Polinices otaioensis (FOSSIL) J. Marwick, 1960 †
Natica oteroi (F. Fernandes & E. Rolán,1991)
Natica othello W.H. Dall, 1908
Polinices otis W.J. Broderip & Sowerby,1829
Natica ovata (FOSSIL) Klipstein, 1843 †
Polinices ovoidea (FOSSIL) (R.A. Philippi, 1887 †)
Amauropsis oyeni (FOSSIL) Harmer †
Neverita pabloensis (FOSSIL) Clark, 1915 †
Natica pachyope (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †
Glossaulax pachystoma (FOSSIL) (L.H. Hupé, 1854 †)
Polinices paciae L. Bozzetti, 1997
Sinum pacificum (FOSSIL) Rivera, 1957 †
Gyrodes pacificum (FOSSIL) W.P. Popenoe, 1987 †
Natica pagoda (FOSSIL) E. Forbes, 1846 †
Euspira pallida (W.J. Broderip& G.B. I Sowerby, 1829)
Polinices panamaensis C.A. Récluz, 1844
Eunaticina papilla (J.F. Gmelin, 1791)
Neverita paraguanensis (FOSSIL) F. Hodson, 1927 †
Natica parahybensis (FOSSIL) C.J. Maury, 1930 †
Euspira pardoana (W.H. Dall, 1908)
Spelaenacca parilis (FOSSIL) Finlay, 1930 †
Forator parkinsoni (FOSSIL) Morris †
Natica parvuloides (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †
Polinices parvulus L. Bozzetti, 2010
Tectonatica pasinii (FOSSIL) (J.F. Bayan, 1870 †)
Falsilunatia patagonica (R.A. Philippi, 1845)
Falsilunatia patagonica soluta (A.A. Gould, 1848)
Haliotinella patinaria R.J.L. Guppy, 1876
Sinum patulum (FOSSIL) (J.P.S. Grateloup,1847 †)
Sinum paviai (FOSSIL) E. Robba, Pedriali& E. Quaggiotto, 2016 †
Tanea pavimentum (C.A. Récluz, 1844)
Natica paytensis (FOSSIL) A.A. Olsson, 1930 †
Euspira pedernalis (FOSSIL) (F.A. Roemer, 1849 †)
Gennaeosinum peleum (T. Iredale, 1929)
Euspira perforata (FOSSIL) (G.P. Deshayes, 1864 †)