Protocardia peregrinorsa (FOSSIL) (A.V.M.D. D'Orbigny,1842 †)
Cardium perobliquum (FOSSIL) Martin, 1882 †
Septocardia peruviana (FOSSIL) L.R. Cox, 1949 †
Protocardia pesolina (FOSSIL) Contejean, 1859 †
Agnocardia pessoae (FOSSIL) (C.J. Maury, 1925 †)
Trachycardium pessoae (FOSSIL) (C.J. Maury, 1924 †)
Pseudocatillus petkovici (FOSSIL) (P.S. Pavlovic, 1929 †)
Pseudocatillus pharnaci (FOSSIL) (Schwez, 1913 †)
Iheringicardium philippi (FOSSIL) (H.F.A. von Ihering,1897 †)
Protocardia philippiana (FOSSIL) R.W. Dunker, 1847 †
Vasticardium philippinense (C. Hedley, 1899)
Cardium philotarium (FOSSIL) C.J. Maury, 1924 †
Dallocardia phlyctaena (FOSSIL) (W.H. Dall, 1900 †)
Laevicardium pictum (E. Ravenel, 1861)
Protocardia piettei (FOSSIL) Fischer, 1969 †
Parvicardium pinnulatum (T.A. Conrad, 1831)
Cardium pisum (FOSSIL) R.A. Philippi, 1887 †
Parvicardium plagiomorphum (FOSSIL) A.E.M. Cossmann, 1886 †
Trachycardium planicosta (FOSSIL) D.T. Dockery, 1982 †
Americardia planicostata (W.J. Broderip& G.B. I Sowerby, 1833)
Trachycardium planicostata (FOSSIL) D.T. Dockery, 1982 †
Trachycardium plectopleura (FOSSIL) Gardner, 1926 †
Pseudocatillus pleonexia (FOSSIL) (Davidachvili, 1933 †)
Hypanis plicatum (K.E.I. von Eichwald,1829)
Nemocardium plumsteadianum (FOSSIL) (Sowerby, 1813 †)
Pseudocatillus polemonis (FOSSIL) (Schwez, 1913 †)
Microcardium pollostum (FOSSIL) W.P. Woodring, 1982 †
Europicardium polycolpatum (FOSSIL) (A.E.M. Cossmann& M.A. Peyrot, 1911 †)
Monodacna polymorpha (B.M. Logvinenko& Y.I. Starobogatov, 1967)
Ethmocardium pomeyroli (FOSSIL) (Keen 1954) †
Orthocardium porulosum (FOSSIL) (D.C. Solander, 1766 †)
Orthocardium porulosum hopneri (FOSSIL) M. Glibert & Poel, 1970 †
Orthocardium porulosum subporulosum (FOSSIL) (A.V.M.D. D'Orbigny,1850 †)
Pseudocatillus postdonacoides (FOSSIL) (Davidachvili, 1933 †)
Protocardia praecalva (FOSSIL) Dubar, 1948 †