Chione pachytesta (FOSSIL) Pronina, 1969 †
Chione pailasana (FOSSIL) N.E. Weisbord, 1964 †
Macrocallista palanensis (FOSSIL) V.N. Sinelnikova, 1991 †
Pitar pallescens (W.J. Broderip& G.B. I Sowerby, 1835)
Dosinia palmerae (FOSSIL) A.A. Olsson, 1931 †
Pitar palmeri Clark & Woodford, 1927
Dosinia paparoaensis (FOSSIL) J. Marwick, 1927 †
Lirophora paphia (C. Linnaeus, 1767)
Clementia papyracea (J.F. Gmelin, 1791)
Clementia papyracea vatheleti J.F. Mabille, 1901
Chione paraensis (FOSSIL) White, 1887 †
Agriopoma paraguanensis (FOSSIL) F. Hodson, 1927 †
Petricola parallela H.A. Pilsbry & H.N. Lowe,1932
Circenita paralytica (A. Römer, 1861)
Circe paralytica A. Römer, 1869
Tivelina parameces (FOSSIL) A.E.M. Cossmann& G. Pissarro, 1905 †
Eumarcia pareoraensis (FOSSIL) (H.H. Suter, 1917 †)
Clementia parinensis (FOSSIL) A.A. Olsson, 1928 †
Pitar parisanensis (FOSSIL) (M. Yokoyama) †
Pitar parisiensis (FOSSIL) (G.P. Deshayes, 1857 †)
Pitar parisiensis valida (FOSSIL) Berezovsky †
Calpitaria parisiensis (FOSSIL) A.J. Jukes-Browne 1908 †
Paphia parisiensis (FOSSIL) G.P. Deshayes, 1860 †
Lirophora parkeria (FOSSIL) L.C. Glenn, 1904 †
Notocallista parki (FOSSIL) (J. Marwick, 1927 †)
Tapes parki (FOSSIL) (P. Marshall& R. Murdoch, 1923 †)
Marwickia parthiana (FOSSIL) (J. Marwick, 1927 †)
Bassina parva (FOSSIL) J. Marwick, 1927 †
Cyclina parva (FOSSIL) Gardner, 1916 †
Chione patagonica (FOSSIL) R.A. Philippi, 1887 †
Pitar patagonicus (A.V.M.D. D'Orbigny,1842)
Timoclea patera (FOSSIL) Soregnfrei, 1958 †
Periglypta paucirugata (FOSSIL) (R. Tate, 1887 †)
Meretrix paulinae (FOSSIL) (C. Mayer, 1861 †)
Eumarcia paupercula (H.S. Holten, 1802)