- posadasensis, Diconoficus posadasensis Chiesa & al., 1995 † - (FICIDAE) (FOSSIL)
- posadensis, Transitrigonia posadensis (Camacho & Olivero, 1985) † - (STEINMANELLIDAE) (FOSSIL)
- posei, Siphocypraea posei Figueiras, 1985 † - (CYPRAEIDAE) (FOSSIL)
- posei, Adelomelon posei Scarabino & al., 2004 † - (VOLUTIDAE) (FOSSIL)
- poseidon, Tuchodiceras poseidon (Tozer, 1967 †) - (BEYRICHITIDAE) (FOSSIL)
- poseidon, Pachydiscus poseidon (C.J. Maury, 1930 †) - (DESMOCERATIDAE) (FOSSIL)
- poseidon, Haboroteuthis poseidon Tanabe, Misaki & Ubukata, 2015 † - (TEUTHIDA (UNASSIGNED)) (FOSSIL)
- poseidonis, Patella poseidonis Giebel † - (PATELLIDAE) (FOSSIL)
- poshitra, Anteaeolidiella poshitra L. Carmona, V. Bhave, R. Salunkhe & al., 2014 - (AEOLIDIIDAE)
- posidonia, Mangelia posidonia J.C. Melvill, 1904 - (MANGELIIDAE)
- Posidonia, Genus Posidonia Bronn, 1828 † (POSIDONIIDAE) (FOSSIL)
- Posidoniella, Genus Posidoniella Koninck, 1885 † (MYALINIDAE) (FOSSIL)
- posidoniensis, Ambigua fuscolabiata posidoniensis (W. Kobelt, 1877) - (HELICIDAE)
- posidoniformis, Claraia posidoniformis Termier & Termier, 1977 † - (PTERINOPECTINIDAE) (FOSSIL)
- POSIDONIIDAE Neumayr, 1891 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-OSTREIDA [Order]-POSIDONIOIDEA [Superfamily]) (FOSSIL)
- Posidonioceramus, Genus Posidonioceramus Walaszczyk & Cobban, 2016 † (INOCERAMIDAE) (FOSSIL)
- Posidonomya, syn of: Genus Posidonia Bronn, 1828 † (POSIDONIIDAE) (FOSSIL)
- Posidonotis, Genus Posidonotis Losacco, 1940 † (POSIDONIIDAE) (FOSSIL)
- posjetica, Crassostrea posjetica Razin, 1934 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica beringi, Lopha posjetica beringi Vialov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica beringi, Crassostrea posjetica beringi Vyalov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica newelskyi, Lopha posjetica newelskyi Vialov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica newelskyi, Crassostrea posjetica newelskyi Vyalov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica zawoikoi, Lopha posjetica zawoikoi Vialov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posjetica zawoikoi, Crassostrea posjetica zawoikoi Vyalov, 1946 - syn of: Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- posner, Cyclocardia posner L. Krishtofovich, 1984 † - syn of: Cyclocardia orientalis L. Krishtofovich, 1984 † - (CARDITIDAE) (FOSSIL)
- posneri, Yoldia posneri L. Krishtofovich, 1973 † - (YOLDIIDAE) (FOSSIL)
- posorensis, Chionopsis posorensis Olsson 1931 † - (VENERIDAE) (FOSSIL)
- Posorites, Genus Posorites T. Iredale, 1933 (CAMAENIDAE)
- posorjensis, Chionopsis posorjensis (A.A. Olsson, 1931 †) - (VENERIDAE) (FOSSIL)
- possagnense, Pachycrommium possagnense (P. Oppenheim, 1901 †) - (AMPULLINIDAE) (FOSSIL)
- possagnensis, Euspira possagnensis P. Oppenheim, 1901 † - syn of: Pachycrommium possagnense (P. Oppenheim, 1901 †) - (NATICIDAE) (FOSSIL)
- possietica, Assiminea possietica A.N. Golikov & O.V. Kussakin in A.N. Golikov & O.A. Scarlato, 1967 - (ASSIMINEIDAE)
- possietica, Buldowskia possietica V.V. Bogatov & Y.I. Starobogatov, 1996 - syn of: Anemina arcaeformis (P.M. Heude, 1877) - (UNIONIDAE)
- possoensis, Corbicula possoensis P.B. Sarasin & K.F. Sarasin, 1898 - (CYRENIDAE)
- possowensis, Pseudocyclophorus dimidiatus possowensis P.B. Sarasin & K.F. Sarasin, 1895 - (CYCLOPHORIDAE)
- Postacanthella, Genus Postacanthella Xing & al., 1984 † (HELCIONELLIDAE) (FOSSIL)
- postacanthophorum, Amoebites postacanthophorum Mesezhnikov, 1984 † - (CARDIOCERATIDAE) (FOSSIL)
- postacuta, Nakamuranaia postacuta Ding, 1982 † - (NAKAMURANAIADIDAE) (FOSSIL)
- postacuticostata, Turbonilla postacuticostata F. Sacco, 1892 - (PYRAMIDELLIDAE)
- postafricana, Guerichina postafricana Alberti, 1998 † - (PENEAUIIDAE) (FOSSIL)
- postalba, Triphora postalba P. Bartsch, 1907 - syn of: Triphora galapagensis P. Bartsch, 1907 - (TRIPHORIDAE)
- postalensis, Carinrostrina postalensis (J.F. Bayan, 1870 † †) - (STROMBIDAE) (FOSSIL)
- Postalia, Genus Postalia Oppenheim, 1896 † (PLANAXIDAE) (FOSSIL)
- postalveatus, Conus postalveatus Kellum, 1926 † - (CONIDAE) (FOSSIL)
- postalveatus, Cardiolucina postalveatus Gardner, 1943 † - (LUCINIDAE) (FOSSIL)
- postangulata, Leionucula postangulata Clark † - syn of: Acila pleschakovi L. Krishtofovich, 1947 † - (NUCULIDAE) (FOSSIL)
- postapicula, Lepetella postapicula R.K. Dell, 1990 - (LEPETELLIDAE)
- postapplanatus, Prolecanites postapplanatus Kullmann, 1963 † - (PROLECANITIDAE) (FOSSIL)
- postbrevis, Nakamuranaia postbrevis Ding, 1982 † - (NAKAMURANAIADIDAE) (FOSSIL)
- postcarbonarius, Sakmarites postcarbonarius (Karpinsky, 1874 †) - (PRONORITIDAE) (FOSSIL)
- postcarbonica, Myalinella postcarbonica (Girty, 1927 †) - (MYALINIDAE) (FOSSIL)
- postcarbonica, Mytilus postcarbonica Girty, 1927 † - syn of: Myalinella postcarbonica (Girty, 1927 †) - (MYTILIDAE) (FOSSIL)
- Postclymenia, Genus Postclymenia Schmidt , 1924 † (CYMACLYMENIIDAE) (FOSSIL)
- postconcinnus, Eoasianites postconcinnus Ruzhentsev, 1950 † - (NEOICOCERATIDAE) (FOSSIL)
- postcoronata, Galeodea postcoronata F. Sacco, 1890 - syn of: Galeodea echinophora (C. Linnaeus, 1758) - (CASSIDAE)
- postcostatum, Metacoceras postcostatum Bisat, 1930 † - (TAINOCERATIDAE) (FOSSIL)
- postcostatum, Pleuronautilus postcostatum (Bisat) † - (TAINOCERATIDAE) (FOSSIL)
- postcostatus, Alurites postcostatus Ruzhencev & Bogoslovskaya, 1978 † - (RETICULOCERATIDAE) (FOSSIL)
- postcrenulatus, Theodoxus postcrenulatus Papp, 1953 † - (NERITIDAE) (FOSSIL)
- postculmiensis, Praedaraelites postculmiensis Kullmann, 1962 † - syn of: Epicanites saharensis Pareyn, 1961 † - (DARAELITIDAE) (FOSSIL)
- postdeclivis, Modiolopsis borealis postdeclivis Foerste, 1924 † - (MODIOMORPHIDAE) (FOSSIL)
- postdiluvianus, Conus postdiluvianus A. Risso, 1826 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- postdonacoides, Pseudocatillus postdonacoides (Davidachvili, 1933 †) - (CARDIIDAE) (FOSSIL)
- posteli, Tellina posteli M. Nicklés, 1955 - (TELLINIDAE)
- postelli, Goniobasis postelli (I. Lea, 1858) - (PLEUROCERIDAE)
- postelliana, Daedalochila postelliana T.B. Bland, 1859 - (POLYGYRIDAE)
- postellii, Unio postellii I. Lea, 1858 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- postelsia, Lottia pelta postelsia unknown - (LOTTIIDAE)
- Posteobranchus, syn of: Genus Aglaja S.A. Renier, 1807 (AGLAJIDAE)
- posteocurta, Parvilucina posteocurta D.T. Dockery, 1982 † - (LUCINIDAE) (FOSSIL)
- postera, Bonellitia evulsa postera (A.H.E. Beyrich, 1856 †) - (CANCELLARIIDAE) (FOSSIL)
- postera, Cheilea postera C.R. Laws, 1936 † - (HIPPONICIDAE) (FOSSIL)
- postera, Mitra postera A. von Koenen, 1889 † - (MITRIDAE) (FOSSIL)
- postera, Eulimella postera A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- postera, Guineana postera (F.A. von Quenstedt, 1857 †) - (TRIGONIIDAE) (FOSSIL)
- postera, Veniella postera A. von Koenen, 1889 † - (VENIELLIDAE) (FOSSIL)
- Postereobranchaea, syn of: Genus Aglaja S.A. Renier, 1807 (AGLAJIDAE)
- Posteriobranchus, syn of: Genus Aglaja S.A. Renier, 1807 (AGLAJIDAE)
- posterior, Protactoclymenia posterior C.N. Lange, 1929 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- posterior, Melanopsis posterior Papp, 1953 † - (MELANOPSIDAE) (FOSSIL)
- posterior, Aulatornoceras eifliense posterior Becker, 1993 † - (TORNOCERATIDAE) (FOSSIL)
- posterius, Koninckitoides posterius (A.M. Popov, 1961 †) - (PROPTYCHITIDAE) (FOSSIL)
- Posterobranchea, syn of: Genus Aglaja S.A. Renier, 1807 (AGLAJIDAE)
- Posterobranchia, syn of: Genus Aglaja S.A. Renier, 1807 (AGLAJIDAE)
- Posterobranchus, syn of: Genus Navanax H.A. Pilsbry, 1895 (AGLAJIDAE)
- Posterodonta, Genus Posterodonta Kauffman, 1976 † (MANZANELLIDAE) (FOSSIL)
- posteroplana, Entomonotis posteroplana Westermann, 1962 † - (MONOTIDAE) (FOSSIL)
- posteroresecta, Lampeia posteroresecta G.M. Kamenev & V.A. Nadtochy, 1998 - (THRACIIDAE)
- posterum, Acutimitoceras posterum Bockwinkel & Ebbighausen, 2006 † - (GATTENDORFIIDAE) (FOSSIL)
- posterum, Bythiospeum clessini posterum (D. Geyer, 1904) - (HYDROBIIDAE)
- posterum, Uraloceras posterum Bogoslovskaya & Boiko, 2002 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- posterus, Kymatites posterus L. Waagen, 1895 † - (GYRONITIDAE) (FOSSIL)
- posterus, Subvishnuites posterus Brühwiler & al., 2012 † - (INYOITIDAE) (FOSSIL)
- posterus, Tectiretites posterus Ruzhentsev & Bogoslovskaya, 1975 † - (RETICULOCERATIDAE) (FOSSIL)
- posterus, Angulus posterus (A.H.E. Beyrich in A. von Koenen, 1868 †) - (TELLINIDAE) (FOSSIL)
- posterus, Unionites posterus Frass, 1859 † - (TRIGONODIDAE) (FOSSIL)
- Postglatziella, Genus Postglatziella Schindewolf , 1937 † (GLATZIELLIDAE) (FOSSIL)
- posthuma, Kowalia posthuma Pajchlowa, 1972 † - (GLATZIELLIDAE) (FOSSIL)
- posthuma, Helicigona posthuma H. Knipper, 1939 - (HELICIDAE)
- posthumum, Posttornoceras posthumum (Wedekind, 1918 †) - (POSTTORNOCERATIDAE) (FOSSIL)
- posthumum, Sporadoceras posthumum Wedekind, 1918 † - syn of: Posttornoceras posthumum (Wedekind, 1918 †) - (SPORADOCERATIDAE) (FOSSIL)
- posthumus, Iberus gualtieranus posthumus F. Haas, 1934 - (HELICIDAE)
- posti, Pterynotus posti W.H. Dall, 1896 † - (MURICIDAE) (FOSSIL)
- posti, Oliva posti W.H. Dall, 1915 † - (OLIVIDAE) (FOSSIL)
- Posticobia, Genus Posticobia T. Iredale, 1943 (HYDROBIIDAE)
- posticum, Pelycidion posticum (L. Gougerot, M. Fekih & J. Le Renard, 1977 †) - (PELYCIDIIDAE) (FOSSIL)
- postindica, Proptychites postindica Renz & Renz, 1948 † - syn of: Proptychitoides decipiens Spath, 1930 † - (PROPTYCHITIDAE) (FOSSIL)
- postinflexum, Sporadoceras postinflexum Pajchlowa, 1972 † - (SPORADOCERATIDAE) (FOSSIL)
- postintermedia, Paranowakia intermedia postintermedia Alberti, 1997 † - (PARANOWAKIIDAE) (FOSSIL)
- postinversum, Cheiloceras postinversum Sobolew, 1914 † - syn of: Cheiloceras rotundum (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- postlatum, Cymatonota postlatum (Ulrich, 1894 †) - (MODIOMORPHIDAE) (FOSSIL)
- postlatum, Endodesma postlatum Ulrich, 1894 † - syn of: Cymatonota postlatum (Ulrich, 1894 †) - (MODIOMORPHIDAE) (FOSSIL)
- Postligata, Genus Postligata Gardner, 1916 † (GLYCYMERIDIDAE) (FOSSIL)
- postlineata, Modiolopsis postlineata McCoy † - (MODIOMORPHIDAE) (FOSSIL)
- postmamillaris, Cassis postmamillaris F. Sacco, 1890 † - (CASSIDAE) (FOSSIL)
- postmeslerianum, Girtyoceras postmeslerianum Bruning, 1923 † - syn of: Girtyoceras meslerianum (Girty, 1909 †) - (GIRTYOCERATIDAE) (FOSSIL)
- postneglecta, Terebra postneglecta F. Sacco, 1891 † - (TEREBRIDAE) (FOSSIL)
- postneglectum, Strioterebrum postneglectum F. Sacco, 1891 † - (TEREBRIDAE) (FOSSIL)
- postnodulifera, Gonioviriatellina postnodulifera Alberti, 1997 † - (GONIONOWAKIIDAE) (FOSSIL)
- postolegi, Palaeoneilo postolegi Biakov, 2002 † - (MALLETIIDAE) (FOSSIL)
- postonodosa, Nuraya postonodosa T. Nakano, 1957 † - (MEGATRIGONIIDAE) (FOSSIL)
- postonodosa, Microtrigonia postonodosa T. Nakano, 1957 † - syn of: Nuraya postonodosa T. Nakano, 1957 † - (MEGATRIGONIIDAE) (FOSSIL)
- postorbignyana, Medlicottia postorbignyana Bogoslovskaya, 1997 † - (MEDLICOTTIIDAE) (FOSSIL)
- postornata, Arisaigia postornata McLearn, 1918 † - (MALLETIIDAE) (FOSSIL)
- postotomari, Nowakia postotomari Alberti & Salah 1980 † - (NOWAKIIDAE) (FOSSIL)
- postparma, Pinacoceras postparma Mojsisovics, 1873 † - syn of: Pinacoceras metternichi (J. Von Hauer, 1846 †) - (PINACOCERATIDAE) (FOSSIL)
- postplanum, Lyrodesma postplanum Foerste, 1924 † - (LYRODESMATIDAE) (FOSSIL)
- postplicatum, Orthodesma postplicatum Foerste, 1914 † - (MODIOMORPHIDAE) (FOSSIL)
- postpollubrum, Procerozigzag postpollubrum (Wetzel, 1937 †) - (PERISPHINCTIDAE) (FOSSIL)
- Postprolobites, Genus Postprolobites Wedekind, 1913 † (PRIONOCERATIDAE) (FOSSIL)
- postpulchella, Myophorella postpulchella Lebküchner, 1932 † - (MYOPHORELLIDAE) (FOSSIL)
- postrema, Berthella postrema R.F. Burn, 1962 - syn of: Berthella stellata (A. Risso, 1826) - (PLEUROBRANCHIDAE)
- postrema, Crisilla postrema (S. Gofas, 1990) - (RISSOIDAE)
- postremum, Planetoceras postremum Reed, 1944 † - (KONINCKIOCERATIDAE) (FOSSIL)
- postremum, Loxonema postremum J.W. Hall, 1883 † - (LOXONEMATIDAE) (FOSSIL)
- postremus, Amaltheus postremus Mattei, 1985 † - syn of: Pleuroceras salebrosum (A. Hyatt, 1867 †) - (AMALTHEIDAE) (FOSSIL)
- postremus, Glaphyrites postremus Ruzhentsev, 1978 † - (GLAPHYRITIDAE) (FOSSIL)
- postremus, Tuberes postremus Rubio & Rolán, 2017 - (TORNIDAE)
- postsakmarensis, Uddenites postsakmarensis Ruzhentsev, 1949 † - (MEDLICOTTIIDAE) (FOSSIL)
- postsimplicius, Tornoceras postsimplicius Pajchlowa, 1972 † - (TORNOCERATIDAE) (FOSSIL)
- postsolidus, Glaphyrites postsolidus Ruzhencev & Bogoslovskaya, 1978 † - (GLAPHYRITIDAE) (FOSSIL)
- poststriatum, Neoglyphioceras poststriatum Bruning, 1923 † - syn of: Goniatites granosus Portlock, 1843 † - (GONIATITIDAE) (FOSSIL)
- poststriatum, Lyrodesma poststriatum E. Emmons, 1842 † - (LYRODESMATIDAE) (FOSSIL)
- poststriatus, Modiolodon poststriatus Foerste, 1914 † - (MODIOMORPHIDAE) (FOSSIL)
- postsymmetricum, Pinacoceras postsymmetricum Mojsisovics, 1873 † - syn of: Placites postsymmetricus (Mojsisovics, 1873 †) - (PINACOCERATIDAE) (FOSSIL)
- postsymmetricus, Placites postsymmetricus (Mojsisovics, 1873 †) - (GYMNITIDAE) (FOSSIL)
