mipus matsumotoi S. Kosuge, 1985
Pterynotus matthewsensis (FOSSIL) T.H. Aldrich, 1886 †
Aspella mauritiana G.E. Radwin & D'Attilio,1976
Chicoreus maurus (W.J. Broderip, 1833)
Chicoreus maurus steeriae (L.A. Reeve, 1845)
Panamurex mauryae (FOSSIL) E.H. Vokes, 1970 †
Latiaxis mawae (J.E. Gray in E. Griffith& E. Pidgeon, 1834)
Latiaxis mawae kylix K.H. Barnard, 1959
Trophon mawsoni A.W.B. Powell, 1957
Haustrum maximum (FOSSIL) (Powell & J.A. Bartrum,1929 †)
Enixotrophon maxwelli (B.A. Marshall & R. Houart,2011)
Boreotrophon mazatlanicus W.H. Dall, 1902
Murexsul mbotyiensis (R. Houart, 1991)