Ostrea penjicus (FOSSIL) V.N. Sinelnikova, 1997 †
Cryptostrea permollis (G.B. II Sowerby, 1871)
Cubitostrea perplicata (FOSSIL) W.H. Dall, 1898 †
Ostrea perversa (FOSSIL) Cragin, 1893 †
Ostrea pesleonis E. Forbes, 1846
Planostrea pestigris (FOSSIL) (S.C.T. Hanley, 1846 †)
Cubitostrea petropolitana (FOSSIL) H.B. Stenzel & J. Twining,1957 †
Ostrea petrosa (FOSSIL) A. Fuchs, 1879 †
Ostrea peytoni (FOSSIL) H.G. Richards, 1947 †
Ostrea philippii (FOSSIL) A.E. Ortmann, 1897 †
Ostrea pileosimilis (FOSSIL) Martin, 1931 †
Ostrea pitcheri (FOSSIL) Coquand, 1869 †
Cubitostrea plicata (FOSSIL) (D.C. Solanderin G. Brander, 1766 †)
Cubitostrea plicata radiosa (FOSSIL) (G.P. Deshayes, 1832 †)
Alectryonella plicatula (J.B.P.A. Lamarck, 1801)
Ostrea plumosa (FOSSIL) Morton, 1833 †
Ostrea podagrina (FOSSIL) W.H. Dall, 1895 †
Ostrea portoricoensis (FOSSIL) Hubbard, 1920 †
Crassostrea praia (J.B.P.A. Lamarck, 1819)
Ostrea princeps (FOSSIL) Woods, 1850 †
Striostrea prismatica (Gray, 1825)
Ostrea procyonis (FOSSIL) C.J. Maury, 1924 †
Ostrea promensis (FOSSIL) Noetling, 1901 †
Ostrea prona (FOSSIL) Wood, 1861 †
Ostrea protoimbricata (FOSSIL) E.W. Vredenburg, 1928 †
Flemingostrea prudentia (FOSSIL) (White, 1877 †)
Flemingostrea prudentia (FOSSIL) (Stanton 1893) †
Pustulostrea pseudangulata (É. Lamy, 1930)
Ostrea pseudocrassissima (FOSSIL) A. Fuchs, 1878 †
Ostrea pseudodigitalina (FOSSIL) A. Fuchs, 1879 †
Ostrea pseudomarginidentata (FOSSIL) F.E. Eames, 1957 †
Ostrea pseudorissensis (FOSSIL) E.W. Vredenburg, 1928 †
Ambigostrea pseudovillei (FOSSIL) N. Malchus, 1990 †
Ostrea puelchana D'Orbigny, 1842
Ostrea pulaskensis (FOSSIL) G.F. Harris, 1892 †