- nuecensis, Cuphosolenus nuecensis Stanton, 1947 † - (APORRHAIDAE) (FOSSIL)
- nuestrasenorae, Strombina nuestrasenorae C.J. Maury, 1917 † - (COLUMBELLIDAE) (FOSSIL)
- nuetzeli, Zaclys nuetzeli Lauridsen & Schnetler, 2014 † - (CERITHIOPSIDAE) (FOSSIL)
- nuetzeli, Leptochondria nuetzeli Hautmann & al., 2013 † - (LEIOPECTINIDAE) (FOSSIL)
- nuetzeli, Tirolthilda nuetzeli K. Bandel, 1995 † - (MATHILDIDAE) (FOSSIL)
- nuetzeli, Neritaria nuetzeli McRoberts & Blodgett, 2000 † - (NERITARIIDAE) (FOSSIL)
- nuetzeli, Vatopsis nuetzeli A. Kaim, 2004 † - (NEWTONIELLIDAE) (FOSSIL)
- Nuetzelia, Genus Nuetzelia Brühwiler & al., 2012 † (ARCTOCERATIDAE) (FOSSIL)
- Nuetzelopsis, Genus Nuetzelopsis Frýda & al., 2003 † (NERITOPSIDAE) (FOSSIL)
- nuevagranada, Clathrodrillia nuevagranada N.E. Weisbord, 1929 † - (DRILLIIDAE) (FOSSIL)
- nuevoleonis, Humboldtiana nuevoleonis H.A. Pilsbry, 1927 - (HUMBOLDTIANIDAE)
- nugata, Palmadusta saulae nugata T. Iredale, 1935 - (CYPRAEIDAE)
- nugata crakei, Palmadusta saulae nugata crakei (J.S. Gaskoin, 1843) - (CYPRAEIDAE)
- nugatoria, Linopyrga nugatoria (C. Hedley, 1903) - (PYRAMIDELLIDAE)
- nugatoria, Strioterebrum cambiarsoi nugatoria W.P. Woodring, 1928 - (TEREBRIDAE)
- nugatorium, Bittium nugatorium J. Brown & H.A. Pilsbry, 1911 † - (CERITHIIDAE) (FOSSIL)
- nugatorium, Tubiola nugatorium J.C. Melvill, 1910 - (VANIKORIDAE)
- nugax, Anadara nugax T. Iredale, 1939 - (ARCIDAE)
- nugax, Stereophaedusa nugax H.A. Pilsbry, 1901 - (CLAUSILIIDAE)
- nugax, Phreatodrobia nugax (H.A. Pilsbry & J.H. Ferriss, 1906) - (HYDROBIIDAE)
- nugax, Jupiteria nugax J. Marwick, 1931 † - (NUCULANIDAE) (FOSSIL)
- nugenti, Pecten nugenti J. Brown, 1913 † - (PECTINIDAE) (FOSSIL)
- nuggetensis, Maoritrigonia nuggetensis (C.T. Trechmann, 1918 †) - (TRIGONIIDAE) (FOSSIL)
- nuitoensis, Costatoria nuitoensis Vukhuc, 1965 † - (MYOPHORIIDAE) (FOSSIL)
- nuka, Placunopsis nuka Imlay, 1961 † - (ANOMIIDAE) (FOSSIL)
- nukahivensis, Natica nukahivensis D.Ã.Ã.S.A Jardin, 1859 - syn of: Naticarius zonalis (C.A. Récluz, 1850) - (NATICIDAE)
- nukuhiva, Coralliophila nukuhiva M. Oliverio, 2008 - (MURICIDAE)
- nukulau, Staphylaea nukulau W.R. Steadman & B.C. Cotton, 1943 - syn of: Staphylaea staphylaea consobrina (A. Garrett, 1879) - (CYPRAEIDAE)
- nukuli, Gascoignella nukuli C.K. Swennen, 2001 - (PLATYHEDYLIDAE)
- nukumaruana, Sigapatella nukumaruana B.A. Marshall, 2003 † - (CALYPTRAEIDAE) (FOSSIL)
- nukumaruensis, Maurea nukumaruensis (C.R. Laws, 1930 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- nukumaruensis, Hamacuna nukumaruensis (C.R. Laws, 1940 †) - (CONDYLOCARDIIDAE) (FOSSIL)
- nukumaruensis, Notoacmea nukumaruensis P.G. Oliver, 1926 † - (LOTTIIDAE) (FOSSIL)
- nukumaruensis, Neoguraleus nukumaruensis Powell, 1942 † - (MANGELIIDAE) (FOSSIL)
- nukumaruensis, Rissopsetia nukumaruensis (C.R. Laws, 1940 †) - (PYRAMIDELLIDAE) (FOSSIL)
