Acrosterigma praecedens (FOSSIL) (Mayer 1858) †
Pseudocatillus praecoloratus (FOSSIL) Ebersin, 1967 † Russia
Pseudocatillus praehellesponticus (FOSSIL) Ebersin, 1967 † Russia
Cardium praepapillosum (FOSSIL) Baldi † Hungary, Bükk4 mm
Didacna praetrigonoides (FOSSIL) Nalivkin & Anissimoff,1914 †
Acrosterigma pristipleura (W.H. Dall, 1901) Panama, Chiriqui Bay28 mm
Laevicardium pristis (J.B.G.M. Bory De Saint-Vincent, 1827) Florida39,1 mm
Nemocardium probatum (T. Iredale, 1927) Japan, Wakayama62,4 mm
Mexicardia procerum (G.B. I Sowerby, 1833) California70,4 mm
Mexicardia procerum panamense (G.B. I Sowerby, 1833) Mexico, Manzanillo71 mm
Granocardium productum (FOSSIL) (J. de C. Sowerby,1832 †) Egypt, Sinai Peninsula
Didacna profundicola B.M. Logvinenko& Y.I. Starobogatov, 1966
Acrosterigma profundum E. Vidal, 1999 Philippines, Aliguay Island30,5 mm
Trachycardium propeciliare (FOSSIL) W.H. Dall, 1900 † Florida17 mm
Keenocardium prosogyratum (FOSSIL) (A.I. Kafanov, 1994 †) Russia, Sakhalin
Americardia protoaliculum (FOSSIL) H.G. Richards, 1953 † Florida31,9 mm
Trachycardium protosubrugosum (FOSSIL) Noetling, 1901 † India, Meghalaya
Didacna protracta (K.E.I. von Eichwald,1829)
Cardium proximum (FOSSIL) Dufour, 1881 † France, Brittany26 mm
Pseudocatillus pseudocatillus (FOSSIL) (Barbot de Marny, 1869 †)
Monodacna pseudocolorata (FOSSIL) Büyükmeriç& Wesselingh, 2016 † Turkey
Clinocardium pseudofastosum (FOSSIL) (S. Nomura, 1937 †) Eastern Kamchatka
Pseudocatillus pseudolaticostatus (FOSSIL) Chelidze, 1975 † Russia, Georgia
Maoricardium pseudolatum R.P.A. Voskuil& W.J.H. Onverwagt, 1991 Australia, Broome54,3 mm
Maoricardium pseudolima (J.B.P.A. Lamarck, 1819) Madagascar
Hedecardium pseudomagnum (FOSSIL) (McCoy, 1877 †) Australia, Victoria
Europicardium pseudomulticostatum (FOSSIL) (Zhizhchenko, 1934 †)
Pseudocatillus pseudosubdentatus (FOSSIL) Chelidze, 1975 † Russia, Georgia
Laevicardium puchlense (FOSSIL) Ilyina, 1949 † Western Kamchatka
Dallocardia puebloense (FOSSIL) (Anderson, 1929 †) Colombia, Tuberá Mtn
Trachycardium puelchum (FOSSIL) (Sowerby, 1846 †) Antarctica, King George Island
Tamilicardia pulchella (FOSSIL) Chiplonkar & Tapaswi 1976 †,
Pratulum pulchellum (J.E. Gray, 1843) New Zealand, Whangaroa22 mm
Cardium pulsatum (FOSSIL) Whidborne † UK, England, Somerset
Acrosterigma punctolineatum J.M. Healy& K.L. Lamprell, 1992 Philippines, Balicasag Island24 mm