- posttaurinus, Angulaticeras posttaurinus (Waehner, 1886 †) - (SCHLOTHEIMIIDAE) (FOSSIL)
- Posttornoceras, Genus Posttornoceras Wedekind , 1910 † (POSTTORNOCERATIDAE) (FOSSIL)
- POSTTORNOCERATIDAE Bogoslovsky, 1962 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-TORNOCERATOIDEA [Superfamily]) (FOSSIL)
- posttuberculatum, Pseudotemnocheilus posttuberculatum (Karpinsky, 1874 †) - (TAINOCERATIDAE) (FOSSIL)
- postturgidum, Miniseraphs postturgidum (A. De Gregorio, 1880 †) - (SERAPHSIDAE) (FOSSIL)
- postulata, Georissa postulata T. Iredale, 1937 - (HYDROCENIDAE)
- postulatus, Turbo postulatus H.G. Bronn, 1861 - syn of: Ithycythara lanceolata (C.B. Adams, 1850) - (TURBINIDAE)
- postuloclathrata, Cerithiopsis postuloclathrata Darragh, 2017 † - (CERITHIOPSIDAE) (FOSSIL)
- postuma, Palaeacmaea postuma Böhm, 1895 † - (PALAEACMAEIDAE) (FOSSIL)
- postumia, Pleurotomaria postumia Billings, 1865 † - (PLEUROTOMARIIDAE) (FOSSIL)
- postumius, Manitoulinoceras postumius (Billings, 1865 †) - (VALCOUROCERATIDAE) (FOSSIL)
- postutahensis, Vaugonia postutahensis Pugaczewska, 1978 † - (MYOPHORELLIDAE) (FOSSIL)
- postvenatum, Pintoceras postvenatum Plummer & P.H. Scott, 1937 † - (NEODIMORPHOCERATIDAE) (FOSSIL)
- postvolutus, Clidophorus postvolutus Foerste, 1924 † - (NUCULANIDAE) (FOSSIL)
- posylnyi, Spineilo posylnyi Kalishevich, 1973 † - syn of: Multidentata posylnyi (Kalishevich, 1973 †) - (MALLETIIDAE) (FOSSIL)
- posylnyi, Multidentata posylnyi (Kalishevich, 1973 †) - (NUCULANIDAE) (FOSSIL)
- posylnyi, Menneroctenia posylnyi Kalishevich, 1973 † - syn of: Multidentata posylnyi (Kalishevich, 1973 †) - (NUCULIDA (unassigned)) (FOSSIL)
- Potadoma, Genus Potadoma W.J. Swainson, 1840 (PACHYCHILIDAE)
- Potadomoides, Genus Potadomoides E.H.J. Leloup, 1953 (THIARIDAE)
- potae, Notoacmea potae T. Nakano, B.A. Marshall, J. Kennedy & C. Spencer, 2009 - (LOTTIIDAE)
- Potamacmaea, Genus Potamacmaea A.J. Peile, 1922 (LOTTIIDAE)
- potamactebia, Microcolpia potamactebia (J.R. Bourguignat, 1870) - (MELANOPSIDAE)
- Potamanax, Subgenus Pachychilus (Potamanax) H.A. Pilsbry, 1892 (PACHYCHILIDAE)
- potamia, Sonoraloa dentaxis potamia (H.A. Pilsbry, 1953) - (UROCOPTIDAE)
- Potamida, syn of: Genus Potomida W.J. Swainson, 1840 (UNIONIDAE)
- Potamides, Genus Potamides J.R. Bourguignat, 1810 (POTAMIDIDAE)
- POTAMIDIDAE H. & A. Adams, 1854 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-CERITHIOIDEA [Superfamily])
- Potamidopsis, Subgenus Potamides (Potamidopsis) E.C. Munier-Chalmas, 1900 † (POTAMIDIDAE) (FOSSIL)
- Potamilus, Genus Potamilus C.S. Rafinesque, 1819 (UNIONIDAE)
- Potamius, syn of: Genus Cavolinia P.C. Abildgaard, 1791 (CAVOLINIIDAE)
- potamius, Unio potamius J.R. Bourguignat, 1882 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- Potamocorbula, Genus Potamocorbula T. Habe, 1955 (CORBULIDAE)
- potamoides, Turritella potamoides F.J. Cantraine, 1835 † - syn of: Pyrgostylus striatulus (C. Linnaeus, 1758 †) - (TURRITELLIDAE) (FOSSIL)
- Potamojanuarius, Genus Potamojanuarius J.W. Thomé, 1976 (VERONICELLIDAE)
- Potamolithus, Genus Potamolithus H.A. Pilsbry, 1896 (LITHOGLYPHIDAE)
- Potamomya, Genus Potamomya J. de C. Sowerby, 1835 (ERODONIDAE)
- Potamophila, syn of: Genus Galatea J.G. Bruguičre, 1797 (DONACIDAE)
- Potamopisidium, syn of: Genus Pisidium L. Pfeiffer, 1821 (SPHAERIIDAE)
- Potamopyrgus, Genus Potamopyrgus W. Stimpson, 1865 (TATEIDAE)
- potanini, Laeocathaica potanini (O.F. von Möllendorff, 1899) - (BRADYBAENIDAE)
- potanini, Pseudobuliminus potanini (O.F. von Möllendorff, 1899) - (BRADYBAENIDAE)
- potanini, Phaedusa potanini O.F. von Möllendorff, 1902 - (CLAUSILIIDAE)
- potanini pretiosa, Phaedusa potanini pretiosa H. Nordsieck, 2001 - (CLAUSILIIDAE)
- potaninianus, Buliminus potaninianus E.C. Von Martens, 1874 - (ENIDAE)
- potaninianus, Buliminus potaninianus C.M.F. Ancey, 1886 - syn of: Laevozebrinus eremita (L.A. Reeve, 1849) - (ENIDAE)
- potapacoensis, Venericor potapacoensis (Clark & Martin, 1901 †) - (CARDITIDAE) (FOSSIL)
- potemicus, Fluminicola potemicus R. Hershler, H.P. Liu, T.J. Frest & E.J. Johannes, 2007 - (LITHOGLYPHIDAE)
- Potenatomus, Genus Potenatomus C.F. Laseron, 1956 (CERITHIOPSIDAE)
- potens, Clisospira potens J. Perner, 1903 † - syn of: Epiptychia potens (J. Perner, 1903 †) - (CLISOSPIRIDAE) (FOSSIL)
- potens, Poleumita potens J. Perner, 1903 † - syn of: Oriostoma potens (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- potens, Stylonema potens J. Perner, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- potens, Epiptychia potens (J. Perner, 1903 †) - (LUCIELLIDAE) (FOSSIL)
- potens, Janicula potens (Barrande, 1881 †) - (MODIOMORPHIDAE) (FOSSIL)
- potens, Lytospira potens E.F.R.K. Koken, 1896 † - (OPHILETIDAE) (FOSSIL)
- potens, Oriostoma potens (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- potens, Leptodesma potens J.W. Hall, 1883 † - (PTERINEIDAE) (FOSSIL)
- potensis, Scabricola potensis (R.P. Montrouzier, 1858) - (MITRIDAE)
- potentiae, Ambigua fuscolabiata potentiae (W. Kobelt, 1903) - (HELICIDAE)
- Poteria, Genus Poteria J.E. Gray, 1850 (NEOCYCLOTIDAE)
- poteriensis, Nassarius poteriensis F. Van Dingenen, L. Ceulemans & al., 2015 † - (NASSARIIDAE) (FOSSIL)
- POTERIIDAE - syn of Family: NEOCYCLOTIDAE
- Poterioceras, Genus Poterioceras McCoy, 1844 † (POTERIOCERATIDAE) (FOSSIL)
- POTERIOCERATIDAE Foord, 1888 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ONCOCERIDA [Order]) (FOSSIL)
- Poteriocerina, Genus Poteriocerina Foerste, 1926 † (ACLEISTOCERATIDAE) (FOSSIL)
- pothuani, Purpura pothuani J.F.T. Eydoux & L.F.A. Souleyet, 1852 - syn of: Muricodrupa fiscella pothuanii (J.F.T. Eydoux & L.F.A. Souleyet, 1852) - (MURICIDAE)
- pothuanii, Muricodrupa fiscella pothuanii (J.F.T. Eydoux & L.F.A. Souleyet, 1852) - (MURICIDAE)
- Potiarca, syn of: Genus Anadara J.E. Gray, 1847 (ARCIDAE)
- Potidoma, syn of: Genus Lepton W.H. Turton, 1822 (LASAEIDAE)
- Potidoma, syn of: Genus Epilepton W.H. Dall, 1899 (MONTACUTIDAE)
- potieri, Davidiceras potieri (Matheron, 1879 †) - (BARREMITIDAE) (FOSSIL)
- potieri, Vexillum potieri J. Drivas & M. Jay, 1989 - (COSTELLARIIDAE)
- potieri, Scaphites potieri de Grossouvre 1894 † - (SCAPHITIDAE) (FOSSIL)
- potiguar, Calliostoma potiguar A.C.G. Prado, 1999 - (CALLIOSTOMATIDAE)
- potiguara, Cerberilla potiguara V. Padula & J.F.N. da E. Delgado, 2010 - (AEOLIDIIDAE)
- potimia, Anodonta potimia R. Schröder, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- potini, Cadlina potini A.V. Martynov, 1999 - (CADLINIDAE)
- potinia, Anodonta potinia É.A.A. Locard, 1890 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- Potoceras, Genus Potoceras Hyatt, 1894 † (LIROCERATIDAE) (FOSSIL)
- potochensis, Laciniaria potochensis I. Dedov & E. Neubert, 2006 - (CLAUSILIIDAE)
- Potodoma, syn of: Subgenus Margaritifera (Pseudunio) F. Haas, 1910 (MARGARITIFERIDAE)
- potomacensis, Aporrhais potomacensis Clark & Martin, 1901 † - (APORRHAIDAE) (FOSSIL)
- potomacensis, Streptochetus potomacensis Clark & Martin, 1901 † - (FASCIOLARIIDAE) (FOSSIL)
- potomacensis, Modiolus potomacensis Clark, 1895 † - (MYTILIDAE) (FOSSIL)
- potomarchus, Glyptomelania potomarchus H.A. Pilsbry, 1892 - (PACHYCHILIDAE)
- Potomida, Genus Potomida W.J. Swainson, 1840 (UNIONIDAE)
- Potomophila, syn of: Genus Chilina J.E. Gray, 1828 (CHILINIDAE)
- potosiana, Propilsbrya potosiana (H.A. Pilsbry, 1953) - (EPIROBIIDAE)
- potosiana, Humboldtiana potosiana H.A. Pilsbry, 1927 - (HUMBOLDTIANIDAE)
- potosiana, Streptostyla potosiana W.H. Dall, 1905 - (SPIRAXIDAE)
- potosiana, Proameria potosiana (H.A. Pilsbry, 1908) - (SPIRAXIDAE)
- potosiana, Xanthonyx potosiana W.H. Dall, 1905 - (XANTHONYCHIDAE)
- potosiana tamaulipensis, Proameria potosiana tamaulipensis (H.A. Pilsbry, 1908) - (SPIRAXIDAE)
- potosianum, Cerithiomorpha potosianum (Bose, 1906 †) - (CERITHIOIDEA (UNASSIGNED)) (FOSSIL)
- potosiensis, Elimia potosiensis (I. Lea, 1841) - (PLEUROCERIDAE)
- potosiensis crandalli, Elimia potosiensis crandalli H.A. Pilsbry, 1890 - (PLEUROCERIDAE)
- potosiensis ozarkensis, Elimia potosiensis ozarkensis R.E. Call, 1886 - (PLEUROCERIDAE)
- potosiensis plebeius, Elimia potosiensis plebeius (J.G. Anthony, 1850) - (PLEUROCERIDAE)
- potosina, Exogyra potosina R. Garcia del Castillo & Aguilera, 1895 † - (GRYPHAEIDAE) (FOSSIL)
- Potosiplina, Genus Potosiplina Stinchcomb & Angeli, 2002 † (PROPLINIDAE) (FOSSIL)
- Potosites, Genus Potosites Pons & al., 2010 † (RADIOLITIDAE) (FOSSIL)
- potrerillensis, Paranditrigonia potrerillensis Reyes & A.M. Pérez, 1983 † - (MEGATRIGONIIDAE) (FOSSIL)
- potteri, Dentalium potteri K.L. Lamprell & J.M. Healy, 1998 - (DENTALIIDAE)
- potteri, Asgardaspira potteri (Rohr, 1988 †) - (OPHILETIDAE) (FOSSIL)
- potteri, Pitar potteri J.M. Healy & K.L. Lamprell, 1992 - (VENERIDAE)
- potternense, Mortoniceras potternense Spath, 1932 † - (BRANCOCERATIDAE) (FOSSIL)
- potti, Cuspidaria potti R. Sturany, 1901 - (CUSPIDARIIDAE)
- potti, Drillia potti (R. Sturany, 1903) - (DRILLIIDAE)
- pottsi, Patella pottsi F.W. Hutton, 1873 - syn of: Cellana strigilis (J.B. Hombron & C.H. Jacquinot, 1841) - (PATELLIDAE)
- pottsianus, Pachychilus pottsianus A. Hinkley, 1920 - (PACHYCHILIDAE)
- pottsvillensis, Promytilus pottsvillensis Hoare & al., 1978 † - (MYTILIDAE) (FOSSIL)
- potua, Vallonia potua G.D. Nardo, 1847 - syn of: Vallonia pulchella (O.F. Müller, 1774) - (VALLONIIDAE)
- potusmarumai, Conus potusmarumai S. Kosuge, 1980 - syn of: Embrikena pergrandis (T. Iredale, 1937) - (CONIDAE)
- poucecoupense, Dunveganoceras poucecoupense Warren & Stelck, 1940 † - (ACANTHOCERATIDAE) (FOSSIL)
- pouchadan, Hemicycla pouchadan C.M. Ibáñez & M.R. Alonso, 2007 - (HELICIDAE)
- pouchedan, Hemicycla pouchedan C.M. Ibáñez & M.R. Alonso, 2007 - (HELICIDAE)
- pouchet, Adiverticula pouchet (A. Mousson, 1872) - (HELICIDAE)
- poucheti, Marginella poucheti S.A.A. Petit De La Saussaye, 1851 - syn of: Marginella glabella (C. Linnaeus, 1758) - (MARGINELLIDAE)
- poucheti, Alvania poucheti P. Dautzenberg, 1889 - (RISSOIDAE)
- poucheti cingulifera, Alvania poucheti cingulifera P. Dautzenberg, 1889 - (RISSOIDAE)
- pouchetii, Vittina pouchetii (J.B. Hombron & C.H. Jacquinot, 1854) - (NERITIDAE)
- pouechi, Bayleia pouechi Munier-Chalmas 1873 † - (REQUIENIIDAE) (FOSSIL)
- pouli, Austrocardiella pouli P.U. Middelfart, 2002 - (CONDYLOCARDIIDAE)
- pouloensis, Tomopleura pouloensis (F.P. Jousseaume, 1883) - (BORSONIIDAE)
- poulosi, Attenuiconus poulosi (E.J. Petuch, 1993) - (CONIDAE)
- poulosi, Dauciconus poulosi E.J. Petuch, 1993 - syn of: Attenuiconus poulosi (E.J. Petuch, 1993) - (CONIDAE)
- poulosi, Prunum poulosi R.E. Lipe, 1996 - (MARGINELLIDAE)
- poulrini, Gulella poulrini (J. Germain, 1921) - (STREPTAXIDAE)
- poulseni, Acmaea poulseni J.P.J. Ravn, 1939 † - (ACMAEIDAE) (FOSSIL)
- poulseni, Granopupa poulseni C.A. Westerlund, 1887 - syn of: Granopupa granum (J.P.R. Draparnaud, 1801) - (CHONDRINIDAE)
- poulseni, Ophiceras poulseni Spath, 1935 † - (DIENEROCERATIDAE) (FOSSIL)
- poulseni, Bemella poulseni Berg-Madsen & Peel 1978 † - (HELCIONELLIDAE) (FOSSIL)
- poulseni, Paracornus poulseni Malinky & Skovsted, 2004 † - (HYOLITHIDA (UNASSIGNED)) (FOSSIL)
- poulseni, Modestospira poulseni E.L. Yochelson, 1964 † - (SINUITIDAE) (FOSSIL)
- poulsenii, Fastigiella poulsenii O.A.L. Mörch, 1877 - syn of: Fastigiella carinata L.A. Reeve, 1848 - (CERITHIIDAE)
- poulsenii, Linatella poulsenii O.A.L. Mörch, 1877 - syn of: Linatella caudata (J.F. Gmelin, 1791) - (RANELLIDAE)
- poulsoni, Roperia poulsoni (P.P. Carpenter, 1864) - (MURICIDAE)
- poulsoni, Pecten poulsoni Morton, 1834 † - (PECTINIDAE) (FOSSIL)
- poulsoni, Hinnites poulsoni T.A. Conrad, 1834 - syn of: Crassadoma gigantea (J.E. Gray, 1825) - (PECTINIDAE)
- poulsoni, Hinnites poulsoni T.A. Conrad, 1834 - syn of: Crassadoma gigantea (J.E. Gray, 1825) - (PECTINIDAE)
- poultoni, Frenguelliella poultoni H.A. Leanza, 1993 † - (TRIGONIIDAE) (FOSSIL)
- Poumea, Genus Poumea E.A. Glover & J.D. Taylor, 2007 (LUCINIDAE)
- pounamuus, Nevadaphyllites pounamuus Stevens, 2004 † - syn of: Nevadaphyllites microumbilicatus Taylor, 1998 † - (JURAPHYLLITIDAE) (FOSSIL)
- poupillieri, Cecilioides poupillieri G. Servain, 1880 - (FERUSSACIIDAE)
- poupillieri, Paralaoma poupillieri C.A. Westerlund, 1892 - syn of: Paralaoma servilis (R.J. Shuttleworth, 1852) - (PUNCTIDAE)
- poupineli, Dactylastele poupineli R.P. Montrouzier, 1875 - syn of: Calliostoma comptum (A. Adams, 1855) - (CALLIOSTOMATIDAE)
- poupineli, Trochus poupineli R.P. Montrouzier, 1875 - syn of: Calliostoma comptum (A. Adams, 1855) - (TROCHIDAE)
- poupini, Nassarius poupini W.O. Cernohorsky, 1992 - (NASSARIIDAE)
- poupini, Turbonilla poupini A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- pouponi, Kutatissites pouponi Delanoy & al., 2000 † - (ANCYLOCERATIDAE) (FOSSIL)
- pourcyensis, Coptostylus pourcyensis A.E.M. Cossmann, 1907 † - (THIARIDAE) (FOSSIL)
- pourcyensis, Eopleurotoma pourcyensis A.E.M. Cossmann, 1902 † - (TURRIDAE) (FOSSIL)
- pourtalesi, Nectoteuthis pourtalesi A.E. Verrill, 1883 - (SEPIOLIDAE)
- pourtalesi, Lamellitrochus pourtalesi (W.J. Clench & C.G. Aguayo, 1939) - (SOLARIELLIDAE)
- pourtalesiana, Syssitomya pourtalesiana P.G. Oliver, 2012 - (MONTACUTIDAE)