- nukumaruensis, Dosinia nukumaruensis J. Marwick, 1927 † - (VENERIDAE) (FOSSIL)
- nukumaruensis, Alcithoe nukumaruensis Murrdoch, 1920 † - (VOLUTIDAE) (FOSSIL)
- Nukupiena, Subgenus Philonesia (Nukupiena) F.C. Baker, 1949 (EUCONULIDAE)
- nullarborica, Jetwoodsia nullarborica (R. Tate, 1879 †) - (CERITHIIDAE) (FOSSIL)
- nullarboricum, Sinumelon nullarboricum (R. Tate, 1878) - (CAMAENIDAE)
- nullisecundus, Conus nullisecundus G.W. Nowell-Usticke, 1968 - syn of: Tenorioconus cedonulli (C. Linnaeus, 1767) - (CONIDAE)
- nulloi, Cryptaulax nulloi Ferrari, 2009 † - syn of: Procerithium nulloi (Ferrari, 2009 †) - (CRYPTAULACIDAE) (FOSSIL)
- nulloi, Procerithium nulloi (Ferrari, 2009 †) - (PROCERITHIIDAE) (FOSSIL)
- nullorum, Rinetrigonia nullorum (J.L. Levy, 1985 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- nullusdens, Parthenina nullusdens Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- Numaegilina, Genus Numaegilina S. Nomura, 1939 (PYRAMIDELLIDAE)
- numaensis, Barbatia numaensis H. Noda, 1966 - syn of: Acar plicata (L.W. Dillwyn, 1817) - (ARCIDAE)
- numamuranum, Bittium alutaceum numamuranum M. Yokoyama, 1924 † - (CERITHIIDAE) (FOSSIL)
- numatai, Dentalium numatai Y. Hirase, 1931 - syn of: Fustiaria nipponica (M. Yokoyama, 1922) - (DENTALIIDAE)
- numatai, Fustiaria numatai Y. Hirase, 1931 - syn of: Fustiaria nipponica (M. Yokoyama, 1922) - (FUSTIARIIDAE)
- numba, Pleuroxia oligopleura numba T. Iredale, 1939 - (CAMAENIDAE)
- numee, Kanakyella numee M. Haase & P. Bouchet, 1998 - syn of: Novacaledonia numee (M. Haase & P. Bouchet, 1998) - (HYDROBIIDAE)
- numee, Novacaledonia numee (M. Haase & P. Bouchet, 1998) - (TATEIDAE)
- Numella, Genus Numella T. Iredale, 1924 (UNGULINIDAE)
- numeria, Ceratopea numeria (Billings, 1865 †) - (RAPHISTOMATIDAE) (FOSSIL)
- numerosa, Latouchella numerosa Esakova & H. Zhegallo, 1996 † - syn of: Oelandiella korobkovi (Vostokova, 1962 †) - (COREOSPIRIDAE) (FOSSIL)
- numerosa, Plagioglypta numerosa E.K. Yoo, 1988 † - (DENTALIIDAE) (FOSSIL)
- numerosa, Palaeomutela numerosa Gusev † - (PALAEOMUTELIDAE) (FOSSIL)
- numerosa, Inella numerosa F.P. Jousseaume, 1898 - (TRIPHORIDAE)
- numerosum, Dentalium numerosum W.H. Dall in H.A. Pilsbry & B. Sharp, 1897 - syn of: Dentalium oerstedii O.A.L. Mörch, 1861 - (DENTALIIDAE)
- numerosum, Neoplatyteichum numerosum C.O. Waterhouse, 1983 † - (PLEUROTOMARIIDAE) (FOSSIL)
- numidianum, Paratropidoceras numidianum Dommergues & Meister, 2004 † - (POLYMORPHITIDAE) (FOSSIL)
- numidica, Limicolaria numidica (L.A. Reeve, 1848) - (ACHATINIDAE)
- numidica, Amnicola numidica S. Clessin, 1878 - syn of: Pseudamnicola numidica (S. Clessin, 1878) - (AMNICOLIDAE)
- numidica, Letourneuxia numidica (J.R. Bourguignat, 1866) - (ARIONIDAE)
- numidica, Bithynia numidica J.R. Bourguignat, 1864 - (BITHYNIIDAE)
- numidica, Mauritanica numidica (A. Letourneux, 1870) - (CLAUSILIIDAE)
- numidica, Pseudamnicola numidica (S. Clessin, 1878) - (HYDROBIIDAE)
