Austronucula perminima (T.A. de M. Monterosato,1875)
Ennucula pernambucensis (E.A. Smith, 1885)
Nuculopsis pidhensis (FOSSIL) Reed, 1936 †
Nucula pilkeyi (FOSSIL) Ward & B.W. Blackwelder,1987 †
Nucula pisum G.B. I Sowerby, 1833
Nucula placentina (FOSSIL) J.B.P.A. Lamarck, 1819 †
Leionucula planata (FOSSIL) (Deshayes in Leymerie 1942) †,
Nucula planiculmen R.N. Kilburn, 1999
Nucula planimarginata (FOSSIL) F.B. Meek & Hayden,1857 †
Acila pleschakovi (FOSSIL) L. Krishtofovich, 1947 †
Acila plura (FOSSIL) A.A. Olsson, 1931 †
Nuculopsis poposiensis (FOSSIL) R.M. Branson, 1930 †
Acila praedivaricata (FOSSIL) T. Nagao & Huzioka,1941 †
Ennucula praenipponica (FOSSIL) (Kamada, 1962 †)
Nucula praetenta T. Iredale, 1924
Acila praevigilia (FOSSIL) Krishtofovich, 1984 †
Neonucula pratasensis (T.C. Lan & Y.C. Lee,2001)
Truncacila princeps (FOSSIL) H.G. Schenck, 1943 †
Palaeonucula prisca (FOSSIL) Kurushin, 1985 †
Palaeonucula priska (FOSSIL) Kurushin 1985 †
Ennucula privigna T. Iredale, 1939
Nucula profundorum Smith, 1885
Nucula proxima T. Say, 1820
Nucula prunicola (FOSSIL) W.H. Dall, 1898 †
Nucula pseudoexigua M. de H. Villarroel& J. Stuardo, 1998
Brevinucula pseudopunctata (FOSSIL) D.T. Dockery, 1982 †
Leionucula psjakauphensis (FOSSIL) (Khomenko, 1934 †)
Ennucula puelcha (A.V.M.D. D'Orbigny,1842)
Ennucula puelcha savatieri (J.F. Mabille& A. de Rochebrune, 1889)
Leionucula punjabensis (FOSSIL) F.E. Eames, 1951 †
Truncacila pusilla (FOSSIL) Tashiro, 1976 †
Nucula pusilla G.F. Angas, 1877
Palaeonucula putiensis (FOSSIL) J. Marwick, 1953 †
Palaeonucula qingyanensis (FOSSIL) C. Chen, 1976 †
Palaeonucula qujiangensis (FOSSIL) Xiong, 1978 †