- pourtalesianum, Parvamussium pourtalesianum (W.H. Dall, 1886) - (PROPEAMUSSIIDAE)
- pourtalesii, Belomitra pourtalesii (W.H. Dall, 1881) - (BELOMITRIDAE)
- pourtalesii, Epitonium pourtalesii A.E. Verrill & S. Smith, 1880 - syn of: Epitonium celesti (A. Aradas, 1854) - (EPITONIIDAE)
- pourtalesii, Haliotis pourtalesii W.H. Dall, 1881 - (HALIOTIDAE)
- pourtalesii, Mangelia pourtalesii W.H. Dall, 1881 - (MANGELIIDAE)
- pourtalesii, Pleurotoma pourtalesii W.H. Dall, 1881 - syn of: Belomitra pourtalesii (W.H. Dall, 1881) - (TURRIDAE)
- pourtalesii aurantium, Haliotis pourtalesii aurantium L.R.L. Simone, 1998 - (HALIOTIDAE)
- poustagnacensis, Latirulus poustagnacensis P. Lozouet, 2015 - (FASCIOLARIIDAE)
- poustagnacensis, Rissoa poustagnacensis P. Lozouet, 1998 † - (RISSOIDAE) (FOSSIL)
- poutama, Conjectura poutama E.C. Smith, 1962 - syn of: Acremodontina poutama (E.C. Smith, 1962) - (CROSSEOLIDAE)
- poutama, Eatoniella poutama (E.C. Smith, 1962) - (EATONIELLIDAE)
- poutama, Striatestea poutama W.F. Ponder, 1967 - (RISSOIDAE)
- poutama, Acremodontina poutama (E.C. Smith, 1962) - (TROCHACLIDIDAE)
- poutiera, Octoporia poutiera J.A. Allen, 2011 - (CUSPIDARIIDAE)
- poutiersi, Cetomya poutiersi E.M. Krylova, 2001 - (POROMYIDAE)
- poutiersi, Curvella poutiersi E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (SUBULINIDAE)
- poutrini, Cleopatra poutrini J. Germain, 1909 - (PALUDOMIDAE)
- pouweri, Clathurella pouweri B.M. Landau & al., 2013 † - (CLATHURELLIDAE) (FOSSIL)
- pouwi, Trigonostoma pouwi A.W. Janssen, 1984 † - (CANCELLARIIDAE) (FOSSIL)
- pouysseguri, Bulimulus pouysseguri E.L. Holmberg, 1912 - (BULIMULIDAE)
- pouzi, Bythinella pouzi É.A.A. Locard, 1893 - syn of: Bythinella parvula É.A.A. Locard, 1893 - (BYTHINELLIDAE)
- pouzolzi, Chilostoma pouzolzi (G.P. Deshayes, 1830 ) - (HELICIDAE)
- pouzolzi bosniensis, Chilostoma pouzolzi bosniensis (W. Kobelt, 1871) - (HELICIDAE)
- pouzolzi montenegrina, Chilostoma pouzolzi montenegrina (E.A. Rossmässler, 1836) - (HELICIDAE)
- pouzouensis, Candidula pouzouensis P. Fagot, 1881 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- pouzzolzii, Helicigona pouzzolzii E.A. Rossmässler - (HELICIDAE)
- poveli, Bostryx huanucensis poveli A.S.H. Breure, 1978 - (BULIMULIDAE)
- powellense, Leptocyrtoceras powellense Ulrich & al., 1944 † - (BASSLEROCERATIDAE) (FOSSIL)
- powellensis, Hormotoma powellensis Cullison, 1944 † - syn of: Hormotoma artemesia Billings, 1865 † - (MURCHISONIIDAE) (FOSSIL)
- powelli, Mammites powelli J. Kennedy & al., 1987 † - (ACANTHOCERATIDAE) (FOSSIL)
- powelli, Pondia powelli Oder, 1932 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- powelli, Lyosoma powelli (White, 1876 †) - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- powelli, Acar powelli C.R. Laws, 1950 † - (ARCIDAE) (FOSSIL)
- powelli, Pseudaneitea powelli D.W. Burton, 1963 - (ATHORACOPHORIDAE)
- powelli, Typhlomangelia powelli (P.A. Maxwell, 1988 †) - (BORSONIIDAE) (FOSSIL)
- powelli, Oxytropidoceras powelli A.T. Young † - (BRANCOCERATIDAE) (FOSSIL)
- powelli, Pareuthria powelli W.O. Cernohorsky, 1977 - (BUCCINIDAE)
- powelli, Antarctodomus powelli R.K. Dell, 1995 - (BUCCINIDAE)
- powelli, Falsitromina powelli (R.K. Dell, 1990) - (BUCCINIDAE)
- powelli, Fax powelli C.A. Fleming, 1948 - syn of: Cominella mirabilis powelli (C.A. Fleming, 1948) - (BUCCINIDAE)
- powelli, Buccinulum pallidum powelli W.F. Ponder, 1971 - (BUCCINIDAE)
- powelli, Cominella mirabilis powelli (C.A. Fleming, 1948) - (BUCCINIDAE)
- powelli, Calliotropis powelli B.A. Marshall, 1979 - (CALLIOTROPIDAE)
- powelli, Semicassis pyrum powelli (H.J. Finlay, 1928) - (CASSIDAE)
- powelli, Cerithiopsis powelli B.A. Marshall, 1978 - (CERITHIOPSIDAE)
- powelli, Insolentia powelli A.G. Beu, 1970 † - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- powelli, Mangaoparia powelli P. Vella, 1954 † - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- powelli, Polymesoda powelli P.H. Valentich-Scott, 2012 - (CYRENIDAE)
- powelli, Clavus powelli E.A. Kay, 1979 - (DRILLIIDAE)
- powelli, Splendrillia powelli F.E. Wells, 1990 - (DRILLIIDAE)
- powelli, Turriscala powelli J. Marwick, 1931 † - (EPITONIIDAE) (FOSSIL)
- powelli, Haliotis powelli C.A. Fleming, 1952 † - (HALIOTIDAE) (FOSSIL)
- powelli, Bornia powelli M.A. Crozier, 1966 - syn of: Borniola powelli (M.A. Crozier, 1966) - (KELLIIDAE)
- powelli, Borniola powelli (M.A. Crozier, 1966) - (LASAEIDAE)
- powelli, Limatula powelli Fleming, 1978 - (LIMIDAE)
- powelli, Kurtziella powelli D.R. Shasky, 1971 - (MANGELIIDAE)
- powelli, Fusiguraleus powelli (J. Marwick, 1965 †) - (MANGELIIDAE) (FOSSIL)
- powelli, Antimargarita powelli C. Aldea, D.G. Zelaya & J.S. Troncoso, 2009 - (MARGARITIDAE)
- powelli, Amauropsis powelli R.K. Dell, 1990 - (NATICIDAE)
- powelli, Neolepton powelli R.K. Dell, 1964 - (NEOLEPTONIDAE)
- powelli, Philine powelli W.B. Rudman, 1970 - (PHILINIDAE)
- powelli, Cyclopecten powelli R.K. Dell, 1956 - (PROPEAMUSSIIDAE)
- powelli, Tropigastrites powelli Smith, 1914 † - syn of: Tropigastrites louderbacki (A. Hyatt & Smith, 1905 †) - (PROTEUSITIDAE) (FOSSIL)
- powelli, Comitas powelli H.A. Rehder & H.S. Ladd, 1973 - (PSEUDOMELATOMIDAE)
- powelli, Inquisitor powelli (R.K. Dell, 1950 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- powelli, Paracomitas augusta powelli R.K. Dell, 1956 - (PSEUDOMELATOMIDAE)
- powelli, Phrixgnathus powelli (F.M. Climo, 1971) - (PUNCTIDAE)
- powelli, Laoma powelli F.M. Climo, 1971 - syn of: Phrixgnathus powelli (F.M. Climo, 1971) - (PUNCTIDAE)
- powelli, Turbonilla powelli C.E.R. Bucknill, 1924 - (PYRAMIDELLIDAE)
- powelli, Charonia powelli B.C. Cotton, 1957 - syn of: Charonia lampas (C. Linnaeus, 1758) - (RANELLIDAE)
- powelli, Nepotilla powelli R.K. Dell, 1956 - (RAPHITOMIDAE)
- powelli, Rissoella powelli (W.F. Ponder, 1983) - (RISSOELLIDAE)
- powelli, Jeffreysiella powelli W.F. Ponder, 1983 - syn of: Rissoella powelli (W.F. Ponder, 1983) - (RISSOELLIDAE)
- powelli, Striatestea powelli C.R. Laws, 1950 † - (RISSOIDAE) (FOSSIL)
- powelli, Rissoina powelli H.J. Finlay, 1930 - (RISSOINIDAE)
- powelli, Ovaleda powelli R.K. Dell, 1950 - syn of: Yoldiella powelli (R.K. Dell, 1950) - (SAREPTIDAE)
- powelli, Brookula powelli A.H. Clarke, 1961 - (SEGUENZIOIDEA (UNASSIGNED))
- powelli, Spondylus powelli E.A. Smith, 1892 - syn of: Spondylus senegalensis K. Schreibers, 1793 - (SPONDYLIDAE)
- powelli, Parasyrinx powelli P.A. Maxwell, 1992 † - (TURRIDAE) (FOSSIL)
- powelli, Pseudoinquisitor powelli R.K. Dell, 1950 † - syn of: Inquisitor powelli (R.K. Dell, 1950 †) - (TURRIDAE) (FOSSIL)
- powelli, Dosinia powelli J. Marwick, 1948 † - (VENERIDAE) (FOSSIL)
- powelli, Alcithoe powelli (C.R. Laws, 1936 †) - (VOLUTIDAE) (FOSSIL)
- powelli, Yoldiella powelli (R.K. Dell, 1950) - (YOLDIIDAE)
- powelli raoulica, Limatula powelli raoulica C.A. Fleming, 1978 - syn of: Limatula raoulica Fleming, 1978 - (LIMIDAE)
- Powellia, syn of: Genus Ovirissoa C. Hedley, 1916 (RISSOIDAE)
- powellii, Lampsilis powellii I. Lea, 1852 - (UNIONIDAE)
- Powellina, Genus Powellina M. Huber, 2010 (CARDITIDAE)
- powellinensis, Hormotoma powellinensis Cullison, 1944 † - syn of: Hormotoma artemesia Billings, 1865 † - (MURCHISONIIDAE) (FOSSIL)
- Powelliphanta, Genus Powelliphanta O'Connor, 1945 (RHYTIDIDAE)
- Powellisetia, Genus Powellisetia W.F. Ponder, 1965 (RISSOIDAE)
- poweri, Dupontia poweri (A. Adams, 1868) - (HELICARIONIDAE)
- Poweria, syn of: Genus Dermomurex T.A. de M. Monterosato, 1890 (MURICIDAE)
- powersi, Archinacella powersi Ulrich & Scofield, 1897 † - (ARCHINACELLIDAE) (FOSSIL)
- powersi, Amphidromus powersi J. Abbas & J.H. Powers, 2007 - (CAMAENIDAE)
- powersi, Idonearca powersi L.W. Stephenson, 1941 † - (CUCULLAEIDAE) (FOSSIL)
- powersi, Costelloleda powersi (R.E. Dickerson, 1919 †) - (NUCULANIDAE) (FOSSIL)
- powersi, Centrotarphyceras powersi Ulrich & al., 1942 † - (TARPHYCERATIDAE) (FOSSIL)
- powhatani, Turbonilla powhatani J. Henderson & P. Bartsch, 1914 - (PYRAMIDELLIDAE)
- powisiana, Bela powisiana (P. Dautzenberg, 1887) - (MANGELIIDAE)
- powisiana, Natica powisiana K. Martin, 1905 † - syn of: Polinices cumingianus madioensis C.O. Van Regteren Altena, 1941 † - (NATICIDAE) (FOSSIL)
- powisiana, Neritina powisiana (C.A. Récluz, 1843) - (NERITIDAE)
- powisiana, Raphitoma powisiana P. Dautzenberg, 1887 - syn of: Bela powisiana (P. Dautzenberg, 1887) - (RAPHITOMIDAE)
- powisiana mingoranceae, Bela powisiana mingoranceae J.M. Martìn Perez & J.L. Vera-Peláez, 2007 - (MANGELIIDAE)
- powisianus, Bulimus powisianus S.A.A. Petit De La Saussaye, 1843 - syn of: Methorthalicus powisianus (S.A.A. Petit De La Saussaye, 1843) - (BULIMULIDAE)
- powisianus, Polinices powisianus C.A. Récluz, 1844 - (NATICIDAE)
- powisianus, Methorthalicus powisianus (S.A.A. Petit De La Saussaye, 1843) - (ORTHALICIDAE)
- powisii, Rimellopsis powisii (S.A.A. Petit De La Saussaye, 1840) - (ROSTELLARIIDAE)
- powisii abyssicola, Rimellopsis powisii abyssicola (M.M. Schepman, 1909) - (ROSTELLARIIDAE)
- powisii laurenti, Rimellopsis powisii laurenti R. Duchamps, 1992 - (ROSTELLARIIDAE)
- powriei, Cephalaspis powriei E.R. Lankester, 1870 † - (CEPHALASPIDAE) (FOSSIL)
- powwowensis, Apachella powwowensis Batten, 1995 † - (GOSSELETINIDAE) (FOSSIL)
- poyaensis, Leionucula poyaensis S. Freneix, 1958 † - syn of: Leionucula suboblonga (R.O. Wilckens, 1907 †) - (NUCULIDAE) (FOSSIL)
- poyensis, Placostylus poyensis J.C.H. Crosse, 1894 - (BOTHRIEMBRYONTIDAE)
- poyuensis, Camaena poyuensis W.C. Zhou, Wang & Ding, 2016 - (CAMAENIDAE)
- pozaryskii, Helicaulax pozaryskii Abdel-Gawad, 1986 † - (APORRHAIDAE) (FOSSIL)
- pozoensis, Clavilithes pozoensis A.A. Olsson, 1928 † - (FASCIOLARIIDAE) (FOSSIL)
- prabahari, Sepia prabahari N. Neethiselvan & V.K. Venkataramani, 2002 - (SEPIIDAE)
- pradeanus, Trypanostylus pradeanus E.A.L. Kittl, 1899 † - (COELOSTYLINIDAE) (FOSSIL)
- pradellensis, Diptychochilus pradellensis A.E.M. Cossmann, 1908 † - (POTAMIDIDAE) (FOSSIL)
- pradense, Saloceras pradense (Thoral, 1935 †) - (EOTHINOCERATIDAE) (FOSSIL)
- pradoana, Weyla pradoana (Verneuil & Collomb, 1853 †) - (NEITHEIDAE) (FOSSIL)
- Pradoxa, Genus Pradoxa F. Fernandes & E.M. Rolán, 1993 (MURICIDAE)
- Pradoxsa, syn of: Genus Pradoxa F. Fernandes & E.M. Rolán, 1993 (MURICIDAE)
- pradyumna, Leiophyllites pradyumna (Diener, 1895 †) - (USSURITIDAE) (FOSSIL)
- Praeactinocamax, Genus Praeactinocamax Naidin , 1964 † (BELEMNITELLIDAE) (FOSSIL)
- praeacuta, Synthopsis praeacuta A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- praeacuta, Palaeoneilo praeacuta (Klipstein, 1843 †) - (MALLETIIDAE) (FOSSIL)
- praeacuta, Pseudozygopleura praeacuta Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- praeacutus, Mytilus praeacutus Klipstein, 1843 † - syn of: Mytilus muensteri Klipstein, 1843 † - (MYTILIDAE) (FOSSIL)
- praeadamitica, Ostrea praeadamitica P.F. Röding, 1798 - syn of: Hyotissa sinensis (J.F. Gmelin, 1791) - (OSTREIDAE)
- praeaequinoctialis, Pseudozonaria praeaequinoctialis B.M. Landau & Groves, 2011 † - (CYPRAEIDAE) (FOSSIL)
- praealta, Kaliella praealta H.A. Pilsbry & Y. Hirase, 1903 - syn of: Trochochlamys praealta (H.A. Pilsbry, 1902) - (CHRONIDAE)
- praealta, Naticopsis praealta J. Wanner, 1922 † - (DELPHINULOPSIDAE) (FOSSIL)
- praealta, Diastole praealta H.A. Pilsbry, 1902 - syn of: Trochochlamys praealta (H.A. Pilsbry, 1902) - (EUCONULIDAE)
- praealta, Trochochlamys praealta (H.A. Pilsbry, 1902) - (HELICARIONIDAE)
- praealta izushichtoensis, Trochochlamys praealta izushichtoensis (H.A. Pilsbry & Y. Hirase, 1903) - (HELICARIONIDAE)
- Praealtus, Genus Praealtus L. Allcock, M.A. Collins, U. Piatkowski & M. Vecchione, 2004 (OCTOPODIDAE)
- praeambiguus, Tritia praeambiguus (J. Brown & H.A. Pilsbry, 1913 †) - (NASSARIIDAE) (FOSSIL)
- Praeamonotis, Genus Praeamonotis Waterhouse, 1987 † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- praeanapetes, Polygona praeanapetes B.M. Landau & G.J. Vermeij, 2012 † - (FASCIOLARIIDAE) (FOSSIL)
- praeangusta, Ensipteria praeangusta (Frech, 1911 †) - (PTERIIDA (UNASSIGNED)) (FOSSIL)
- praeannulatus, Valenciennius praeannulatus Sukhova, 1955 † - (LYMNAEIDAE) (FOSSIL)
- Praeanomalodonta, Genus Praeanomalodonta Isberg, 1934 † (AMBONYCHIIDAE) (FOSSIL)
- Praeanomalodontata, Genus Praeanomalodontata Isberg, 1934 † (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- Praearca, syn of: Genus Sluha Barrande, 1881 † (MALLETIIDAE) (FOSSIL)
- praearcinella, Arcinella praearcinella C.J. Maury, 1924 † - (CHAMIDAE) (FOSSIL)
- Praeaucellina, Genus Praeaucellina Crame, 1996 † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- praebalatonensis, Platycuccoceras praebalatonensis Bucher, 1988 † - (BALATONITIDAE) (FOSSIL)
- Praebarrettia, Genus Praebarrettia Trechmann, 1924 † (HIPPURITIDAE) (FOSSIL)
- Praebigotites, Genus Praebigotites Besnosov & Mikhaylova, 1981 † (PERISPHINCTIDAE) (FOSSIL)
- praebinodosa, Winterbergiella praebinodosa Heidelberger, 2001 † - (GOSSELETINIDAE) (FOSSIL)
- praebisecta, Thyasira praebisecta L. Krishtofovich, 1984 † - syn of: Conchocele bisecta (T.A. Conrad, 1849) - (THYASIRIDAE) (FOSSIL)
- praebisecta quadrata, Thyasira praebisecta quadrata L. Krishtofovich, 1984 † - syn of: Conchocele bisecta (T.A. Conrad, 1849) - (THYASIRIDAE) (FOSSIL)