- numidica, Trochoidea numidica A. Moquin-Tandon in L. Pfeiffer, 1847 - syn of: Trochoidea pyramidata (J.P.R. Draparnaud, 1805) - (HYGROMIIDAE)
- Numidica, syn of: Genus Leuchrochroa H.H. Beck, 1837 (HYGROMIIDAE)
- numidica, Leiostyla numidica J.R. Bourguignat, 1864 - syn of: Leiostyla anglica (W. Wood, 1828) - (LAURIIDAE)
- numidicus, Theodoxus numidicus (C.A. Récluz, 1841) - (NERITIDAE)
- numidicus, Planorbis numidicus J.R. Bourguignat, 1864 - syn of: Planorbis moquini E. Réquien, 1848 - (PLANORBIDAE)
- numidis, Zygopleura numidis Termier & Termier, 1977 † - (ZYGOPLEURIDAE) (FOSSIL)
- numidum, Eogaudryceras numidum (Coquand, 1880 †) - (GAUDRYCERATIDAE) (FOSSIL)
- numisma, Monetaria numisma P.F. Röding, 1798 - syn of: Monetaria moneta (C. Linnaeus, 1758) - (CYPRAEIDAE)
- numisma, Parahyotissa numisma (J.B.P.A. Lamarck, 1819) - (GRYPHAEIDAE)
- numisma, Pycnodonte numisma J.B.P.A. Lamarck, 1819 - syn of: Parahyotissa numisma (J.B.P.A. Lamarck, 1819) - (GRYPHAEIDAE)
- numisma, Ostrea numisma J.B.P.A. Lamarck, 1819 - syn of: Parahyotissa numisma (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- numisma procles, Parahyotissa numisma procles (T. Iredale, 1908) - (GRYPHAEIDAE)
- numismale, Liospira numismale (E.F.R.K. Koken, 1896 †) - (EOTOMARIIDAE) (FOSSIL)
- numismale, Tragophylloceras numismale (F.A. von Quenstedt, 1845 †) - (JURAPHYLLITIDAE) (FOSSIL)
- numismale, Mimotornoceras numismale (Petter, 1955 †) - (PINACITIDAE) (FOSSIL)
- numismale, Raphistoma numismale E.F.R.K. Koken, 1896 † - syn of: Liospira numismale (E.F.R.K. Koken, 1896 †) - (RAPHISTOMATIDAE) (FOSSIL)
- numismalis, Freiastarte numismalis (d'Orbigny 1844) † - (ASTARTIDAE) (FOSSIL)
- numismalis, Holzapfeloceras numismalis Petter, 1955 † - syn of: Mimotornoceras numismale (Petter, 1955 †) - (SOBOLEWIIDAE) (FOSSIL)
- Numismoida, syn of: Genus Parahyotissa H.W. Harry, 1985 (GRYPHAEIDAE)
- Numismoida, syn of: Genus Parahyotissa H.W. Harry, 1985 (GRYPHAEIDAE)
- nummaria, Arca nummaria C. Linnaeus, 1758 - syn of: Glycymeris nummaria (C. Linnaeus, 1758) - (ARCIDAE)
- nummaria, Crepidula nummaria A.A. Gould, 1846 - (CALYPTRAEIDAE)
- nummaria, Glycymeris nummaria (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- nummaria, Zerotula nummaria A.W.B. Powell, 1940 - (ZEROTULIDAE)
- nummismalis, Gevanites epigonus nummismalis Parnes, 1986 † - (HUNGARITIDAE) (FOSSIL)
- Nummocalcar, Genus Nummocalcar Cossmann, 1896 † (EUOMPHALIDAE) (FOSSIL)
- Nummoceras, Genus Nummoceras Ruzhentsev & Bogoslovskaya, 1971 † (FERGANOCERATIDAE) (FOSSIL)
- Nummogaultina, Genus Nummogaultina Kollmann, 2005 (TURBINIDAE) (FOSSIL)
- Nummotectus, Genus Nummotectus Conti & Fischer, 1984 † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- nummularia, Pragoloron nummularia (J. Perner, 1907 †) - (GOSSELETINIDAE) (FOSSIL)
