Scalptia nassa (J.F. Gmelin, 1791)
Cancellaria nassariformis (FOSSIL) Covacevich& D. Frassinetti, 1986 †
Babylonella nassiformis (FOSSIL) G. Seguenza, 1880 †
Babylonella nassiformis profunda (FOSSIL) C. Tabanelli, 1985 †
Antepepta nasuta (FOSSIL) Finlay & J. Marwick,1937 †
Cretadmete neglecta (FOSSIL) Blagovetshenskiy& Shumilkin, 2006 †
Bivetia neuvillei (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †
Trigonostoma nitidum (A. Adams, 1855)
Brocchinia nodosa (A.E. Verrill& S. Smith in A.E. Verrill, 1885)
Nipponaphera nodosivaricosa (E.J. Petuch, 1979)
Habesolatia nodulifera (G.B. I Sowerby, 1825)
Zeadmete nodus (FOSSIL) (Finlay, 1930 †)
Brocchinia nucleosa (FOSSIL) (J. Marwick, 1931 †)
Iphinopsis nuda (W.H. Dall, 1927)
Axelella nutrita (FOSSIL) B.M. Landau & al., 2012 †
Hertleinia obeliscus (FOSSIL) B.M. Landau & al., 2012 †
Cancellaria obesa Sowerby, 1832
Scalptia obliquata (J.B.P.A. Lamarck, 1822)
Merica oblonga (G.B. I Sowerby, 1825)
Cancellaria obtusa G.P. Deshayes, 1830
Neadmete okutanii R.E. Petit, 1974
Bonellitia olssoni (FOSSIL) Rivera, 1957 †
Cancellaria oregonensis (FOSSIL) T.A. Conrad, 1865 †
Rhomboidestoma oscitans (FOSSIL) K. Martin, 1931 †
Caveola ostium (FOSSIL) Garvie, 2013 †
Zeadmete otagoensis R.K. Dell, 1956
Bonellitia ovalis (FOSSIL) (P. Marshall, 1918 †)
Zeadmete ovalis R.K. Dell, 1956
Admete ovata E.A. Smith, 1875
Cancellaria ovata Sowerby, 1832
Euclia pacifica (FOSSIL) H.A. Pilsbry& A.A. Olsson, 1941 †
Tatara pahiensis (FOSSIL) (P. Marshall& R. Murdoch, 1921 †)
Narona pajana (FOSSIL) H.A. Pilsbry& A.A. Olsson, 1941 †
Cancellaria paleocenica (FOSSIL) Perrilliat & Cristín,2016 †
Axelella panamica (FOSSIL) (R.E. Petit, 1976 †)