- praebisecta rhomboides, Thyasira praebisecta rhomboides L. Krishtofovich, 1984 † - syn of: Conchocele bisecta (T.A. Conrad, 1849) - (THYASIRIDAE) (FOSSIL)
- praeboucardi, Arca praeboucardi V.N. Sinelnikova, 1990 † - syn of: Arca boucardi F.P. Jousseaume, 1894 - (ARCIDAE) (FOSSIL)
- praebouilleti, Stagnicola praebouilleti W.R. Schlickum, 1970 † - (LYMNAEIDAE) (FOSSIL)
- Praebuchia, Genus Praebuchia Zakharov, 1981 † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- praecallosa, Cryptospira praecallosa H.C. Higgins, 1876 - syn of: Cryptospira strigata (L.W. Dillwyn, 1817) - (MARGINELLIDAE)
- praecallosa, Nassa praecallosa F.P. Marrat, 1877 - syn of: Nassarius splendidulus R.W. Dunker, 1846 - (NASSARIIDAE)
- praecalva, Protocardia praecalva Dubar, 1948 † - (CARDIIDAE) (FOSSIL)
- praecalva, Crassacuna praecalva (C. Hedley, 1909) - (CONDYLOCARDIIDAE)
- praecalva, Cuna praecalva C. Hedley, 1909 - syn of: Crassacuna praecalva (C. Hedley, 1909) - (CONDYLOCARDIIDAE)
- Praecanariella, syn of: Genus Canariella P. Hesse, 1918 (CANARIELLIDAE)
- Praecanthochiton, syn of: Genus Chelodes Davidson & King, 1874 † (MATTHEVIIDAE) (FOSSIL)
- Praecantor, syn of: Genus Afer T.A. Conrad, 1858 (BUCCINIDAE)
- Praecaprina, Genus Praecaprina Paquier, 1905 † (HIPPURITIDA (UNASSIGNED)) (FOSSIL)
- Praecaprotina, Genus Praecaprotina Yabe & Nagao, 1926 † (POLYCONITIDAE) (FOSSIL)
- PRAECARDIIDAE R. Hoernes, 1884 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-CYRTODONTIDA [Order]-PRAECARDIOIDEA [Superfamily]) (FOSSIL)
- PRAECARDIOIDEA (UNASSIGNED) - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-CYRTODONTIDA [Order]-PRAECARDIOIDEA [Superfamily]) (FOSSIL)
- Praecardiomya, Genus Praecardiomya Awad, 1952 † (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- Praecardium, Genus Praecardium Barrande, 1881 † (PRAECARDIIDAE) (FOSSIL)
- praecaudata, Yoldia praecaudata Evseev, 1956 † - syn of: Yoldia caudata Khomenko, 1973 † - (YOLDIIDAE) (FOSSIL)
- praecedens, Bivetiella cancellata praecedens (A.H.E. Beyrich, 1856 †) - (CANCELLARIIDAE) (FOSSIL)
- praecedens, Acrosterigma praecedens (Mayer 1858) † - (CARDIIDAE) (FOSSIL)
- praecedens, Clavatula glaberrima praecedens M.A. Peyrot, 1931 † - (CLAVATULIDAE) (FOSSIL)
- praecedens, Fasciolaria tarbelliana praecedens M.A. Peyrot, 1925 † - (FASCIOLARIIDAE) (FOSSIL)
- praecedens, Loxonema praecedens J. Perner, 1903 † - (LOXONEMATIDAE) (FOSSIL)
- praecedens, Lucinoma borealis praecedens (A. von Koenen, 1868) † - (LUCINIDAE) (FOSSIL)
- praecedens, Davidaschvilia intermedia praecedens (N.I. Andrusov, 1910 †) - (LUTETIIDAE) (FOSSIL)
- praecedens, Davidaschvilia intermedia praecedens Merklin, 1950 † - (LUTETIIDAE) (FOSSIL)
- praecedens, Nucella praecedens (L.M.D. Bellardi, 1882 †) - (MURICIDAE) (FOSSIL)
- praecedens, Nassarius praecedens (L.M.D. Bellardi, 1882 †) - (NASSARIIDAE) (FOSSIL)
- praecedens, Zitteloceras praecedens Flower, 1952 † - (ONCOCERATIDAE) (FOSSIL)
- praecedens, Petrochus praecedens Horný, 1992 † - (PSEUDOPHORIDAE) (FOSSIL)
- praecedens, Sinezona praecedens P. Lozouet, 1998 † - (SCISSURELLIDAE) (FOSSIL)
- praecedens, Persististrombus praecedens (Schaffer, 1912 †) - (STROMBIDAE) (FOSSIL)
- praecedens, Circulus praecedens (A. von Koenen, 1882 †) - (TORNIDAE) (FOSSIL)
- praecellens, Turriconus praecellens (A. Adams, 1855) - (CONIDAE)
- praecellens, Isaurica praecellens G. Nägele, 1901 - (HELICIDAE)
- praecellens, Crenella praecellens J.C. Melvill & R. Standen, 1907 - syn of: Rhomboidella vaillanti (A. Issel, 1869) - (MYTILIDAE)
- praecellens, Solamen praecellens J.C. Melvill & R. Standen, 1907 - syn of: Rhomboidella vaillanti (A. Issel, 1869) - (MYTILIDAE)
- praecellens, Kaiparathina praecellens C.R. Laws, 1941 † - (TURBINIDAE) (FOSSIL)
- praecellens, Bactrospira perattenuata praecellens (H.A. Pilsbry & J. Brown, 1917 †) - (TURRITELLIDAE) (FOSSIL)
- praecellens, Bactrospira altilira praecellens (H.A. Pilsbry & J. Brown, 1917 †) - (TURRITELLIDAE) (FOSSIL)
- praecelsa, Telophaedusa praecelsa (P.V. Gredler, 1884) - (CLAUSILIIDAE)
- praecelsus, Bothriembryon praecelsus T. Iredale, 1939 - (BOTHRIEMBRYONTIDAE)
- praeceps, Agoniatites praeceps Chlupac & Turek, 1983 † - (AGONIATITIDAE) (FOSSIL)
- praeceps, Chlupacites praeceps (Chlupac & Turek, 1983 †) - (LATANARCESTIDAE) (FOSSIL)
- praeceps, Osteopelta praeceps B.A. Marshall, 1994 - (OSTEOPELTIDAE)
- praeceps, Seguenzia praeceps B.A. Marshall, 1991 - (SEGUENZIIDAE)
- praecessa, Brotia praecessa (G.P. Deshayes, 1861 †) - (PACHYCHILIDAE) (FOSSIL)
- praecessus, Turritella praecessus J.L.M. Defrance, 1828 † - (TURRITELLIDAE) (FOSSIL)
- Praechlamys, Genus Praechlamys Allasinaz , 1972 † (PECTINIDAE) (FOSSIL)
- Praecia, Subgenus Trochus (Praecia) J.E. Gray, 1857 † (TROCHIDAE) (FOSSIL)
- praecida, Rissoina praecida (C.F. Laseron, 1956) - (RISSOINIDAE)
- praecida, Rissolina praecida (C.F. Laseron, 1956) - syn of: Rissoina praecida (C.F. Laseron, 1956) - (RISSOINIDAE)
- praecidecosta, Pisinna praecidecosta (W.F. Ponder, 1965) - (ANABATHRIDAE)
- praecinctus, Ptychopotamides praecinctus (A.E.M. Cossmann, 1889 †) - (POTAMIDIDAE) (FOSSIL)
- praecinctus lamarckianus, Ptychopotamides praecinctus lamarckianus Renard, 1994 † - (POTAMIDIDAE) (FOSSIL)
- praecingulata, Nucella praecingulata S.H. Haughton, 1932 - (MURICIDAE)
- praecipitis, Austropyrgus praecipitis A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- praecipitum, Gyronema praecipitum Ulrich & Scofield, 1897 † - syn of: Cyclonema praecipitum (Ulrich & Scofield, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- praecipitum, Cyclonema praecipitum (Ulrich & Scofield, 1897 †) - (PLATYCERATIDAE) (FOSSIL)
- praecipta, Cyrtodontula praecipta (Ulrich, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- praecipta, Whitella praecipta Ulrich, 1890 † - syn of: Cyrtodontula praecipta (Ulrich, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- praecipua, Isabellaria praecipua I. Sajó, 1968 - (CLAUSILIIDAE)
- praecipua, Morula praecipua H.A. Rehder, 1980 - (MURICIDAE)
- praecipua, Typhlosyrinx praecipua (E.A. Smith, 1899) - (RAPHITOMIDAE)
- praecipua serviana, Isabellaria praecipua serviana H. Nordsieck, 1972 - (CLAUSILIIDAE)
- praecipuum, Athanatoceras praecipuum P.A. Zhuravleva, 1972 † - syn of: Chrysoceras tumidum (P.A. Zhuravleva, 1972 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- praecipuus, Conus praecipuus R.C. Hoerle, 1976 † - (CONIDAE) (FOSSIL)
- praecisa, Bathytoma praecisa (J. Marwick, 1931 †) - (BORSONIIDAE) (FOSSIL)
- praecisa, Venericardia praecisa W.H. Dall, 1903 † - (CARDITIDAE) (FOSSIL)
- praecisa, Glossus praecisa White, 1887 † - (GLOSSIDAE) (FOSSIL)
- praecisa, Mesodesma praecisa L.A. Reeve, 1854 - syn of: Atactodea cuneata (J.B.P.A. Lamarck, 1818) - (MESODESMATIDAE)
- praecisa, Mya praecisa A.A. Gould, 1850 - syn of: Mya truncata C. Linnaeus, 1758 - (MYIDAE)
- praecisus, Hiatella praecisus G. Montagu, 1803 - syn of: Hiatella arctica (C. Linnaeus, 1767) - (HIATELLIDAE)
- praecisus, Mytilus praecisus G. Montagu, 1803 - syn of: Hiatella arctica (C. Linnaeus, 1767) - (MYTILIDAE)
- praeclara, Albinaria praeclara (L. Pfeiffer, 1853) - (CLAUSILIIDAE)
- praeclara, Nesiophaedusa praeclara (A.A. Gould, 1859) - (CLAUSILIIDAE)
- praeclara, Splendrillia praeclara (J.C. Melvill, 1893) - (DRILLIIDAE)
- praeclara, Splendrillia praeclara (G.B. III Sowerby, 1915) - (DRILLIIDAE)
- praeclara, Microcolpia praeclara J.R. Bourguignat, 1884 - syn of: Melanopsis cornea Pfeiffer, 1828 - (MELANOPSIDAE)
- praeclara, Neritopsis praeclara Seguenza, 1885 † - (NERITOPSIDAE) (FOSSIL)
- praeclara, Bridouxia praeclara (J.R. Bourguignat, 1885) - (PALUDOMIDAE)
- praeclara, Physopsis praeclara J.R. Bourguignat, 1879 - (PLANORBIDAE)
- praeclara, Pleurotoma praeclara J.C. Melvill, 1893 - syn of: Splendrillia praeclara (J.C. Melvill, 1893) - (TURRIDAE)
- praeclara, Pseudanodonta praeclara J.R. Bourguignat, 1880 - syn of: Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- praeclara, Torrecoptis praeclara C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- praeclara clarissima, Albinaria praeclara clarissima (H. Nordsieck, 1972) - (CLAUSILIIDAE)
- praeclara drakakisi, Albinaria praeclara drakakisi H. von Maltzan, 1884 - (CLAUSILIIDAE)
- praeclara okinoerabensis, Albinaria praeclara okinoerabensis H.A. Pilsbry, 1905 - (CLAUSILIIDAE)
- praeclara parallelifera, Albinaria praeclara parallelifera (O. Böttger, 1878) - (CLAUSILIIDAE)
- praeclara paucicosta, Albinaria praeclara paucicosta (O. Böttger, 1883) - (CLAUSILIIDAE)
- praeclara rudis, Albinaria praeclara rudis (L. Pfeiffer, 1864) - (CLAUSILIIDAE)
- praeclarum, Neobuccinum praeclarum H. Strebel, 1908 - syn of: Neobuccinum eatoni (E.A. Smith, 1875) - (BUCCINIDAE)
- praeclarum, Epitonium praeclarum A. Adams, 1861 - (EPITONIIDAE)
- praeclarum, Morum praeclarum (J.C. Melvill, 1919) - (HARPIDAE)
- praeclarum, Oniscidia praeclarum J.C. Melvill, 1919 - syn of: Morum praeclarum (J.C. Melvill, 1919) - (HARPIDAE)
- praeclarus, Conus praeclarus A. Feneaux, 1942 - syn of: Vituliconus planorbis (I. von Born, 1778) - (CONIDAE)
- praeclarus, Janolus praeclarus (P. Bouchet, 1975) - (PROCTONOTIDAE)
- praeclarus, Tulites praeclarus (S.S. Buckman, 1921 †) - (TULITIDAE) (FOSSIL)
- praeclausa, Natica hoernesi praeclausa F. Kautsky, 1925 † - (NATICIDAE) (FOSSIL)
- praeclava, Cuna praeclava C. Hedley, 1909 - syn of: Crassacuna praecalva (C. Hedley, 1909) - (CONDYLOCARDIIDAE)
- praeco, Anabathron praeco (C.R. Laws, 1941 †) - (ANABATHRIDAE) (FOSSIL)
- praeco, Plectostoma praeco (W.S.S. Van Benthem-Jutting, 1961) - (DIPLOMMATINIDAE)
- praeco, Rhabdocolpus praeco (F. Haas, 1953 †) - (PROCERITHIIDAE) (FOSSIL)
- praecognita, Nerita praecognita C.B. Adams, 1845 - syn of: Nerita fulgurans J.F. Gmelin, 1791 - (NERITIDAE)
- praecognita, Arcopagia praecognita Staadt in A.E.M. Cossmann, 1913 † - (TELLINIDAE) (FOSSIL)
- praecoloratus, Pseudocatillus praecoloratus Ebersin, 1967 † - (CARDIIDAE) (FOSSIL)
- praeconfucii, Leiophyllites praeconfucii Renz & Renz, 1948 † - syn of: Leiophyllites variabilis (Spath, 1934 †) - (USSURITIDAE) (FOSSIL)
- Praeconia, Genus Praeconia Stoliczka, 1871 † (ASTARTIDAE) (FOSSIL)
- praeconia, Iberellus praeconia C.A. Westerlund, 1902 - syn of: Iberellus hispanicus (E.A. Rossmässler, 1838) - (HELICIDAE)
- praeconjunctus, Clavilithes praeconjunctus A.E.M. Cossmann, 1923 † - (FASCIOLARIIDAE) (FOSSIL)
- praeconsors, Tanea praeconsors (Finlay, 1924 †) - (NATICIDAE) (FOSSIL)
- praeconsors, Hindsiclava praeconsors (Gardner, 1938 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- praecophinodes, Mauidrillia praecophinodes (H.H. Suter, 1917 †) - (HORAICLAVIDAE) (FOSSIL)
- praecoquus, Scaphites praecoquus Cobban, 1951 † - (SCAPHITIDAE) (FOSSIL)
- praecorneus, Planorbarius praecorneus (Fischer & J.R. Tournouër, 1873 †) - (PLANORBIDAE) (FOSSIL)
- praecoronoides, Kammerkarites praecoronoides Guex, 1980 † - (SCHLOTHEIMIIDAE) (FOSSIL)
- praecosis, Goniasma praecosis Licharev, 1977 † - (GONIASMATIDAE) (FOSSIL)
- praecostatus, Archaeozonites praecostatus (Jooss, 1918) † - (ARCHAEOZONITIDAE) (FOSSIL)
- praecostulata, Syrnola praecostulata E. Saurin, 1959 - (PYRAMIDELLIDAE)
- praecox, Metoicoceras praecox F. Haas, 1949 † - (ACANTHOCERATIDAE) (FOSSIL)
- praecox, Clavator praecox (E. Fischer-Piette, Ch.P. Blanc & F. Salvat, 1963) - (ACAVIDAE)
- praecox, Plathystimulus praecox (A. Wiktor, 1966) - (AGRIOLIMACIDAE)
- praecox, Aviculopecten praecox (L. Waagen, 1881 †) - (AVICULOPECTINIDAE) (FOSSIL)
- praecox, Nannobelus praecox Schwegler, 1939 † - syn of: Schwegleria praecox (Schwegler, 1939 †) - (BELEMNITIDA (unassigned)) (FOSSIL)
- praecox, Cominella praecox (Finlay, 1926 †) - (BUCCINIDAE) (FOSSIL)
- praecox, Digonioceras praecox Rulleau, 2008 † - (CENOCERATIDAE) (FOSSIL)
- praecox, Collignoniceras praecox (F. Haas, 1946 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- praecox, Arcanoceras praecox Ruzhentsev, 1966 † - (EOGONIOLOBOCERATIDAE) (FOSSIL)
- praecox, Anahoplites praecox (Spath 1925 †) - (HOPLITIDAE) (FOSSIL)
- praecox, Myophoria praecox L. Waagen, 1881 † - syn of: Lyroschizodus praecox (L. Waagen, 1881 †) - (MYOPHORIIDAE) (FOSSIL)
- praecox, Nordophiceratoides praecox Zakharov & Smyshlyaeva, 2016 † - (NORDOPHICERATIDAE) (FOSSIL)
- praecox, Antispira praecox J. Perner, 1903 † - (ONYCHOCHILIDAE) (FOSSIL)
- praecox, Schwegleria praecox (Schwegler, 1939 †) - (PASSALOTEUTHIDIDAE) (FOSSIL)
- praecox, Pecten praecox L. Waagen, 1881 † - syn of: Aviculopecten praecox (L. Waagen, 1881 †) - (PECTINIDAE) (FOSSIL)
- praecox, Pseudoprobeloceras praecox Bockwinkel, Becker & Ebbighausen, 2013 † - (PONTICERATIDAE) (FOSSIL)
- praecox, Lyroschizodus praecox (L. Waagen, 1881 †) - (SCHIZODIDAE) (FOSSIL)
- praecox, Schizodus praecox L. Waagen, 1881 † - syn of: Lyroschizodus praecox (L. Waagen, 1881 †) - (SCHIZODIDAE) (FOSSIL)
- praecox, Vitrinella praecox H.A. Pilsbry & J.T.L. McGinty, 1946 - syn of: Vitrinella helicoidea Adams, 1850 - (TORNIDAE)
- praecox, Glyphyalinia praecox H.B. Baker, 1930 - (ZONITIDAE)
- Praectenodonta, Genus Praectenodonta Philip, 1962 † (CTENODONTIDAE) (FOSSIL)
- praeculta, Hemiplecta praeculta E.A. Smith, 1895 - (ARIOPHANTIDAE)
- praecuratus, Bathytormus praecuratus (A.E.M. Cossmann, 1892 †) - (CRASSATELLIDAE) (FOSSIL)