- nummularium, Actinoceras nummularium de Sowerby & Murchison, 1839 † - syn of: Armenoceras nummularium (de Sowerby & Murchison, 1839 †) - (ACTINOCERATIDAE) (FOSSIL)
- nummularium, Armenoceras nummularium (de Sowerby & Murchison, 1839 †) - (ARMENOCERATIDAE) (FOSSIL)
- nummularius, Pycnomphalus nummularius J. Perner, 1903 † - (ANOMPHALIDAE) (FOSSIL)
- nummularius, Goniatites nummularius F.A. Roemer, 1843 † - syn of: Tornoceras nummularius (F.A. Roemer, 1843 †) - (GONIATITIDAE) (FOSSIL)
- nummularius, Tornoceras nummularius (F.A. Roemer, 1843 †) - (TORNOCERATIDAE) (FOSSIL)
- nummulina, Cymbularia nummulina E.F.R.K. Koken & J. Perner, 1925 † - (BELLEROPHONTIDAE) (FOSSIL)
- Nummulina, syn of: Subgenus Monacha (Plathytheba) H.A. Pilsbry, 1895 (HYGROMIIDAE)
- nummulina, Circe nummulina J.B.P.A. Lamarck, 1818 - syn of: Gafrarium numulinum (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- nummulitica, Candidula nummulitica E. Caziot, 1910 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- nummulitifera, Xenophora nummulitifera G.P. Deshayes, 1863 † - (XENOPHORIDAE) (FOSSIL)
- nummulitiphila, Cassis nummulitiphila F. Sacco, 1890 † - (CASSIDAE) (FOSSIL)
- nummulus, Anisus nummulus (F. Held, 1837) - (PLANORBIDAE)
- nummus, Cycloholcus nummus Knight, 1947 † - (HELCIONELLIDAE) (FOSSIL)
- nummus, Helix nummus C.G. Ehrenberg, 1831 - (HELICIDAE)
- nummus, Helicodiscus nummus E.G. Vanatta, 1899 - (HELICODISCIDAE)
- nummus, Monacha nummus (C.G. Ehrenberg, 1831) - (HYGROMIIDAE)
- nummus, Discartemon nummus (F.F. Laidlaw, 1929) - (STREPTAXIDAE)
- nummus, Cyclostremiscus nummus H.A. Pilsbry & A.A. Olsson, 1952 - (TORNIDAE)
- numulinum, Gafrarium numulinum (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- numulus, Pseudotorinia numulus (K.H. Barnard, 1963) - (ARCHITECTONICIDAE)
- Numulus-group, syn of: Genus Pseudotorinia F. Sacco, 1892 (ARCHITECTONICIDAE)
- nundaia, Clymenia nundaia J.W. Hall, 1874 † - syn of: Chutoceras nundaium (J.W. Hall, 1874 †) - (CLYMENIIDAE) (FOSSIL)
- nundaia, Goniatites nundaia J.W. Hall, 1874 † - syn of: Chutoceras nundaium (J.W. Hall, 1874 †) - (GONIATITIDAE) (FOSSIL)
- nundaium, Chutoceras nundaium (J.W. Hall, 1874 †) - (ACANTHOCLYMENIIDAE) (FOSSIL)
- nundinalis, Austrochloritis nundinalis T. Iredale, 1943 - (CAMAENIDAE)
- nundinalis, Sphaerinova nundinalis T. Iredale, 1943 - syn of: Pisidium tasmanicum J.E. Tenison-Woods, 1876 - (SPHAERIIDAE)
- nunerii, Moulinsia nunerii unknown - (PUPINIDAE)
- nunesi, Valdedorsella nunesi F. Da Silva, 1962 † - syn of: Valdedorsella falcistriata (Anthula, 1899 †) - (DESMOCERATIDAE) (FOSSIL)
- nunezi, Onoba nunezi E. Rolán & J.M. Hernández, 2004 - (RISSOIDAE)
- nunezi, Haplocochlias nunezi J. Espinosa, J.A. Ortea & R. Fernández-Garcés, 2005 - (SKENEIDAE)
- nungunoides, Sakuraeolis nungunoides W.B. Rudman, 1980 - (FACELINIDAE)
- nunivakensis, Oenopota nunivakensis W.H. Dall, 1919 - (MANGELIIDAE)
