Toxolasma paulus (I. Lea, 1840) Florida, Duval County26 mm
Chamberlainia paviei (P.M.A. Morelet, 1891) North Thailand
Parreysia pecten (H.B. Preston, 1912) Thailand, Phitsanulok
Actinonaias pectorosa (T.A. Conrad, 1834) Tennesse70,4 mm
Utterbackiana peggyae R.I. Johnson, 1965 Florida23 mm
Medionidus penicillatus (I. Lea, 1857) USA, Georgia
Trapezoideus peninsularis C.T. Simpson, 1900 Cambodia
Utterbackiana peninsularis A. Bogan & W.R. Hoeh,1995 Florida
Epioblasma penita (T.A. Conrad, 1834) Alabama
Psorula percompressa (E.C. Von Martens, 1887) Guatemala
Parreysia perconvexa H.B. Preston, 1912 Myanmar
Unio peregrinus B. Phillips, 1829
Hamiota perovalis (T.A. Conrad, 1834) Alabama70,6 mm
Pleurobema perovatum T.A. Conrad, 1834 Alabama33 mm
Villosa perpurpurea (I. Lea, 1861) Tennessee
Epioblasma personata (T. Say, 1829) Kentucky, Cumberland River
Amphinaias petrina (A.A. Gould, 1855) USA, Texas
Ptychorhynchus pfisteri (P.M. Heude, 1874) China, Nanking
Scabies phaselus (I. Lea, 1856) Thailand37 mm
Lamellidens phenchooganjensis H.B. Preston, 1912 Bangladesh
Unio pictorum (C. Linnaeus, 1758) Belgium38,8 mm
Unio pictorum rostratus J.B.P.A. Lamarck, 1819 Russia. Voronezh91 mm
Barynaias pigerrima (J.C.H. Crosse& P.H. Fischer, 1893) Mexico
Radiatula pilata (I. Lea, 1866) Thailand, Phitsanulok
Hyriopsis pinchoniana (P.M. Heude, 1883) Sichuan, China
Cuneopsis pisciculus (P.M. Heude, 1874) Poyang Lake, Jiangxi, China133 mm
Delphinonaias planivalvis (P.M.A. Morelet, 1851) Guatemala
Unio planus (FOSSIL) D. Mongin, 1963 † Niger37,5 mm
Venustaconcha pleasii (W.A. Marsh, 1891) Arkansas
Pleurobema plenum I. Lea, 1840 Ohio, Cincinnati
Barynaias plexus (T.A. Conrad, 1838) Guatemala
Amblema plicata (T. Say, 1817) USA, Ohio143 mm
Amblema plicata perplicata (T.A. Conrad, 1834) USA, Georgia98,5 mm
Cristaria plicata (W.E. Leach, 1815) Cambodia176 mm
Cristaria plicata spatiosa S. Clessin, 1875 China, Fujian Province260 mm