- praecurionii, Fuciniceras praecurionii Geczy, 1976 † - (HILDOCERATIDAE) (FOSSIL)
- praecurrens, Eunemopsis praecurrens E.A.L. Kittl, 1894 † - (EUNEMOPSIDAE) (FOSSIL)
- praecurrens, Holmiceras praecurrens (Holm, 1891 †) - (LITUITIDAE) (FOSSIL)
- praecursa, Ambonychia praecursa Ulrich 1893 † - (AMBONYCHIIDAE) (FOSSIL)
- praecursor, Watinoceras coloradoense praecursor Wright & J. Kennedy, 1981 † - (ACANTHOCERATIDAE) (FOSSIL)
- praecursor, Anarcestes praecursor (Frech, 1897 †) - (ANARCESTIDAE) (FOSSIL)
- praecursor, Sutneria praecursor Dietrich, 1940 † - (ASPIDOCERATIDAE) (FOSSIL)
- praecursor, Astarte goldfussi praecursor M. Glibert, 1957 - (ASTARTIDAE)
- praecursor, Parentites praecursor Bogoslovsky, 1961 † - (AUGURITIDAE) (FOSSIL)
- praecursor, Bakevelloides praecursor (F.A. von Quenstedt, 1858 †) - (BAKEVELLIIDAE) (FOSSIL)
- praecursor, Beloceras praecursor Frech, 1902 † - (BELOCERATIDAE) (FOSSIL)
- praecursor, Gymnotoceras praecursor Bucher, 1992 † - (BEYRICHITIDAE) (FOSSIL)
- praecursor, Taeniodon praecursor Schloenbach, 1862 † - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- praecursor, Cominella praecursor R.O. Wilckens, 1905 † - syn of: Sulcobuccinum prominentum Del Rio, 2012 † - (BUCCINIDAE) (FOSSIL)
- praecursor, Silberlingitoides praecursor (Monnet & Bucher, 2005 †) - (CERATITIDAE) (FOSSIL)
- praecursor, Cirsochilus praecursor A.E.M. Cossmann, 1907 - (COLLONIIDAE)
- praecursor, Atilia praecursor M. Yokoyama, 1922 † - (COLUMBELLIDAE) (FOSSIL)
- praecursor, Epicanites praecursor Fromaget, 1931 † - (DARAELITIDAE) (FOSSIL)
- praecursor, Ophiceras praecursor (Griesbach 1880 †) - (DIENEROCERATIDAE) (FOSSIL)
- praecursor, Eatoniella praecursor C.R. Laws, 1939 † - (EATONIELLIDAE) (FOSSIL)
- praecursor, Paramicroderoceras praecursor (D. Geyer, 1886 †) - (EODEROCERATIDAE) (FOSSIL)
- praecursor, Goniatites praecursor Frech, 1897 † - syn of: Anarcestes praecursor (Frech, 1897 †) - (GONIATITIDAE) (FOSSIL)
- praecursor, Holopea praecursor E.F.R.K. Koken & J. Perner, 1925 † - (HOLOPEIDAE) (FOSSIL)
- praecursor, Hydrobia praecursor Sandberger † - (HYDROBIIDAE) (FOSSIL)
- praecursor, Foordiceras praecursor Girty, 1909 † - syn of: Pleuronautilus praecursor (Girty, 1909 †) - (KONINCKIOCERATIDAE) (FOSSIL)
- praecursor, Myllita praecursor (C.R. Laws, 1940 †) - (LASAEIDAE) (FOSSIL)
- praecursor, Silberlingeria praecursor Monnet & Bucher, 2005 † - (LONGOBARDITIDAE) (FOSSIL)
- praecursor, Luciella praecursor J. Perner, 1907 † - (LUCIELLIDAE) (FOSSIL)
- praecursor, Stoliczkaia praecursor Anderson, 1958 † - (LYELLICERATIDAE) (FOSSIL)
- praecursor, Eolytoceras praecursor Guex, 1995 † - (LYTOCERATIDAE) (FOSSIL)
- praecursor, Melanopsis praecursor H. H. Schütt in H. H. Schütt & Ortal, 1993 † - (MELANOPSIDAE) (FOSSIL)
- praecursor, Cornulina praecursor A.E.M. Cossmann, 1902 † - (MELONGENIDAE) (FOSSIL)
- praecursor, Modiomorpha praecursor Frech, 1891 † - (MODIOMORPHIDAE) (FOSSIL)
- praecursor, Gervillia praecursor F.A. von Quenstedt, 1858 † - syn of: Bakevelloides praecursor (F.A. von Quenstedt, 1858 †) - (MYALINIDAE) (FOSSIL)
- praecursor, Mytilus praecursor Renz, 1904 † - syn of: Promysidiella eduliformis (Schlotheim, 1820 †) - (MYTILIDAE) (FOSSIL)
- praecursor, Pseudoplagiothyra praecursor (A.H. Clarke, 1885 †) - (NATICOPSIDAE) (FOSSIL)
- praecursor, Parapecten praecursor Crickmay, 1933 † - syn of: Weyla alata (von Buch, 1838 †) - (NEITHEIDAE) (FOSSIL)
- praecursor, Daudebardia praecursor Andreae, 1902 † - (OXYCHILIDAE) (FOSSIL)
- praecursor, Palaeotrochus praecursor A.H. Clarke, 1885 † - syn of: Pseudoplagiothyra praecursor (A.H. Clarke, 1885 †) - (PALAEOTROCHIDAE) (FOSSIL)
- praecursor, Subdichotomoceras praecursor Énay, Gallois & Etches, 2014 † - (PERISPHINCTIDAE) (FOSSIL)
- praecursor, Villania praecursor D. Geyer, 1886 † - syn of: Paramicroderoceras praecursor (D. Geyer, 1886 †) - (PHRICODOCERATIDAE) (FOSSIL)
- praecursor, Planorbis praecursor A.E.M. Cossmann, 1883 † - (PLANORBIDAE) (FOSSIL)
- praecursor, Naticonema praecursor E.F.R.K. Koken & J. Perner, 1925 † - syn of: Holopea balticus E.F.R.K. Koken & J. Perner, 1925 † - (PLATYCERATIDAE) (FOSSIL)
- praecursor, Omanitopsis praecursor (E. Neubert & D. Van Damme, 2012 †) - (POMATIIDAE) (FOSSIL)
- praecursor, Pomatias praecursor O. Böttger, 1908 - syn of: Pomatias raricosta (T.V. Wollaston, 1878) - (POMATIIDAE)
- praecursor, Cyclotopsis praecursor E. Neubert & D. Van Damme, 2012 † - syn of: Omanitopsis praecursor (E. Neubert & D. Van Damme, 2012 †) - (POMATIIDAE) (FOSSIL)
- praecursor, Paraspidites praecursor (Frech, 1905 †) - (PROPTYCHITIDAE) (FOSSIL)
- praecursor, Pseudomonotis praecursor Mather, 1915 † - (PSEUDOMONOTIDAE) (FOSSIL)
- praecursor, Purpuroidea praecursor Fischer & al., 2002 † - (PURPUROIDEIDAE) (FOSSIL)
- praecursor, Aulacochiton praecursor Smith & al., 1968 † - (SCHIZOCHITONIDAE) (FOSSIL)
- praecursor, Euloxoceras greenei praecursor W.J. Gordon, 1964 † - (SPYROCERATIDAE) (FOSSIL)
- praecursor, Pleuronautilus praecursor (Girty, 1909 †) - (TAINOCERATIDAE) (FOSSIL)
- praecursor, Tornus praecursor (Tate) † - (TORNIDAE) (FOSSIL)
- praecursor, Trachydomia praecursor A.H. Clarke, 1885 † - syn of: Pseudoplagiothyra praecursor (A.H. Clarke, 1885 †) - (TRACHYSPIRIDAE) (FOSSIL)
- praecursor, Pseudopusula praecursor D. Fehse & J. Grego, 2014 † - (TRIVIIDAE) (FOSSIL)
- praecursor, Strepsodiscus praecursor Knight, 1948 † - (TROPIDODISCIDAE) (FOSSIL)
- praecursor, Turritella praecursor A. Andreae, 1887 † - syn of: Gordenella krantzi (Rouillier, 1848 †) - (TURRITELLIDAE) (FOSSIL)
- praecursor, Katelysia praecursor N.H. Ludbrook, 1978 † - (VENERIDAE) (FOSSIL)
- praecursor, Metophiceras praecursor Spath, 1935 † - (XENODISCIDAE) (FOSSIL)
- praecursor rockfordensis, Pseudoplagiothyra praecursor rockfordensis (W.H. Webster, 1906 †) - (NATICOPSIDAE) (FOSSIL)
- praecursor rockfordensis, Palaeotrochus praecursor rockfordensis W.H. Webster, 1906 † - syn of: Pseudoplagiothyra praecursor rockfordensis (W.H. Webster, 1906 †) - (PALAEOTROCHIDAE) (FOSSIL)
- praecursoria, Leucotina praecursoria H.H. Suter, 1917 † - (AMATHINIDAE) (FOSSIL)
- praecursoria, Zemira praecursoria R. Tate, 1889 - syn of: Zemira australis (G.B. I Sowerby, 1833) - (PSEUDOLIVIDAE)
- praecursoris, Gloreugenia praecursoris (C. Hedley, 1912) - (CAMAENIDAE)
- praecursus, Viviparus praecursus (J.R. Tournouër, 1879 †) - (VIVIPARIDAE) (FOSSIL)
- praecurta, Melanella praecurta (P.M. Pallary, 1904) - (EULIMIDAE)
- praecurvata, Vacunella praecurvata Astafieva-Urbajtis, 1990 † - (VACUNELLIDAE) (FOSSIL)
- praecurvum, Ringoceras praecurvum E. Strand, 1934 † - (KIONOCERATIDAE) (FOSSIL)
- praecurvum, Phragmoceras praecurvum Hedstrom, 1917 † - (PHRAGMOCERATIDAE) (FOSSIL)
- Praecuvierina, Genus Praecuvierina Janssen, 2005 † (PRAECUVIERINIDAE) (FOSSIL)
- PRAECUVIERINIDAE Janssen, 2006 † - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-THECOSOMATA [Order]-CAVOLINIOIDEA [Superfamily]) (FOSSIL)
- praeda, Haurakia praeda (C. Hedley, 1908) - (RISSOIDAE)
- Praedalmasiceras, Genus Praedalmasiceras Frau & al., 2016 † (HIMALAYITIDAE) (FOSSIL)
- Praedaraelites, Genus Praedaraelites Kullmann, 1962 † (DARAELITIDAE) (FOSSIL)
- praedatoria, Proneomenia praedatoria L. Salvini-Plawén, 1978 - (PRONEOMENIIDAE)
- praedicta, Strophiops praedicta C.J. Maynard & W.F. Clapp, 1915 - (CERIONIDAE)
- praediezi, Acicula praediezi Kadolsky, 2008 † - (ACICULIDAE) (FOSSIL)
- praediscus, Neocomites praediscus Reboulet, 1996 † - (NEOCOMITIDAE) (FOSSIL)
- praedisposita, Massylaea praedisposita (A. Mousson, 1874) - (HELICIDAE)
- praedivaricata, Acila praedivaricata T. Nagao & Huzioka, 1941 † - (NUCULIDAE) (FOSSIL)
- praedivina, Strophiops praedivina C.J. Maynard, 1913 - (CERIONIDAE)
- praedivinauniversa, Strophiops praedivinauniversa C.J. Maynard, 1913 - syn of: Strophiops universa C.J. Maynard, 1913 - (CERIONIDAE)
- praedo, Liospira praedo Lamont † - (EOTOMARIIDAE) (FOSSIL)
- praeduabicus, Viviparus praeduabicus Gozhik, 2002 † - (VIVIPARIDAE) (FOSSIL)
- praedufrenoyi, Dufrenoyia praedufrenoyi Casey † - (DESHAYESITIDAE) (FOSSIL)
- praeelatior, Psammobia praeelatior Holzl 1962 † - (PSAMMOBIIDAE) (FOSSIL)
- praeeminens, Euplecta praeeminens E.R. Sykes, 1898 - syn of: Euplecta turritella (C.B. Adams, 1869) - (ARIOPHANTIDAE)
- praeescoffierae, Saccoia praeescoffierae (J. Almera, 1894 †) - (HYDROBIIDAE) (FOSSIL)
- praeespagnicus, Vaccinites praeespagnicus Pamouktchiev, 1979 † - syn of: Vaccinites archiaci E.C. Munier-Chalmas, 1892 † - (HIPPURITIDAE) (FOSSIL)
- Praeexogyra, Genus Praeexogyra Charles, 1952 † (FLEMINGOSTREIDAE) (FOSSIL)
- praefecta, Moerkeia praefecta (E.A.L. Kittl, 1894 †) - (PROTORCULIDAE) (FOSSIL)
- praefectus, Rhynchotrochus praefectus T. Iredale, 1941 - (CAMAENIDAE)
- praefectus, Conus praefectus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Graphiconus ochroleucus (J.F. Gmelin, 1791) - (CONIDAE)
- praefemorale, Cymatium praefemorale C.J. Maury, 1917 † - (RANELLIDAE) (FOSSIL)
- Praeflexiclymenia, Genus Praeflexiclymenia Czarnocki, 1989 † (CYRTOCLYMENIIDAE) (FOSSIL)
- praefloralia, Olivella praefloralia A.A. Olsson & A. Harbison, 1953 † - syn of: Olivella prefloralia A.A. Olsson & A. Harbison, 1953 † - (OLIVELLIDAE) (FOSSIL)
- praefloridum, Pinacoceras praefloridum Mojsisovics 1873 † - (PINACOCERATIDAE) (FOSSIL)
- praefloridus, Hyattites praefloridus (Mojsisovics, 1873 †) - (HALORITIDAE) (FOSSIL)
- praefluctuosa, Liocyma praefluctuosa Krishtofovich, 1968 † - syn of: Liocyma fluctuosa (A.A. Gould, 1841) - (VENERIDAE) (FOSSIL)
- praefulguratum, Vexillum praefulguratum G.T. Poppe, 2008 - (COSTELLARIIDAE)
- praefurlongi, Saccella praefurlongi L. Krishtofovich, 1964 † - (NUCULANIDAE) (FOSSIL)
- praegalloprovincialis, Radiolites praegalloprovincialis Toucas, 1908 † - (RADIOLITIDAE) (FOSSIL)
- praegibberulus, Gibberulus praegibberulus (R. Abrard, 1947 †) - (STROMBIDAE) (FOSSIL)
- praeglobosum, Cheiloceras praeglobosum Sobolew, 1914 † - syn of: Cheiloceras sacculum (C.L.F. von Sandberger, 1851 †) - (CHEILOCERATIDAE) (FOSSIL)
- praeglobulina, Bania praeglobulina (Kókay, 2006 †) - (HYDROBIIDAE) (FOSSIL)
- Praeglyphioceras, Genus Praeglyphioceras Wedekind , 1908 † (PRAEGLYPHIOCERATIDAE) (FOSSIL)
- PRAEGLYPHIOCERATIDAE Ruzhencev, 1957 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-PRIONOCERATOIDEA [Superfamily]) (FOSSIL)
- praegnans, Pruvotina praegnans L. Salvini-Plawén, 1978 - (PRUVOTINIDAE)
- Praegonia, Genus Praegonia Fleming, 1962 † (PROSOGYROTRIGONIIDAE) (FOSSIL)
- praegrande, Tylostoma praegrande F.A. Roemer, 1849 † - syn of: Euspira praegrandis F.A. Roemer, 1849 † - (TYLOSTOMATIDAE) (FOSSIL)
- praegrandis, Euspira praegrandis F.A. Roemer, 1849 † - (NATICIDAE) (FOSSIL)
- praegravata, Turbonilla praegravata C.R. Laws, 1940 † - (PYRAMIDELLIDAE) (FOSSIL)
- Praegravesia, Genus Praegravesia Zeiss , 1987 † (AULACOSTEPHANIDAE) (FOSSIL)
- praegressus, Murexsul praegressus Finlay, 1930 † - (MURICIDAE) (FOSSIL)
- praegryphoides, Chama praegryphoides A.E.M. Cossmann & M.A. Peyrot, 1911 † - (CHAMIDAE) (FOSSIL)
- praehadra, Spurlingia praehadra (N.H. Odhner, 1917) - (CAMAENIDAE)
- Praehaploceras, syn of: Genus Pseudolioceras Young & Bird, 1822 † (HILDOCERATIDAE) (FOSSIL)
- praehellesponticus, Pseudocatillus praehellesponticus Ebersin, 1967 † - (CARDIIDAE) (FOSSIL)
- praehinemoa, Orbitestella praehinemoa C.R. Laws, 1939 † - (ORBITESTELLIDAE) (FOSSIL)
- praehispida, Philbertia praehispida (Boettger, 1906 †) - (RAPHITOMIDAE) (FOSSIL)
- praeholsatica, Alvania praeholsatica Gürs & Weinbrecht, 2001 † - (RISSOIDAE) (FOSSIL)
- Praehyalocylis, Genus Praehyalocylis Korobkov, 1962 † (CAVOLINIIDAE) (FOSSIL)
- praeincertum, Reynesocoeloceras praeincertum Dommergues & Mouterde, 1982 † - (DACTYLIOCERATIDAE) (FOSSIL)
- praeinflatus, Nassarius praeinflatus (A.L. Chavan, 1940 †) - (NASSARIIDAE) (FOSSIL)
- praeinsularis, Cerastua praeinsularis E. Neubert & D. Van Damme, 2012 † - (CERASTUIDAE) (FOSSIL)
- praekieperti, Palaeophyllites praekieperti Renz & Renz, 1948 † - syn of: Palaeophyllites steinmanni Welter, 1922 † - (USSURITIDAE) (FOSSIL)
- praekieperti, Palaeophyllites praekieperti Renz & Renz, 1948 † - syn of: Palaeophyllites steinmanni Welter, 1922 † - (USSURITIDAE) (FOSSIL)
- Praekolymia, Genus Praekolymia Biakov, 2008 † (KOLYMIIDAE) (FOSSIL)
- praelaevigata, Sconsia praelaevigata Gardner, 1947 † - (CASSIDAE) (FOSSIL)
- praelaevigata, Turbinella praelaevigata E.H. Vokes, 1964 † - (TURBINELLIDAE) (FOSSIL)
- praelagowiensis, Nehdenites praelagowiensis (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- praelamberti, Quenstedtoceras praelamberti (J.H.F. Douvillé, 1912 †) - (CARDIOCERATIDAE) (FOSSIL)
- praelamberti ordinarium, Quenstedtoceras praelamberti ordinarium (J. Leckenby, 1859 †) - (CARDIOCERATIDAE) (FOSSIL)
- praelamberti sutherlandiae, Quenstedtoceras praelamberti sutherlandiae (J. de C. Sowerby, 1827 †) - (CARDIOCERATIDAE) (FOSSIL)
- Praelamellodonta, Genus Praelamellodonta Zhang , 1980 † (STENOTHECOIDA INCERTAE SEDIS) (FOSSIL)
- Praelapeirousia, Genus Praelapeirousia Wiontzek, 1934 † (RADIOLITIDAE) (FOSSIL)
- praelatior, Zonaria praelatior L. Dolin, 1991 † - (CYPRAEIDAE) (FOSSIL)
- praelatus, Conus praelatus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Darioconus pennaceus (I. von Born, 1778) - (CONIDAE)