- nunivakensis, Odostomia nunivakensis W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- nunninkae, Cerastoderma nunninkae W.J. Lucas, 1984 - syn of: Cerastoderma edule (C. Linnaeus, 1758) - (CARDIIDAE)
- nunobikiensis, Aegista nunobikiensis H. OgaItô & E. Sorita, 1981 - (BRADYBAENIDAE)
- nunoi, Neritina nunoi B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (NERITIDAE) (FOSSIL)
- nuntia, Bogoslovskya nuntia P.A. Zhuravleva, 1978 † - (BOGOSLOVSKYIDAE) (FOSSIL)
- nuntia, Siphonalia nuntia A.A. Olsson, 1930 † - (BUCCINIDAE) (FOSSIL)
- nuntia, Fasciculicardia nuntia (J. Marwick, 1928 †) - (CARDITIDAE) (FOSSIL)
- nuntio, Maeneceras nuntio Becker, 1993 † - (SPORADOCERATIDAE) (FOSSIL)
- nunui, Costidiscus nodosostriatum nunui Eristavi, 1955 † - (MACROSCAPHITIDAE) (FOSSIL)
- nuorum, Kelteroceras nuorum Ermakova, 1975 † - (XENODISCIDAE) (FOSSIL)
- nupera, Pseudotorinia nupera (T.A. Conrad, 1834 †) - (ARCHITECTONICIDAE) (FOSSIL)
- nupera, Doliocassis nupera (T.A. Conrad, 1833 †) - (CASSIDAE) (FOSSIL)
- nupera, Charopa nupera J.W. Brazier, 1875 - syn of: Luinodiscus cupreus (J.C. Cox, 1868) - (CHAROPIDAE)
- nupera, Helix nupera J.W. Brazier, 1875 - syn of: Luinodiscus cupreus (J.C. Cox, 1868) - (HELICIDAE)
- nupera, Chlamys nupera T.A. Conrad, 1854 † - (PECTINIDAE) (FOSSIL)
- nuperrima, Mangelia nuperrima (N. Tiberi, 1855) - (MANGELIIDAE)
- nuperrima, Raphitoma nuperrima N. Tiberi, 1855 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (RAPHITOMIDAE)
- nuperrima, Pleurotoma nuperrima N. Tiberi, 1855 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (TURRIDAE)
- nuperrima corallinoides, Raphitoma nuperrima corallinoides R. Sturany, 1896 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (RAPHITOMIDAE)
- nuperrima pseudoacanthodes, Raphitoma nuperrima pseudoacanthodes R. Sturany, 1896 - syn of: Mangelia nuperrima (N. Tiberi, 1855) - (RAPHITOMIDAE)
- nuperus, Saghalinites nuperus (van Hoepen, 1921 †) - (TETRAGONITIDAE) (FOSSIL)
- Nuphus, Genus Nuphus J.L. van Goethem, 1975 (UROCYCLIDAE)
- Nupnus, Genus Nupnus J.L. van Goethem, 1975 (UROCYCLIDAE)
- nuptialis, Lispodesthes nuptialis (White, 1874 †) - (APORRHAIDAE) (FOSSIL)
- nuptialis, Prestonella nuptialis (J.C. Melvill & J.H. Ponsonby, 1894) - (BOTHRIEMBRYONTIDAE)
- nuptialis, Buliminus nuptialis J.C. Melvill & J.H. Ponsonby, 1894 - syn of: Prestonella nuptialis (J.C. Melvill & J.H. Ponsonby, 1894) - (ENIDAE)
- nuptialis, Odostomella nuptialis K.H.J. Thiele, 1925 - (PYRAMIDELLIDAE)
- nuquelsukia, Melongena nuquelsukia E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- nuraensis, Chaenomya nuraensis Dickins, 1963 † - (PHOLADOMYIDAE) (FOSSIL)
- Nuraya, Genus Nuraya Özdikmen & Akbulut, 2010 † (MEGATRIGONIIDAE) (FOSSIL)
- Nurekia, Genus Nurekia Z.I. Izzatullaev, T.Y. Sitnikova & Y.I. Starobogatov, 1985 (HYDROBIIDAE)
- nuriae, Arion nuriae A. Torres Mínguez, 1925 - syn of: Arion lusitanicus J.F. Mabille, 1868 - (ARIONIDAE)
