Monodilepas otagoensis H.J. Finlay, 1930
Fissurisepta oxia (R.B. Watson, 1883)
Cornisepta pacifica (E. Cowan, 1969)
Emarginula paivana (J.C.H. Crosse, 1867)
Emarginula palia (FOSSIL) W.P. Woodring, 1928 †
Diodora pamlicoensis (FOSSIL) Ward & B.W. Blackwelder,1987 †
Diodora panamensis (G.B. I Sowerby, 1835)
Montfortista panhi (J.R.C. Quoy, 1834)
Fissurisepta papillosa G. Seguenza, 1863
Tugali parmophoidea (J.R.C. Quoy, 1834)
Diodora parviforata Sowerby, 1889
Puncturella parvinobilis T.A. Okutani, K. Fujikura& T. Sasaki, 1993
Diodora parvirostris (FOSSIL) D. Merle, 1984 †
Diodora patagonica (A.V.M.D. D'Orbigny,1839)
Fissurellidea patagonica (H. Strebel, 1907)
Emarginula patula B.C. Cotton, 1930
Scutus patulum (FOSSIL) A.E.M. Cossmann, 1903 †
Hemitoma paucicostata (FOSSIL) (A.E.M. Cossmann, 1903 †)
Emarginula paucipunctata M.M. Schepman, 1913
Puncturella pauper W.H. Dall, 1927
Cranopsis pelex A. Adams, 1860
Diodora penderensis (FOSSIL) Kellum, 1926 †
Fissurella perisca (FOSSIL) DeVries, 2008 †
Lucapinella peruviana W.K. Weyrauch, 1970
Fissurella peruviana J.B.P.A. Lamarck, 1822
Fissurella peruviana occidens A.A. Gould, 1846
Diodora petasa (FOSSIL) A.A. Olsson & A. Harbison,1953 †
Scutus petrafixus (FOSSIL) Finlay, 1930 †
Diodora philippiana (R.W. Dunker, 1846)
Lucapina philippiana (H.J. Finlay, 1930)
Emarginula phrixodes W.H. Dall, 1927
Emarginula phrygium D.G. Herbert & R.N. Kilburn,1986
Diodora pica (G.B. I Sowerby, 1835)
Puncturella piccirida S. Palazzi & A. Villari,2001
Fissurella picta (J.F. Gmelin, 1791)