- praelavigata, Turbinella praelavigata E.H. Vokes, 1964 † - (TURBINELLIDAE) (FOSSIL)
- Praeleda, syn of: Genus Deceptrix Fuchs, 1919 † (CARDIOLARIIDAE) (FOSSIL)
- praelentiformis, Nehdenites praelentiformis (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- Praeleptosphinctes, Genus Praeleptosphinctes Westermann , 1956 † (PERISPHINCTIDAE) (FOSSIL)
- Praelima, Genus Praelima Barrande, 1881 † (PRAECARDIIDAE) (FOSSIL)
- praelinguis, Turcutheca praelinguis L.Y. Jiang, 1980 † - (CIRCOTHECIDAE) (FOSSIL)
- Praelittorina, Genus Praelittorina Kutassy, 1937 † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- praelonga, Alaria praelonga W.H. Hudleston, 1888 † - (APORRHAIDAE) (FOSSIL)
- praelonga, Seila praelonga G.P. Deshayes, 1864 † - (CERITHIOPSIDAE) (FOSSIL)
- praelonga, Acirsa praelonga J.G. Jeffreys, 1877 - syn of: Papuliscala praelonga (J.G. Jeffreys, 1877) - (EPITONIIDAE)
- praelonga, Myadora praelonga R. Tate, 1887 † - (MYOCHAMIDAE) (FOSSIL)
- praelonga, Nassa praelonga T.A. de M. Monterosato, 1891 - syn of: Nassarius lima (L.W. Dillwyn, 1817) - (NASSARIIDAE)
- praelonga, Natica praelonga G.P. Deshayes, 1853 † - syn of: Tylostoma regina Cragin, 1893 † - (NATICIDAE) (FOSSIL)
- praelonga, Ledella praelonga (R. Tate, 1886) - (NUCULANIDAE)
- praelonga, Papuliscala praelonga (J.G. Jeffreys, 1877) - (NYSTIELLIDAE)
- praelonga, Evalea praelonga A.E.M. Cossmann, 1888 † - (PYRAMIDELLIDAE) (FOSSIL)
- praelonga, Eulimella praelonga J.G. Jeffreys, 1884 - syn of: Eulimella cerullii (A.E.M. Cossmann, 1916) - (PYRAMIDELLIDAE)
- praelonga, Terebra praelonga G.P. Deshayes, 1859 - syn of: Triplostephanus triseriatus (J.E. Gray, 1834) - (TEREBRIDAE)
- praelonga, Janaija praelonga (Kiparisova, 1937 †) - (TRIGONODIDAE) (FOSSIL)
- praelonga, Turritella praelonga Hislop, 1859 † - (TURRITELLIDAE) (FOSSIL)
- praelonga concinna, Odostomia praelonga concinna J.G. Jeffreys, 1884 - syn of: Eulimella cerullii (A.E.M. Cossmann, 1916) - (PYRAMIDELLIDAE)
- praelongata, Dupotetia praelongata (P.M. Pallary, 1897) - (HELICIDAE)
- praelongata, Radix socialis praelongata (F. Gottschick & W.A. Wenz, 1916 †) - (LYMNAEIDAE) (FOSSIL)
- praelongata, Philinoglossa praelongata L. Salvini-Plawén, 1973 - (PHILINOGLOSSIDAE)
- praelongatus, Mirus praelongatus (C.M.F. Ancey, 1882) - (ENIDAE)
- praelongissima, Yoldia praelongissima L. Krishtofovich, 1984 † - syn of: Yoldia longissima Slodkewitsch, 1936 † - (YOLDIIDAE) (FOSSIL)
- praelongus, Chelyconus praelongus Hoernes & Auinger, 1879 † - (CONIDAE) (FOSSIL)
- praelongus, Unio praelongus D.W. Barnes, 1823 - syn of: Ligumia recta (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- Praelucina, Genus Praelucina Barrande, 1881 † (PRAELUCINIDAE) (FOSSIL)
- PRAELUCINIDAE Conrath, 1887 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-CYRTODONTIDA [Order]-DUALINOIDEA [Superfamily]) (FOSSIL)
- praelunense, Liroceras praelunense Shimanskiy, 1967 † - (LIROCERATIDAE) (FOSSIL)
- praemagna, Orobophana stokesii praemagna M.C. Neal, 1934 - (HELICINIDAE)
- Praemanambolites, Genus Praemanambolites † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- praemartini, Cardioceras praemartini Spath, 1939 † - (CARDIOCERATIDAE) (FOSSIL)
- praematura, Granaria praematura J. Favre, 1927 - syn of: Granaria variabilis (J.P.R. Draparnaud, 1801) - (CHONDRINIDAE)
- praematura, Spiomenia praematura C. Todt & L. Salvini-Plawén, 2003 - (SIMROTHIELLIDAE)
- Praematuratropis, Genus Praematuratropis Rollins & al., 1971 † (BELLEROPHONTIDAE) (FOSSIL)
- praematuratus, Nassarius praematuratus (J.T. Kuroda & T. Habe, 1960) - (NASSARIIDAE)
- praematuratus, Cryptonassarius praematuratus A. Adams, 1852 - syn of: Nassarius praematuratus (J.T. Kuroda & T. Habe, 1960) - (NASSARIIDAE)
- praematurum, Celaeceras praematurum (Barrande, 1877 †) - (AUGURITIDAE) (FOSSIL)
- praematurum, Isohomoceras praematurum (Haug, 1898 †) - (HOMOCERATIDAE) (FOSSIL)
- praematurum, Maelonoceras praematurum (Billings, 1860 †) - (ONCOCERATIDAE) (FOSSIL)
- praematurum, Parapopanoceras praematurum McLearn, 1946 † - syn of: Amphipopanoceras tetsa (McLearn, 1946 †) - (PARAPOPANOCERATIDAE) (FOSSIL)
- praematurum, Phragmoceras praematurum Billings, 1860 † - syn of: Maelonoceras praematurum (Billings, 1860 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- praematurus, Beyrichites praematurus Renz & Renz, 1948 † - syn of: Beyrichites laurae Renz & Renz, 1948 † - (BEYRICHITIDAE) (FOSSIL)
- praematurus, Hellenites praematurus (Arthaber, 1911 †) - (COLUMBITIDAE) (FOSSIL)
- praematurus, Goniatites praematurus Barrande, 1877 † - syn of: Celaeceras praematurum (Barrande, 1877 †) - (GONIATITIDAE) (FOSSIL)
- praematurus, Prodromites praematurus Smith & Weller, 1901 † - (PRODROMITIDAE) (FOSSIL)
- praemelongena, Melongena praemelongena E.W. Vredenburg, 1923 † - (MELONGENIDAE) (FOSSIL)
- praemeridionalis, Pseudomalaxis praemeridionalis A.C. Chapman, 1912 † - (ARCHITECTONICIDAE) (FOSSIL)
- Praemeroceras, Genus Praemeroceras Becker , 1993 † (CHEILOCERATIDAE) (FOSSIL)
- praeminenta, Venericardia imbricata praeminenta Slodkevitch † - (CARDITIDAE) (FOSSIL)
- praemissa, Nucula praemissa C.G. Semper, 1861 † - syn of: Lamellinucula comta (G.A. Goldfuss, 1837 †) - (NUCULIDAE) (FOSSIL)
- praemitis, Macoma praemitis A. Römer, 1872 - (TELLINIDAE)
- praemium, Ambuscintilla praemium T. Iredale, 1936 - (GALEOMMATIDAE)
- praemorsa, Melanopsis praemorsa (C. Linnaeus, 1758) - (MELANOPSIDAE)
- praemorsa, Melanopsis praemorsa S. Cerulli-Irelli, 1914 - syn of: Melanopsis orophila P.M. Pallary, 1920 - (MELANOPSIDAE)
- praemorsa acuticarinata, Melanopsis praemorsa acuticarinata F. Paetel, 1888 - (MELANOPSIDAE)
- praemorsa astropaliae, Melanopsis praemorsa astropaliae L. Gambetta, 1929 - (MELANOPSIDAE)
- praemorsa bicolorata, Melanopsis praemorsa bicolorata F. Paetel, 1888 - (MELANOPSIDAE)
- praemorsa carinifera, Melanopsis praemorsa carinifera F. Paetel, 1888 - (MELANOPSIDAE)
- praemorsa ferussaci, Melanopsis praemorsa ferussaci J.R. Roth, 1839 - (MELANOPSIDAE)
- praemorsa fusulatina, Melanopsis praemorsa fusulatina F. Sacco, 1895 † - syn of: Melanopsis fusulatina F. Sacco, 1895 † - (MELANOPSIDAE) (FOSSIL)
- praemorsa jordanica, Melanopsis praemorsa jordanica J.R. Roth, 1839 - syn of: Melanopsis jordanica J.R. Roth, 1839 - (MELANOPSIDAE)
- praemorsa longopyrulata, Melanopsis praemorsa longopyrulata F. Sacco, 1895 † - syn of: Melanopsis fusulatina F. Sacco, 1895 † - (MELANOPSIDAE) (FOSSIL)
- praemorsa maximalis, Melanopsis praemorsa maximalis H. Schütt, 1974 - (MELANOPSIDAE)
- praemorsa obesa, Melanopsis praemorsa obesa J. Gassies, 1856 - (MELANOPSIDAE)
- praemorsa pseudofallax, Melanopsis praemorsa pseudofallax F. Sacco, 1895 † - syn of: Melanopsis fusulatina F. Sacco, 1895 † - (MELANOPSIDAE) (FOSSIL)
- praemorsa subcylindrica, Melanopsis praemorsa subcylindrica L.J.J.M. Pérès, 1939 - (MELANOPSIDAE)
- praemorsa subpraemorsa, Melanopsis praemorsa subpraemorsa V.V. Bogachev, 1908 † - (MELANOPSIDAE) (FOSSIL)
- praemorsa turbinata, Melanopsis praemorsa turbinata L.J.J.M. Pérès, 1939 - (MELANOPSIDAE)
- praemorsa zonulata, Melanopsis praemorsa zonulata F. Paetel, 1888 - (MELANOPSIDAE)
- Praemuniericeras, Genus Praemuniericeras Collignon, 1966 † (MUNIERICERATIDAE) (FOSSIL)
- Praemyonia, Genus Praemyonia Astafieva-Urbajtis, 1988 † (PHOLADOMYOIDEA (UNASSIGNED)) (FOSSIL)
- Praemytilus, Genus Praemytilus Anderson & Cox, 1948 † (MYTILIDA (UNASSIGNED)) (FOSSIL)
- Praenatica, Genus Praenatica Perner, 1903 † (PLATYCERATIDAE) (FOSSIL)
- praeneocomiensis, Neocomites praeneocomiensis (Burckhardt †) - (NEOCOMITIDAE) (FOSSIL)
- praeniger, Musculus praeniger V.N. Sinelnikova, 1990 † - (MYTILIDAE) (FOSSIL)
- praenipponica, Ennucula praenipponica (Kamada, 1962 †) - (NUCULIDAE) (FOSSIL)
- praenodulifera, Gonioviriatellina praenodulifera Alberti, 1997 † - (GONIONOWAKIIDAE) (FOSSIL)
- praenominata, Barbatia praenominata A.E.M. Cossmann & M.A. Peyrot, 1912 - (ARCIDAE)
- praenominata, Lamprodomina praenominata (A.E.M. Cossmann, 1912 †) - (OLIVELLIDAE) (FOSSIL)
- praenominata, Lamprodomina praenominata R. Tate, 1889 † - syn of: Lamprodomina praenominata (A.E.M. Cossmann, 1912 †) - (OLIVELLIDAE) (FOSSIL)
- praenominata, Phenacovolva praenominata T. Iredale, 1935 - syn of: Hiatavolva depressa (G.B. III Sowerby, 1875) - (OVULIDAE)
- praenominata, Hiatavolva praenominata T. Iredale, 1935 - syn of: Hiatavolva depressa (G.B. III Sowerby, 1875) - (OVULIDAE)
- praenominatus, Pitar praenominatus (G.D. Hanna †) - (VENERIDAE) (FOSSIL)
- praenotata, Semisulcospira praenotata (P.V. Gredler, 1884) - (SEMISULCOSPIRIDAE)
- praenotata schmackeri, Semisulcospira praenotata schmackeri (O. Böttger, 1886) - (SEMISULCOSPIRIDAE)
- Praenucula, Genus Praenucula Pfab, 1934 † (PRAENUCULIDAE) (FOSSIL)
- PRAENUCULIDAE McAlester, 1969 † - Family (BIVALVIA-PROTOBRANCHIA [Subclass]-NUCULIDA [Order]-NUCULOIDEA [Superfamily]) (FOSSIL)
- praenuncius, Chlamys praenuncius H.F.A. von Ihering, 1897 † - (PECTINIDAE) (FOSSIL)
- praenuntia, Struthiolaria praenuntia J. Marwick, 1926 † - (STRUTHIOLARIIDAE) (FOSSIL)
- praenuntians, Pacitrigonia praenuntians Kelly 1995 † - (TRIGONIIDAE) (FOSSIL)
- praenuntium, Treptoceras praenuntium Flower, 1942 † - syn of: Isorthoceras rogersensis (Foerste, 1914 †) - (PROTEOCERATIDAE) (FOSSIL)
- praenuntium, Rudolfoceras praenuntium Flower, 1964 † - (RUDOLFOCERATIDAE) (FOSSIL)
- praenuntius, Praestrigites praenuntius S.S. Buckman, 1924 † - (STRIGOCERATIDAE) (FOSSIL)
- praeobscurus, Scaphellina praeobscurus Guskov, 1984 † - (SCAPHELLINIDAE) (FOSSIL)
- praeobtusa, Arcopagia praeobtusa (Finlay & J. Marwick, 1937 †) - (TELLINIDAE) (FOSSIL)
- Praeoestophorella, Genus Praeoestophorella Pfeffer, 1930 † (TRISSEXODONTIDAE) (FOSSIL)
- Praeoestophorella, syn of: Genus Caracollina H.H. Beck, 1837 (TRISSEXODONTIDAE)
- praeopima, Amastra praeopima C.M. Cooke, 1917 - (AMASTRIDAE)
- Praeoppelia, Subgenus Bradfordia (Praeoppelia) Westermann, 1969 † (OPPELIIDAE) (FOSSIL)
- praeorbicularis, Neoschizodus praeorbicularis Bittner, 1901 † - (MYOPHORIIDAE) (FOSSIL)
- praeorbiculata, Macoma praeorbiculata V.N. Sinelnikova, 1987 † - syn of: Macoma golikovi O.A. Scarlato & A.I. Kafanov, 1988 - (TELLINIDAE) (FOSSIL)
- Praeorbitestella, Genus Praeorbitestella Gründel, 1998 † (ORBITESTELLIDAE) (FOSSIL)
- praeosculina, Klikia praeosculina (Miller, 1907) † - (HELICIDAE) (FOSSIL)
- Praeostrea, Genus Praeostrea Barrande, 1881 † (VLASTIDAE) (FOSSIL)
- Praeotapiria, Genus Praeotapiria Kurushin, 1985 † (MONOTIDAE) (FOSSIL)
- praeovoidea, Turbinella praeovoidea E.W. Vredenburg, 1916 † - syn of: Turbinella premekranica E.W. Vredenburg, 1925 † - (TURBINELLIDAE) (FOSSIL)
- praeovoideus, Turbinella praeovoideus C.J. Maury, 1917 † - syn of: Turbinella trinitatis C.J. Maury, 1925 † - (TURBINELLIDAE) (FOSSIL)
- Praeoxyteuthis, Genus Praeoxyteuthis Mutterlose, 1980 † (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- praepalustris, Galba praepalustris (F. Roman, 1907 †) - (LYMNAEIDAE) (FOSSIL)
- praepapillosum, Cardium praepapillosum Baldi † - (CARDIIDAE) (FOSSIL)
- praeparadisiaca, Pugilina praeparadisiaca E.W. Vredenburg, 1923 † - (MELONGENIDAE) (FOSSIL)
- praeparca, Venus praeparca T. Say, 1822 - syn of: Mercenaria mercenaria (C. Linnaeus, 1758) - (VENERIDAE)
- Praeparkinsonia, Genus Praeparkinsonia Schmidtill & Krumbeck, 1931 † (PARKINSONIIDAE) (FOSSIL)
- praeparva, Pleuropoma laciniosa praeparva M.C. Neal, 1934 - (HELICINIDAE)
- Praeparvamarginella, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- praepauxillus, Phyllonotus praepauxillus C.J. Maury, 1917 † - (MURICIDAE) (FOSSIL)
- praepedroanus, Delectopecten praepedroanus Krishtofovich, 1984 † - syn of: Pseudamussium peckhami W.M. Gabb, 1906 † - (PECTINIDAE) (FOSSIL)
- praepermicus, Arceodomus praepermicus (Fredericks, 1915 †) - (CONOCARDIIDAE) (FOSSIL)
- praepermicus, Conocardium praepermicus Fredericks, 1915 † - syn of: Arceodomus praepermicus (Fredericks, 1915 †) - (CONOCARDIIDAE) (FOSSIL)
- praepermicus, Neopronorites praepermicus (Karpinsky, 1874 †) - (PRONORITIDAE) (FOSSIL)
- Praephiline, syn of: Genus Laona A. Adams, 1865 (LAONIDAE)
- praepica, Cittarium praepica B.M. Landau, G.C. Kronenberg & F. Da Silva, 2015 † - (TEGULIDAE) (FOSSIL)
- praepilatus, Potamides praepilatus Klushnikov, 1958 † - (POTAMIDIDAE) (FOSSIL)
- praepiscinalis, Valvata praepiscinalis (Gozhik in Gozhik & Datsenko, 2007 †) - (VALVATIDAE) (FOSSIL)
- praepolonicus, Cheiloceras praepolonicus Sobolew, 1914 † - syn of: Nehdenites glabrus (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- Praepolyplectus, syn of: Genus Polyplectus Zittel, 1831 † (HILDOCERATIDAE) (FOSSIL)
- praepompilius, Nautilus praepompilius Shimansky, 1957 - (NAUTILIDAE)
- praeponderosa, Pugilina praeponderosa E.W. Vredenburg, 1921 † - (MELONGENIDAE) (FOSSIL)
- praeponticus, Gyraulus praeponticus (Gorjanovic-Kramberger, 1890) - (PLANORBIDAE)
- praeponticus, Fossarulus praeponticus Miloševic, 1972 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- Praeportlandia, Genus Praeportlandia Savitskii, 1969 † (NUCULANIDAE) (FOSSIL)
- praeposita, Monilearia praeposita (A. Mousson, 1872) - (COCHLICELLIDAE)
- praepositum, Dactylioceras praepositum Buckman, 1927 † - (DACTYLIOCERATIDAE) (FOSSIL)