- nuriae, Volvarina nuriae D. Moreno & L.P. Burnay, 1999 - (MARGINELLIDAE)
- nurinensis, Batillaria nurinensis N.H. Ludbrook, 1978 † - (BATILLARIIDAE) (FOSSIL)
- nusici, Gyraulus nusici (P.S. Pavlovic, 1903) - (PLANORBIDAE)
- nusplingensis, Trachyteuthis nusplingensis A. Fuchs, 2008 † - (TRACHYTEUTHIDIDAE) (FOSSIL)
- nussatella, Hermes nussatella (C. Linnaeus, 1758) - (CONIDAE)
- nussatella tenuis, Conus nussatella tenuis G.B. I Sowerby, 1834 - syn of: Hermes nussatella (C. Linnaeus, 1758) - (CONIDAE)
- nussatellana, Nucleolaria nussatellana G.E. Rumphius, 1705 - syn of: Nucleolaria nucleus (C. Linnaeus, 1758) - (CYPRAEIDAE)
- nussbaumae, Gibberula nussbaumae J.A. Ortea, 2015 - (CYSTISCIDAE)
- nutans, Vitreobalcis nutans (J.K. Megerle Von Mühlfeld, 1824) - (EULIMIDAE)
- nutans, Melanella nutans (Mühlfeld, 1824) - (EULIMIDAE)
- nutans, Fusiguraleus nutans (A.W.B. Powell, 1942 †) - (MANGELIIDAE) (FOSSIL)
- nutans, Opeas nutans (P.V. Gredler, 1887) - (SUBULINIDAE)
- nutans macra, Opeas nutans macra (P.V. Gredler, 1887) - (SUBULINIDAE)
- nutata, Williamia nutata C. Hedley, 1908 - syn of: Williamia radiata nutata (C. Hedley, 1908) - (SIPHONARIIDAE)
- nutata, Williamia radiata nutata (C. Hedley, 1908) - (SIPHONARIIDAE)
- nutata, Roya nutata (C. Hedley, 1908) - (TYLODINIDAE)
- nutatum, Cyrtogomphoceras nutatum (Foerste & Savage †) - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- nutatus, Capulus nutatus C. Hedley, 1908 - syn of: Williamia radiata nutata (C. Hedley, 1908) - (CAPULIDAE)
- Nutogyra, Genus Nutogyra Vialov, 1936 † (GRYPHAEIDAE) (FOSSIL)
- Nutricola, Genus Nutricola F.R. Bernard, 1982 (VENERIDAE)
- Nutricula, Genus Nutricula Kríž, 1974 † (CARDIOLIDAE) (FOSSIL)
- nutrita, Axelella nutrita B.M. Landau & al., 2012 † - (CANCELLARIIDAE) (FOSSIL)
- nuttali, Pitar nuttali (T.A. Conrad, 1834 †) - (VENERIDAE) (FOSSIL)
- Nuttalia, syn of: Genus Nuttallia W.H. Dall, 1900 (PSAMMOBIIDAE)
- nuttaliana, Lymnaea nuttaliana I. Lea, 1841 - (LYMNAEIDAE)
- nuttalii, Thyasira nuttalii T.A. Conrad, 1834 - (THYASIRIDAE)
- Nuttalina, syn of: Genus Lepidochitona J.E. Gray, 1821 (LEPIDOCHITONIDAE)
- nuttalli, Aglaja nuttalli H.A. Pilsbry, 1895 - (AGLAJIDAE)
- nuttalli, Tryonia nuttalli Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- nuttalli, Lucinisca nuttalli (T.A. Conrad, 1837) - (LUCINIDAE)
- nuttalli, Phacoides nuttalli T.A. Conrad, 1837 - syn of: Lucinisca nuttalli (T.A. Conrad, 1837) - (LUCINIDAE)
- nuttalli, Phacoides nuttalli T.A. Conrad, 1837 - syn of: Lucinisca nuttalli (T.A. Conrad, 1837) - (LUCINIDAE)
- nuttalli, Fisherola nuttalli (S.S. Haldeman, 1841) - (LYMNAEIDAE)
- nuttalli, Malleus nuttalli (T.A. Conrad, 1837) - (MALLEIDAE)
- nuttalli, Ceratostoma nuttalli (T.A. Conrad, 1837) - (MURICIDAE)
- nuttalli, Murex nuttalli T.A. Conrad, 1837 - syn of: Ceratostoma nuttalli (T.A. Conrad, 1837) - (MURICIDAE)
