Mitraelyria mitraeformis grockeae (E.J. Petuch& D.P. Berschauer, 2017)
Pseudaulicina mitrata (FOSSIL) (G.P. Deshayes, 1835 †)
Harpulina mitreola (FOSSIL) (J.B.P.A. Lamarck,1802 †)
Amoria molleri (T. Iredale, 1936)
Amoria molleri capricornica P. Bail & A. Limpus, 2001
Amoria molleri isabelae P. Bail & A. Limpus, 2001
Amoria molleri reducta P. Bail & A. Limpus, 2001
Amoria molleri vandenbergae P. Bail & A. Limpus, 2001
Cymbiola moretonensis P. Bail & A. Limpus, 1998
Voluta morrisoni (E.J. Petuch, 1980)
Voluta morrisoni harasewychi (E.J. Petuch, 1984)
Livonia mortoni (FOSSIL) R. Tate, 1889 †
Athleta mozambicana (H.A. Rehder, 1972)
Volutoconus multiformis P. Bail & A. Limpus, 2013
Cymbiola multiplicata (FOSSIL) (A. Pannekoek, 1936 †)
Volutospina multispinosa (FOSSIL) R.B. Newton, 1922 †
Alcithoe murdochi (FOSSIL) (J. Marwick, 1926 †)
Volutilithes muricinus (FOSSIL) (J.B.P.A. Lamarck,1803 †)
Voluta musica C. Linnaeus, 1758
Voluta musica carneolata J.B.P.A. Lamarck, 1811
Voluta musica guinaica J.B.P.A. Lamarck, 1811
Voluta musica laevigata J.B.P.A. Lamarck, 1811
Voluta musica thiarella J.B.P.A. Lamarck, 1811
Pseudaulicina musicalis (FOSSIL) (J.B.P.A. Lamarck,1802 †)
Lyria musicinoides (FOSSIL) C.J. Maury, 1934 †
Volutifusus mutabilis (FOSSIL) (T.A. Conrad, 1834 †)
Neoathleta mutatus (FOSSIL) (G.P. Deshayes, 1835 †)
Musashia nagaoi (FOSSIL) T. Shikama, 1967 †
Euroscaphella namnetensis (FOSSIL) F. Van Dingenen, L. Ceulemans& B.M. Landau, 2014 †
Athleta nana (H.A. Rehder & C.S. Weaver,1974)
Ericusa naniforma P. Bail & A. Limpus, 2013
Amoria necopinata T.A. Darragh, 1983
Athleta necopinata (FOSSIL) H.H. Suter, 1917 †
Alcithoe neglectoides (FOSSIL) T.A. Darragh, 1988 †
Wangaluta neozelanica (FOSSIL) (Finlay & J. Marwick,1937 †)