- praeposneri, Yoldia praeposneri L. Krishtofovich, 1984 † - (YOLDIIDAE) (FOSSIL)
- praepostera, Kotysium praepostera (J. Perner, 1903 †) - (TRYBLIDIIDAE) (FOSSIL)
- praeposterus, Unio pictorum praeposterus H.C. Küster, 1854 - (UNIONIDAE)
- praepristis, Pojetaconcha praepristis (Reed, 1952 †) - (BRANSONIIDAE) (FOSSIL)
- praepristis, Conocardium praepristis Reed, 1952 † - (CONOCARDIIDAE) (FOSSIL)
- praepristis, Hippocardia praepristis Reed, 1952 † - syn of: Pojetaconcha praepristis (Reed, 1952 †) - (HIPPOCARDIIDAE) (FOSSIL)
- praeprocera, Colubraria praeprocera B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (COLUBRARIIDAE) (FOSSIL)
- praepusilla, Sphenia praepusilla M. Harzhauser, O. Mandic & al., 2016 † - (MYIDAE) (FOSSIL)
- praeputium, Cymbium praeputium P.F. Röding, 1798 - syn of: Cymbium pepo (J. Lightfoot, 1786) - (VOLUTIDAE)
- praeradiata, Nuculana praeradiata Boettger, 1883 † - (NUCULANIDAE) (FOSSIL)
- Praeradiolites, Genus Praeradiolites Douvillé, 1902 † (RADIOLITIDAE) (FOSSIL)
- praerangi, Limacina praerangi M.L Tembrock, 1989 † - syn of: Limacina valvatina A.E. Reuss, 1867 † - (LIMACINIDAE) (FOSSIL)
- Praerangia, Genus Praerangia Cossmann, 1908 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- praeraninus, Lobatus praeraninus G.C. Kronenberg & H. Dekker, 2000 - syn of: Lobatus raninus (J.F. Gmelin, 1791) - (STROMBIDAE)
- praerobai, Poroleda praerobai (L. Krishtofovich, 1964 †) - (NUCULANIDAE) (FOSSIL)
- praerosa, Melanopsis praerosa C. Linnaeus, 1758 - syn of: Melanopsis praemorsa (C. Linnaeus, 1758) - (MELANOPSIDAE)
- praerosa, Murex praerosa C. Linnaeus, 1758 - syn of: Melanopsis praemorsa (C. Linnaeus, 1758) - (MURICIDAE)
- praerosa, Leptoxis praerosa T. Say, 1821 - (PLEUROCERIDAE)
- praerosa, Amuropaludina praerosa (G. Gerstfeldt, 1859) - (VIVIPARIDAE)
- Praerosaria, Genus Praerosaria Dolin & Lozouet, 2004 † (CYPRAEIDAE) (FOSSIL)
- praerudis, Arca praerudis Dufour, 1881 † - (ARCIDAE) (FOSSIL)
- praerupta, Crepidula praerupta T.A. Conrad, 1849 † - (CALYPTRAEIDAE) (FOSSIL)
- praerupta, Worthenia praerupta Böhm, 1895 † - (LOPHOSPIRIDAE) (FOSSIL)
- praerupta, Modiolus praerupta G.B. Pritchard, 1901 † - (MYTILIDAE) (FOSSIL)
- praerupta, Cerithiella praerupta A. Cecalupo & I. Perugia, 2017 - (NEWTONIELLIDAE)
- praerupta, Psammotreta praerupta (A.E. Salisbury, 1934) - (TELLINIDAE)
- praeruptensis, Cyclocardia praeruptensis (Slodkewitsch, 1938 †) - (CARDITIDAE) (FOSSIL)
- praerustica, Arctica praerustica Hassan, 1953 † - (ARCTICIDAE) (FOSSIL)
- Praerycites, syn of: Genus Phymatoceras Buckman, 1898 † (PHYMATOCERATIDAE) (FOSSIL)
- Praesaccella, Subgenus Nuculana (Praesaccella) Cox, 1940 † (NUCULANIDAE) (FOSSIL)
- Praesacella, Genus Praesacella † (NUCULIDA (UNASSIGNED)) (FOSSIL)
- praesagus, Ramosites praesagus Ruzhencev & Bogoslovskaya, 1978 † - (RAMOSITIDAE) (FOSSIL)
- praescabroidea, Promyophorella praescabroidea (Jaworski 1916) † - (MYOPHORELLIDAE) (FOSSIL)
- Praescabrotrigonia, Genus Praescabrotrigonia M.R. Cooper, 2015 † (PTEROTRIGONIIDAE) (FOSSIL)
- Praescissurella, Genus Praescissurella Lozouet, 1998 † (SCISSURELLIDAE) (FOSSIL)
- Praescissurella, syn of: Genus Scissurella D'Orbigny, 1824 (SCISSURELLIDAE)
- Praesibirites, Genus Praesibirites Dagis & Ermakova, 1988 † (SIBIRITIDAE) (FOSSIL)
- praesidii, Humboldtiana hoegiana praesidii H.A. Pilsbry, 1939 - (HUMBOLDTIANIDAE)
- praesieversi, Caspicyclotus praesieversi Steklov, 1966 - syn of: Caspicyclotus sieversi (L. Pfeiffer, 1871) - (CYCLOPHORIDAE)
- praesignis, Amussiopecten praesignis Yokoyama, 1922 † - (PECTINIDAE) (FOSSIL)
- praesignis, Gemmula praesignis (E.A. Smith, 1895) - (TURRIDAE)
- praesimplicior, Perrinites praesimplicior Leonova, 1992 † - (PERRINITIDAE) (FOSSIL)
- praesingulare, Freboldiceras praesingulare Birkelund & Hakansson, 1983 † - (HOPLITIDAE) (FOSSIL)
- praeslavonica, Prososthenia praeslavonica O. Mandic, Kurecic, T.A. Neubauer & M. Harzhauser † - (HYDROBIIDAE) (FOSSIL)
- praesolida, Murella muralis praesolida (T.A. de M. Monterosato, 1892) - (HELICIDAE)
- Praesondylopecten, syn of: Genus Praespondylopecten Romanov, 1987 † (PECTINIDAE) (FOSSIL)
- Praesondylopecten, syn of: Genus Praespondylopecten Romanov, 1987 † (PECTINIDAE) (FOSSIL)
- Praesphaeroceras, Genus Praesphaeroceras Levi, 1896 † (COELOCERATIDAE) (FOSSIL)
- praespiniger, Trachyscaphites praespiniger Cobban & P.H. Scott, 1964 † - (SCAPHITIDAE) (FOSSIL)
- praespiratissimum, Gyrophioceras praespiratissimum (Wahner, 1887 †) - (ARIETITIDAE) (FOSSIL)
- Praespondylopecten, Genus Praespondylopecten Romanov, 1987 † (PECTINIDAE) (FOSSIL)
- praesqualida, Littorina praesqualida V.N. Sinelnikova in Y.B. Gladenkov & V.N. Sinelnikova, 1990 - syn of: Littorina squalida W.J. Broderip & G.B. I Sowerby, 1829 - (LITTORINIDAE)
- praesquamula, Propeamussium praesquamula M. Glibert & Poel, 1965 † - (PROPEAMUSSIIDAE) (FOSSIL)
- praestabilis, Leptachatina praestabilis C.M. Cooke, 1910 - (AMASTRIDAE)
- praestans, Megaustenia praestans (A.A. Gould, 1843) - (ARIOPHANTIDAE)
- praestans, Megaustenia praestans A.A. Gould, 1843 - syn of: Megaustenia praestans (A.A. Gould, 1843) - (ARIOPHANTIDAE)
- praestans, Isabellaria praestans (C.A. Westerlund, 1893) - (CLAUSILIIDAE)
- praestans, Philoxene praestans (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- praestans, Holopea praestans J. Perner, 1903 † - syn of: Philoxene praestans (J. Perner, 1903 †) - (HOLOPEIDAE) (FOSSIL)
- praestans, Solaropsis praestans (L. Pfeiffer, 1853) - (PLEURODONTIDAE)
- praestans, Psammobia praestans G.P. Deshayes, 1855 - syn of: Gari maculosa J.B.P.A. Lamarck, 1818 - (PSAMMOBIIDAE)
- praestans, Xylophaga praestans E.A. Smith, 1903 - (XYLOPHAGAIDAE)
- praestantior, Pustulatirus praestantior (J.C. Melvill, 1891) - (FASCIOLARIIDAE)
- praestantissima, Domiporta praestantissima (P.F. Röding, 1798) - (MITRIDAE)
- praestantissima, Mitra praestantissima P.F. Röding, 1798 - syn of: Domiporta praestantissima (P.F. Röding, 1798) - (MITRIDAE)
- praestitus, Acteon praestitus H.J. Finlay, 1924 - syn of: Leucotina casta (A. Adams, 1853) - (ACTEONIDAE)
- Praestomatia, Genus Praestomatia L.R. Cox, 1960 (TROCHIDAE)
- Praestrigites, Genus Praestrigites Buckman, 1924 † (STRIGOCERATIDAE) (FOSSIL)
- praesublineatum, Lytoceras praesublineatum (Fucini, 1899 †) - (LYTOCERATIDAE) (FOSSIL)
- Praesurcula, Genus Praesurcula Garvie, 2013 † (TURRIDAE) (FOSSIL)
- praetenera, Aphelodoris praetenera F.D. Abraham, 1877 - syn of: Aphelodoris varia (F.D. Abraham, 1877) - (DORIDIDAE)
- praetenta, Nucula praetenta T. Iredale, 1924 - (NUCULIDAE)
- praetenue, Brachytrema praetenue W.H. Hudleston, 1896 † - (BRACHYTREMATIDAE) (FOSSIL)
- praetenue, Cochlodesma praetenue (R. Pulteney, 1799) - (PERIPLOMATIDAE)
- praetenuis, Acusta despecta praetenuis H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- praetenuis, Cadulus praetenuis L.W. Stephenson, 1952 † - (GADILIDAE) (FOSSIL)
- praetenuis, Lyonsia praetenuis R.W. Dunker, 1882 - (LYONSIIDAE)
- praetenuis, Spisula praetenuis (T.A. Conrad, 1833 †) - (MACTRIDAE) (FOSSIL)
- praetenuis, Mya praetenuis R. Pulteney, 1799 - syn of: Cochlodesma praetenue (R. Pulteney, 1799) - (MYIDAE)
- praetenuis, Sigaretus praetenuis A.A. Gould, 1852 - syn of: Lamellaria perspicua (C. Linnaeus, 1758) - (NATICIDAE)
- praetenuis, Streblochondria praetenuis (A. von Koenen, 1879 †) - (STREBLOCHONDRIIDAE) (FOSSIL)
- praetenuis, Macoma praetenuis Leathes in Woodward, 1830 † - (TELLINIDAE) (FOSSIL)
- praetenuis, Thracia praetenuis R. Pulteney, 1799 - syn of: Cochlodesma praetenue (R. Pulteney, 1799) - (THRACIIDAE)
- praetenuis, Lamellaria praetenuis (J.P.Y. Couthouy, 1852) - (VELUTINIDAE)
- praeterea, Protoginella praeterea C.F. Laseron, 1957 - (MARGINELLIDAE)
- praeterebralis, Costoanachis praeterebralis P. Lozouet, 2015 - (COLUMBELLIDAE)
- praeterita, Corbicula praeterita P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- praeteritum, Loxonema praeteritum Longst, 1909 † - (LOXONEMATIDAE) (FOSSIL)
- praeteritus, Aporrhais praeteritus O. Böttger, 1906 † - (APORRHAIDAE) (FOSSIL)
- praeteritus, Pecten praeteritus M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1898 - syn of: Flexopecten glaber (C. Linnaeus, 1758) - (PECTINIDAE)
- praetermissa, Rhachis praetermissa (W.T. Blanford & H.F. Blanford, 1861) - (CERASTUIDAE)
- praetermissa, Mitrella praetermissa K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- praetermissa, Drillia praetermissa E.A. Smith, 1904 - syn of: Naudedrillia praetermissa (E.A. Smith, 1904) - (DRILLIIDAE)
- praetermissa, Austrodrillia praetermissa E.A. Smith, 1904 - syn of: Naudedrillia praetermissa (E.A. Smith, 1904) - (HORAICLAVIDAE)
- praetermissa, Afrolittorina praetermissa (W.L. May, 1909) - (LITTORINIDAE)
- praetermissa, Nodilittorina praetermissa W.L. May, 1909 - syn of: Afrolittorina praetermissa (W.L. May, 1909) - (LITTORINIDAE)
- praetermissa, Cardiolucina praetermissa N.H. Ludbrook, 1983 † - (LUCINIDAE) (FOSSIL)
- praetermissa, Austroginella praetermissa (W.L. May, 1916) - (MARGINELLIDAE)
- praetermissa, Brotia praetermissa F. Köhler & M. Glaubrecht, 2002 - (PACHYCHILIDAE)
- praetermissa, Praenucula praetermissa Tunnicliff † - (PRAENUCULIDAE) (FOSSIL)
- praetermissa, Vitrea praetermissa F. Riedel, 1988 - (PRISTILOMATIDAE)
- praetermissa, Naudedrillia praetermissa (E.A. Smith, 1904) - (PSEUDOMELATOMIDAE)
- praetermissa, Protoma praetermissa (P. Dautzenberg, 1912) - (TURRITELLIDAE)
- praetermissi, Camaena praetermissi J.C. Cox, 1868 - (CAMAENIDAE)
- praetermissus, Bulimus praetermissus W.T. Blanford & H.F. Blanford, 1861 - syn of: Rhachis praetermissa (W.T. Blanford & H.F. Blanford, 1861) - (BULIMULIDAE)
- praetervisa, Diplommatina bicoronata praetervisa J.J. Vermeulen, 1993 - (DIPLOMMATINIDAE)
- praetexta, Limicolaria praetexta E.C. Von Martens, 1888 - (ACHATINIDAE)
- praetexta, Chama praetexta L.A. Reeve, 1847 - syn of: Chama brassica L.A. Reeve, 1847 - (CHAMIDAE)
- praetexta, Liburnica insolita praetexta (L. Pfeiffer, 1848) - (HELICIDAE)
- praetexta, Acesta praetexta White, 1887 † - (LIMIDAE) (FOSSIL)
- praetexta, Pleurotomaria praetexta Lindström, 1884 † - syn of: Euomphalopterus praetextus Lindström, 1884 † - (PLEUROTOMARIIDAE) (FOSSIL)
- praetexta, Praetextellina praetexta (E.C. Von Martens, 1865) - (TELLINIDAE)
- praetexta, Amoria praetexta (L.A. Reeve, 1849) - (VOLUTIDAE)
- praetexta, Voluta praetexta L.A. Reeve, 1849 - syn of: Amoria praetexta (L.A. Reeve, 1849) - (VOLUTIDAE)
- Praetextellina, Genus Praetextellina M. Huber, Langleit & Kreipl, 2015 (TELLINIDAE)
- praetextilis, Zetela praetextilis (H.H. Suter, 1917 †) - (SOLARIELLIDAE) (FOSSIL)
- praetextilis, Turbinella praetextilis E.H. Vokes, 1998 † - (TURBINELLIDAE) (FOSSIL)
- praetextum, Vexillum zebuense praetextum (G.B. II Sowerby, 1870) - (COSTELLARIIDAE)
- praetextus, Drymaeus praetextus (L.A. Reeve, 1850) - (BULIMULIDAE)
- praetextus, Conus praetextus L.A. Reeve, 1848 - syn of: Miliariconus encaustus (L.C. Kiener, 1845) - (CONIDAE)
- praetextus, Euomphalopterus praetextus Lindström, 1884 † - (EUOMPHALIDAE) (FOSSIL)
- praetextus, Hexabranchus praetextus C.G. Ehrenberg, 1831 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
- Praetollia, Genus Praetollia Spath, 1952 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- praetor, Eucycloscala praetor (G.A. Goldfuss, 1844 †) - (EUCYCLOSCALIDAE) (FOSSIL)
- praetoreuma, Orbitestella praetoreuma C.R. Laws, 1939 † - (ORBITESTELLIDAE) (FOSSIL)
- praetornatilis, Attenuata praetornatilis (C. Hedley, 1912) - (RISSOIDAE)
- Praetorreites, Genus Praetorreites Philip & Platel, 1994 † (HIPPURITIDAE) (FOSSIL)
- praetrigonoides, Didacna praetrigonoides Nalivkin & Anissimoff, 1914 † - (CARDIIDAE) (FOSSIL)
- praetumida, Pilula praetumida (A.E.J. Férussac) - (CHAROPIDAE)
- Praeturbonitella, Genus Praeturbonitella Heidelberger & Koch, 2005 † (NERITOPSIDAE) (FOSSIL)
- praeturonicus, Mytiloides praeturonicus Tröger, 2014 † - (INOCERAMIDAE) (FOSSIL)
- praetypica, Freiastarte praetypica T.L. Casey † - (ASTARTIDAE) (FOSSIL)
- praeundosa, Preangeria praeundosa (Vredenburg, 1924) † - (BUCCINIDAE) (FOSSIL)
- praeundulatus, Anglonautilus praeundulatus H. Lehmann & al., 2017 † - (CYMATOCERATIDAE) (FOSSIL)
- Praeundulomya, Genus Praeundulomya Dickins, 1957 † (SANGUINOLITIDAE) (FOSSIL)
- praeuntia, Cosa praeuntia (Tate 1898) † - (PHILOBRYIDAE) (FOSSIL)
- praevalidus, Leptopecten praevalidus (H.K. Jordan & L.G. Hertlein, 1926 †) - (PECTINIDAE) (FOSSIL)
- praevalidus, Antipecten praevalidus H.K. Jordan & L.G. Hertlein, 1926 † - syn of: Leptopecten praevalidus (H.K. Jordan & L.G. Hertlein, 1926 †) - (PTERIIDA (unassigned)) (FOSSIL)
- praevaricatum, Sporadoceras praevaricatum Sobolew, 1914 † - syn of: Maeneceras meridionale Frech, 1897 † - (SPORADOCERATIDAE) (FOSSIL)
- praevariegata, Mitra praevariegata R. Abrard, 1946 - syn of: Scabricola desetangsii (L.C. Kiener, 1838) - (MITRIDAE)
- praevarigata, Scabricola praevarigata R. Abrard, 1946 - syn of: Scabricola desetangsii (L.C. Kiener, 1838) - (MITRIDAE)
- praeversa, Monophorus praeversa Gruendel, 1975 † - (TRIPHORIDAE) (FOSSIL)
- praevia, Crassilina praevia Mu, 1975 † - (CRASSILINIDAE) (FOSSIL)
- praeviator, Caestocorbula praeviator P.A. Maxwell, 1992 † - (CORBULIDAE) (FOSSIL)