- nuttalli, Purpura nuttalli T.A. Conrad, 1837 - syn of: Stramonita haemastoma (C. Linnaeus, 1767) - (MURICIDAE)
- nuttalli, Bullia nuttalli R.N. Kilburn, 1978 - (NASSARIIDAE)
- nuttalli, Nassarius nuttalli (N.H. Ludbrook, 1978 †) - (NASSARIIDAE) (FOSSIL)
- nuttalli, Streptopinna nuttalli T.A. Conrad, 1837 - syn of: Pinna saccata C. Linnaeus, 1758 - (PINNIDAE)
- nuttalli, Vulsella nuttalli T.A. Conrad, 1837 - syn of: Malleus regula (P. Forsskål in C. Niebuhr, 1775) - (PTERIIDAE)
- nuttalli, Odostomia nuttalli J.J. Van Aartsen & Wesselingh, 2000 † - (PYRAMIDELLIDAE) (FOSSIL)
- nuttalli, Turbonilla nuttalli W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- nuttalli, Siphonaria nuttalli S.C.T. Hanley, 1858 - (SIPHONARIIDAE)
- nuttalli, Saxidomus nuttalli T.A. Conrad, 1837 - (VENERIDAE)
- nuttalli, Venus nuttalli T.A. Conrad, 1837 - syn of: Chione californiensis (W.J. Broderip, 1835) - (VENERIDAE)
- nuttalli, Mytilimeria nuttalli T.A. Conrad, 1837 - (VERTICORDIIDAE)
- nuttalli antecedens, Phacoides nuttalli antecedens R. Arnold, 1907 - syn of: Lucinisca nuttalli (T.A. Conrad, 1837) - (LUCINIDAE)
- nuttalli centrifugus, Phacoides nuttalli centrifugus W.H. Dall, 1901 - syn of: Lucinisca centrifuga W.H. Dall, 1901 - (LUCINIDAE)
- nuttalli kootaniensis, Fisherola nuttalli kootaniensis (W. Baird, 1863) - (LYMNAEIDAE)
- nuttalli lancides, Fisherola nuttalli lancides H.B. Hannibal, 1912 - (LYMNAEIDAE)
- nuttalli latus, Saxidomus nuttalli latus C.C. Stewart in W.P. Woodring & al., 1941 - syn of: Saxidomus nuttalli T.A. Conrad, 1837 - (VENERIDAE)
- nuttalli purpuratus, Saxidomus nuttalli purpuratus G.B. II Sowerby, 1852 - syn of: Saxidomus purpuratus (G.B. II Sowerby, 1852) - (VENERIDAE)
- Nuttallia, Genus Nuttallia W.H. Dall, 1900 (PSAMMOBIIDAE)
- nuttalliana, Fluminicola nuttalliana (I. Lea, 1838) - (LITHOGLYPHIDAE)
- nuttalliana, Stagnicola palustris nuttalliana I. Lea, 1862 - (LYMNAEIDAE)
- nuttalliana, Ladislavella elodes nuttalliana (I. Lea, 1841) - (LYMNAEIDAE)
- nuttalliana, Neoxyloma nuttalliana (I. Lea, 1841) - (SUCCINEIDAE)
- nuttalliana, Anodonta nuttalliana (I. Lea, 1838) - (UNIONIDAE)
- nuttalliana, Radiatula nuttalliana (I. Lea, 1856) - (UNIONIDAE)
- nuttalliana idahoensis, Anodonta nuttalliana idahoensis H. Hemphill, 1891 - syn of: Anodonta nuttalliana (I. Lea, 1838) - (UNIONIDAE)
- nuttallii, Clinocardium nuttallii (T.A. Conrad, 1837) - (CARDIIDAE)
- nuttallii, Tresus nuttallii (T.A. Conrad, 1837) - (MACTRIDAE)
- nuttallii, Lutraria nuttallii T.A. Conrad, 1837 - syn of: Tresus nuttallii (T.A. Conrad, 1837) - (MACTRIDAE)
- nuttallii, Mactra nuttallii L.A. Reeve, 1854 - syn of: Anatina anatina (L. Spengler, 1802) - (MACTRIDAE)
- nuttallii, Siliqua nuttallii T.A. Conrad, 1837 - syn of: Siliqua patula (G. Dixon, 1789) - (PHARIDAE)
- nuttallii, Physella nuttallii (I. Lea, 1864) - (PHYSIDAE)
- nuttallii, Nuttallia nuttallii (T.A. Conrad, 1837) - (PSAMMOBIIDAE)