- Praevicula, Genus Praevicula † (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- praevigilia, Acila praevigilia Krishtofovich, 1984 † - (NUCULIDAE) (FOSSIL)
- praevirgula, Exogyra praevirgula Douville & Jourdy, 1924 † - (GRYPHAEIDAE) (FOSSIL)
- praevium, Miklukhoceras praevium Leonova, 1992 † - (MEDLICOTTIIDAE) (FOSSIL)
- praevium, Ceratopea praevium R.P. Whitfield, 1889 † - syn of: Ceratopea canadensis (Billings, 1865 †) - (RAPHISTOMATIDAE) (FOSSIL)
- praevolutus, Gyronautilus praevolutus (Kiparisova, 1961 †) - (GRYPOCERATIDAE) (FOSSIL)
- praevolutus, Clidophorus praevolutus Foerste, 1914 † - (NUCULANIDAE) (FOSSIL)
- Praewerneroceras, Genus Praewerneroceras Chlupac & Turek, 1983 † (WERNEROCERATIDAE) (FOSSIL)
- praexanthias, Benthonellania praexanthias P. Lozouet, 1990 † - (RISSOIDAE) (FOSSIL)
- praexarata, Bicorbula praexarata Cox, 1930 † - (CORBULIDAE) (FOSSIL)
- praeziczac, Aturia praeziczac P. Oppenheim, 1903 † - (ATURIIDAE) (FOSSIL)
- Pragamira, Genus Pragamira Horný , 1995 † (TRYBLIDIIDAE) (FOSSIL)
- pragense, Mariceras pragense Kolebaba, 1974 † - (SCYPHOCERATIDAE) (FOSSIL)
- pragensis, Carcassonnella pragensis Horný, 1997 † - (CARCASSONNELLIDAE) (FOSSIL)
- pragensis, Zenospira pragensis Frýda & K. Bandel, 1997 † - (CHUCHLINIDAE) (FOSSIL)
- pragensis, Hawletrochus pragensis Frýda & K. Bandel, 1997 † - (ELASMONEMATIDAE) (FOSSIL)
- pragensis, Pleurorima pragensis (E.F.R.K. Koken, 1889 †) - (GOSSELETINIDAE) (FOSSIL)
- pragensis, Neoparaliospira pragensis Frýda, 1998 † - (GOSSELETINIDAE) (FOSSIL)
- pragensis, Modiolopsis pragensis Kríž & Steinová, 2009 † - (MODIOMORPHIDAE) (FOSSIL)
- pragensis, Murchisonia pragensis Frýda & Manda, 1997 † - (MURCHISONIIDAE) (FOSSIL)
- pragensis, Pleurotomaria pragensis E.F.R.K. Koken, 1889 † - syn of: Pleurorima pragensis (E.F.R.K. Koken, 1889 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- pragensis, Bohemipleura pragensis Frýda, 1998 † - (PLEUROTOMARIOIDEA (UNASSIGNED)) (FOSSIL)
- pragensis, Dongiovannia pragensis Horný, 1992 † - (PSEUDOPHORIDAE) (FOSSIL)
- pragensis, Tropidodiscus pragensis Horný, 1963 † - (TROPIDODISCIDAE) (FOSSIL)
- Pragmopholas, syn of: Genus Pholas C. Linnaeus, 1758 (PHOLADIDAE)
- Pragoloron, Genus Pragoloron Horný , 1992 † (GOSSELETINIDAE) (FOSSIL)
- Pragoscutula, Genus Pragoscutula Frýda, 1998 † (PRAGOSCUTULIDAE) (FOSSIL)
- PRAGOSCUTULIDAE Frýda, 1998 † - Family (GASTROPODA-NERITIMORPHA [Subclass]) (FOSSIL)
- Pragoserpulina, Genus Pragoserpulina Fryda, 1998 † (PRAGOSERPULINIDAE) (FOSSIL)
- PRAGOSERPULINIDAE Frýda, 1998 † - Family (GASTROPODA-EOGASTROPODA [Subclass]-EUOMPHALINA [Order]-OPHILETOIDEA [Superfamily]) (FOSSIL)
- Pragozyga, Genus Pragozyga Frýda, 1999 † (PALAEOZYGOPLEURIDAE) (FOSSIL)
- prahovensis, Agardhia prahovensis A.V. Grossu, 1986 - (ARGNIDAE)
- prahovensis, Pyrgula prahovensis Papaianopol & Macale?, 2004 † - (HYDROBIIDAE) (FOSSIL)
- prahovensis, Viviparus prahovensis Lubenescu & Zazuleac, 1985 † - (VIVIPARIDAE) (FOSSIL)
- praia, Crassostrea praia (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- praia, Ostrea praia H.F.A. von Ihering, 1907 - syn of: Crassostrea praia (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- praiameliensis, Marginella praiameliensis C. Fernández & V. Félix-Alves, 1991 - syn of: Marginella carquejai S. Gofas & F. Fernandes, 1994 - (MARGINELLIDAE)
- prainhana, Truncatellina prainhana R. Hutterer & K. Groh, 1993 - (VERTIGINIDAE)
- praiolae, Milax praiolae F.L. Giusti, 1968 - syn of: Milax nigricans (R.A. Philippi, 1836) - (MILACIDAE)
- pralambha, Vishnuites pralambha Diener, 1897 † - (OPHICERATIDAE) (FOSSIL)
- pralongiana, Cylindrobullina pralongiana K. Bandel, 1994 † - syn of: Domerionina pralongiana (K. Bandel, 1994 †) - (CYLINDROBULLINIDAE) (FOSSIL)
- pralongiana, Domerionina pralongiana (K. Bandel, 1994 †) - (TUBIFERIDAE) (FOSSIL)
- pransa, Atys pransa C. Hedley, 1904 - (HAMINOEIDAE)
- prantli, Batteniella prantli Frýda & Manda, 1997 † - (LOPHOSPIRIDAE) (FOSSIL)
- prantli, Palaeozygopleura prantli Horný, 1955 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- prantli, Pentalina prantli Horný, 1961 † - (TRYBLIDIIDAE) (FOSSIL)
- prasantai, Bathrotomaria prasantai Das & al., 2005 † - (PLEUROTOMARIIDAE) (FOSSIL)
- prashadi, Laevifulvia prashadi E. Vidal, 1994 - syn of: Laevifulvia hungerfordi (G.B. III Sowerby, 1901) - (CARDIIDAE)
- prashadi, Tucetona prashadi (D. Nicol, 1951) - (GLYCYMERIDIDAE)
- prashadi, Glycymeris prashadi D. Nicol, 1951 - syn of: Tucetona prashadi (D. Nicol, 1951) - (GLYCYMERIDIDAE)
- prashadi, Octopus prashadi W. Adam, 1939 - (OCTOPODIDAE)
- prashadi, Camptoceras prashadi W.J. Clench, 1931 - (PLANORBIDAE)
- prashadi, Turbonilla prashadi H.C. Ray, 1968 - (PYRAMIDELLIDAE)
- prashadi, Sepia prashadi R. Winckworth, 1936 - (SEPIIDAE)
- prashadi, Solemya prashadi E.H. Vokes, 1955 - syn of: Acharax caribbaea (E.H. Vokes, 1970) - (SOLEMYIDAE)
- prashadi, Neopisidium prashadi N.H. Odhner, 1937 - syn of: Pisidium stewarti H.B. Preston, 1909 - (SPHAERIIDAE)
- prashadi, Thiara prashadi H.C. Ray, 1947 - (THIARIDAE)
- prashadi, Trapezoideus prashadi F. Haas, 1922 - (UNIONIDAE)
- Prashadia, syn of: Genus Ledella A.E. Verrill & K.J. Bush, 1897 (NUCULANIDAE)
- prasina, Mauritia prasina H.O.N. Shaw, 1909 - syn of: Mauritia arabica (C. Linnaeus, 1758) - (CYPRAEIDAE)
- prasina, Pseudamnicola prasina O.W. Von Rosen, 1903 - (HYDROBIIDAE)
- prasina, Mutela prasina A. de Rochebrune, 1886 - syn of: Mutela rostrata (P.C.A.S.L. Rang, 1835) - (IRIDINIDAE)
- Prasina, syn of: Genus Julia A. Gould, 1862 (JULIIDAE)
- prasina, Amauropsis prasina (R.B. Watson, 1881) - (NATICIDAE)
- prasina, Runcina prasina (O.A.L. Mörch, 1863) - (RUNCINIDAE)
- prasina, Anodonta prasina H. Drouët, 1894 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- prasinata, Chaetopleura prasinata P.P. Carpenter, 1864 - (CHAETOPLEURIDAE)
- prasinata, Helix prasinata J.R. Roth, 1855 - (HELICIDAE)
- prasinata, Helicina prasinata E.R. Jacobson & W.J. Clench, 1971 - (HELICINIDAE)
- prasinata, Pleurocera prasinata T.A. Conrad, 1834 - (PLEUROCERIDAE)
- prasinatus, Ischnochiton prasinatus P.P. Carpenter, 1864 - syn of: Chaetopleura lurida (G.B. I Sowerby in W.J. Broderip & G.B. I Sowerby, 1832) - (ISCHNOCHITONIDAE)
- prasinatus, Unio prasinatus T.A. Conrad, 1866 - syn of: Elliptio jayensis I. Lea, 1838 - (UNIONIDAE)
- prasinus, Polybranchia prasinus (L.S.R. Bergh, 1871) - (CALIPHYLLIDAE)
- prasinus, Lithoglyphus prasinus (H.C. Küster, 1852) - (LITHOGLYPHIDAE)
- praslinus, Pachnodus praslinus J. Gerlach, 1990 - (CERASTUIDAE)
- prasongi, Gyraulus prasongi R.A.M. Brandt, 1974 - (PLANORBIDAE)
- prasongi, Pachydrobia prasongi R.A.M. Brandt - syn of: Stenothyra prasongi R.A.M. Brandt - (POMATIOPSIDAE)
- prasongi, Pisidium prasongi J.G.J. Kuiper, 1974 - (SPHAERIIDAE)
- prasongi, Stenothyra prasongi R.A.M. Brandt - (STENOTHYRIDAE)
- pratasense, Vexillum pratasense T.C. Lan, 2004 - syn of: Tosapusia duplex (W.O. Cernohorsky, 1982) - (COSTELLARIIDAE)
- pratasensis, Marginellona pratasensis H.A. Rehder, 1967 - syn of: Marginellona gigas (E.C. Von Martens, 1904) - (MARGINELLIDAE)
- pratasensis, Neonucula pratasensis (T.C. Lan & Y.C. Lee, 2001) - (NUCULIDAE)
- pratasensis, Nucula pratasensis T.C. Lan & Y.C. Lee, 2001 - syn of: Neonucula pratasensis (T.C. Lan & Y.C. Lee, 2001) - (NUCULIDAE)
- pratasensis, Saotomea pratasensis T.C. Lan, 1997 - (VOLUTIDAE)
- pratensis, Cochlicella pratensis T.A. de M. Monterosato, 1892 - syn of: Cochlicella acuta (O.F. Müller, 1774) - (COCHLICELLIDAE)
- pratensis, Hesseola pratensis (L. Pfeiffer, 1845) - (HYGROMIIDAE)
- pratensis, Metafruticicola pratensis N.N. Akramowski, 1949 - syn of: Hesseola solidior (A. Mousson, 1863) - (HYGROMIIDAE)
- pratensis, Tandonia pratensis A. Torres Mínguez, 1923 - syn of: Tandonia sowerbyi (A.E.J. Férussac, 1823) - (MILACIDAE)
- pratensis, Elysia pratensis J.A. Ortea & J. Espinosa, 1996 - (PLAKOBRANCHIDAE)
- pratensis, Pupilla pratensis S. Clessin, 1871 - syn of: Pupilla alpicola J.G.F. de Charpentier, 1837 - (PUPILLIDAE)
- pratensis depressa, Helix pratensis depressa W. Kobelt, 1877 - syn of: Caucasocressa ibera B. Hausdorf, 2003 - (HELICIDAE)
- pratensis karabaghensis, Fruticocampylaea pratensis karabaghensis W.A. Lindholm, 1928 - syn of: Caucasocressa joannis (L.L.G. de Mortillet, 1854) - (HYGROMIIDAE)
- pratensis unicingulata, Helix pratensis unicingulata O. von Retowski, 1914 - syn of: Caucasocressa ibera B. Hausdorf, 2003 - (HELICIDAE)
- praticola, Euconulus praticola (O.W.H. Reinhardt, 1883) - (EUCONULIDAE)
- praticola, Cernuella praticola J.M. Salvañá, 1887 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- Praticola, syn of: Genus Praticolella E.C. Von Martens, 1892 (POLYGYRIDAE)
- Praticolella, Genus Praticolella E.C. Von Martens, 1892 (POLYGYRIDAE)
- pratii, Pyramidella pratii A.C. Bernardi, 1858 - (PYRAMIDELLIDAE)
- pratii, Spondylus pratii M. Parth, 1990 - (SPONDYLIDAE)
- pratoma, Odostomia pratoma W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- pratomus, Tachyrhynchus pratomus W.H. Dall, 1919 - (TURRITELLIDAE)
- Prattelix, Subgenus Millerelix (Prattelix) Emberton, 1995 (POLYGYRIDAE)
- prattenanum, Oxyprora prattenanum (J.W. Hall, 1856 †) - (BRANSONIIDAE) (FOSSIL)
- pratteni, Gosseletina pratteni (F.B. Meek & A.H. Worthen, 1860 †) - (GOSSELETINIDAE) (FOSSIL)
- pratteni, Pleurotomaria pratteni F.B. Meek & A.H. Worthen, 1860 † - syn of: Gosseletina pratteni (F.B. Meek & A.H. Worthen, 1860 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- prattenianum, Conocardium prattenianum J.W. Hall, 1856 † - syn of: Oxyprora prattenanum (J.W. Hall, 1856 †) - (CONOCARDIIDAE) (FOSSIL)
- pratti, Barbatia pratti (Morris & J. Lycett, 1948 †) - (ARCIDAE) (FOSSIL)
- pratti, Papuina pratti H.C. Fulton, 1910 - (CAMAENIDAE)
- pratti, Sonorella pratti E. Naranjo-Garcia, 1988 - (HELMINTHOGLYPTIDAE)
- pratti, Gloverilima pratti Newell, 1999 † - (PTERINOPECTINIDAE) (FOSSIL)
- pratti, Pyramidella pratti A.C. Bernardi - syn of: Pyramidella pratii A.C. Bernardi, 1858 - (PYRAMIDELLIDAE)
- pratti, Cymatiella pratti (Tenison Woods, 1879 †) - (RANELLIDAE) (FOSSIL)
- pratti, Pitar pratti (d'Archiac & Haime, 1853 †) - (VENERIDAE) (FOSSIL)
- prattii, Drillia prattii E.A. Smith, 1877 - (DRILLIIDAE)
- prattii, Ranella prattii Woods, 1878 † - (RANELLIDAE) (FOSSIL)
- prattii, Unio prattii I. Lea, 1858 - syn of: Villosa lienosa (T.A. Conrad, 1834) - (UNIONIDAE)
- Pratulum, Subgenus Nemocardium (Pratulum) T. Iredale, 1924 (CARDIIDAE)
- pratulum, Pygmaepterys pratulum E.H. Vokes & D'Attilio, 1980 † - (MURICIDAE) (FOSSIL)
- Pratumidiscus, Genus Pratumidiscus Bulot & al., 2014 † (HIMALAYITIDAE) (FOSSIL)
- prausi, Ambigua fuscolabiata prausi (G. Bacci, 1951) - (HELICIDAE)
- prava, Macrochlamys prava (W.T. Blanford, 1904) - (ARIOPHANTIDAE)
- prava, Gyrocochlea prava C. Hedley, 1924 - (CHAROPIDAE)
- prava, Diplommatina prava H.A. Pilsbry & Y. Hirase, 1905 - (DIPLOMMATINIDAE)
- prava, Hormotoma prava R.P. Whitfield, 1886 † - (MURCHISONIIDAE) (FOSSIL)
- prava, Marginodostomia prava (E. Saurin, 1962) - (PYRAMIDELLIDAE)
- prava, Claudiconcha prava Kilburn & Takard 1975 † - (VENERIDAE) (FOSSIL)
- Pravinitor, syn of: Genus Nitor G.P.L.K. Gude, 1911 (HELICARIONIDAE)
- pravis, Streptacis pravis Pan & Erwin, 2002 † - (STREPTACIDIDAE) (FOSSIL)
- Pravispira, Genus Pravispira W.A. Lindholm, 1924 (CLAUSILIIDAE)
- pravitas, Terelimella pravitas C.R. Laws, 1941 † - (PYRAMIDELLIDAE) (FOSSIL)
- Pravitoceras, Genus Pravitoceras Yabe, 1902 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Pravonitor, Genus Pravonitor T. Iredale, 1937 (HELICARIONIDAE)
- pravoslavi, Novakopteron pravoslavi Horný, 2001 † - (EUOMPHALIDAE) (FOSSIL)
- Praxidice, syn of: Genus Angaria P.F. Röding, 1798 (ANGARIIDAE)
- Praxis, syn of: Genus Mytilopsis P. Partsch, 1835 (DREISSENIDAE)
- prayensis, Erato prayensis A. de Rochebrune, 1882 - (TRIVIIDAE)
aaa
abx
ack
acy
adn
aer
afs
ajd
alc
alj
alu
amc
ams
and
anh
anp
anu
apl
arb
ard
arh
ars
asr
atl
atu
aus
aut
bab
baj
bao
bas
baw
bem
bes
bid
bim
bit
bli
bom
bos
bov
bre
bri
bry
bum
bys
caa
cak
cam
cao
cas
cau
cem
ces
che
chk
chy
cio
cle
cob
coh
com
con
coo
cos
cot
cre
cri
cru
cud
cuo
cuy
cym
daa
dam
dav
ded
dem
deo
det
dib
dih
dir
dit
dom
dos
duc
duq
eag
ecr
egg
elf
elp
enh
eov
erf
erz
eud
eus
exb
exl
exy
faa
fan
fat
fes
fim
fle
flu
fos
fre
fuf
fur
fut
gaa
gam
gav
geo
gie
gis
gle
glu
goo
gre
gru
gug
guz
haa
ham
has
heb
hem
hes
hif
his
hom
hou
hun
hye
iac
ilm
imt
ind
inf
ing
int
inu
irm
isp
jaa
jao
jaw
joi
juk
kaa
kao
kaz
kes
kio
koc
kot
kuk
laa
lad
laf
lan
las
lau
lec
leo
leq
lew
lim
lio
liu
loo
lub
lun
luv
maa
mad
mah
mam
mao
mas
mav
mee
mem
mes
mey
mid
min
mio
mit
moe
moo
mos
mum
mut
nab
nao
nav
nel
neq
nex
nih
niu
noe
nou
nue
oaf
obn
obu
oci
oke
olk
oos
orc
oro
osu
ove
paa
paf
pam
paq
pas
pau
pay
pem
pes
pfi
phl
pid
pio
ple
plo
pom
pos
pre
pro
pru
psi
pul
pum
pup
put
pys
qag
qub
rab
rah
ras
red
reh
reu
rhu
rin
roc
rot
rox
rue
ruh
ryd
saa
sai
san
sao
sav
sce
sci
scy
sem
sen
ses
shl
sih
sin
sio
smo
som
soy
sph
spj
sra
stg
sts
suc
sum
suv
szo
tab
tal
taq
tay
ten
teo
tes
tha
thl
tif
toc
tos
tre
trl
try
tuc
tus
uac
ume
uni
urd
vaa
vap
vas
vep
ves
vid
vip
vis
vob
vup
waa
wam
weg
who
wom
xac
yaa
yot
zaa
zem
zoo
|