- nuttallii, Sanguinolaria nuttallii T.A. Conrad, 1837 - syn of: Nuttallia nuttallii (T.A. Conrad, 1837) - (PSAMMOBIIDAE)
- nuttallii, Solecurtus nuttallii T.A. Conrad, 1837 - syn of: Siliqua patula (G. Dixon, 1789) - (SOLECURTIDAE)
- nuttallii, Thyasira nuttallii T.A. Conrad, 1837 - syn of: Tresus nuttallii (T.A. Conrad, 1837) - (THYASIRIDAE)
- nuttallii centrifuga, Lucina nuttallii centrifuga W.H. Dall, 1901 - syn of: Lucinisca centrifuga W.H. Dall, 1901 - (LUCINIDAE)
- Nuttallina, Genus Nuttallina W.H. Dall, 1871 (LEPIDOCHITONIDAE)
- nuttalliopsis, Meretrix nuttalliopsis A. Heilprin, 1878 † - (VENERIDAE) (FOSSIL)
- nuttalliopsis heilprini, Meretrix nuttalliopsis heilprini K.V.W. Palmer, 1929 † - (VENERIDAE) (FOSSIL)
- Nuttallochiton, Genus Nuttallochiton H.P. Plate, 1899 (MOPALIIDAE)
- nutteri, Nanaochlamys nutteri (R. Arnold, 1906 †) - (PECTINIDAE) (FOSSIL)
- nuttii, Colobostylus nuttii H.A. Pilsbry, 1903 - (POMATIIDAE)
- nuttingi, Calloarca nuttingi (W.H. Dall, P. Bartsch & H.A. Rehder, 1938) - (ARCIDAE)
- nuttingi, Coraliarca nuttingi W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Calloarca nuttingi (W.H. Dall, P. Bartsch & H.A. Rehder, 1938) - (ARCIDAE)
- nuttingi, Paziella nuttingi W.H. Dall, 1896 - (MURICIDAE)
- nuttingi, Turbonilla nuttingi W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- nuttingi, Turbinella nuttingi J. Henderson, 1919 - syn of: Vasum globulus nuttingi (J. Henderson, 1919) - (TURBINELLIDAE)
- nuttingi, Vasum globulus nuttingi (J. Henderson, 1919) - (TURBINELLIDAE)
- nutzeli, Cerithiopsis nutzeli M. Jay & J. Drivas, 2002 - (CERITHIOPSIDAE)
- nutzeli, Synthopsis nutzeli A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- nuuanuensis, Orobophana uberta nuuanuensis H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- nuuki, Astarte nuuki G. Høpner Petersen, 2001 - syn of: Astarte borealis (H.C.F. Schumacher, 1817) - (ASTARTIDAE)
- Nuvuca, Genus Nuvuca E.G.G. Marcus & E.A. du B. Marcus, 1967 (DISCODORIDIDAE)
- nuwuvi, Pyrgulopsis nuwuvi Hershler, Liu, Forsythe, Hovingh & Wheeler, 2017 - (HYDROBIIDAE)
- nux, Ampullaria nux L.A. Reeve, 1856 - syn of: Pila saxea (L.A. Reeve, 1856) - (AMPULLARIIDAE)
- nux, Anadara nux (G.B. I Sowerby, 1833) - (ARCIDAE)
- Nux, syn of: Genus Benthobia W.H. Dall, 1889 (BENTHOBIIDAE)
- nux, Liomesus nux (T.A. Conrad 1857 †) - (BUCCINIDAE) (FOSSIL)
- nux, Pseudoliomesus nux (W.H. Dall, 1877) - (BUCCINIDAE)
- nux, Celatoconus nux (W.H. Dall, 1892 † †) - (BUCCINIDAE) (FOSSIL)
- nux, Buccinum chishimanum nux T. Habe & K. Itô, 1965 - (BUCCINIDAE)
- nux, Naesiotus nux (W.J. Broderip, 1832) - (BULIMULIDAE)
- nux, Bulla nux K.T. Menke, 1853 - syn of: Bulla occidentalis A. Adams, 1850 - (BULLIDAE)
- nux, Calliotropis nux C. Vilvens, 2007 - (CALLIOTROPIDAE)
- nux, Coniglobus nux (O.F. von Möllendorff, 1888) - (CAMAENIDAE)
- nux, Clionella nux L.A. Reeve, 1845 - syn of: Clionella semicostata (L.C. Kiener, 1840) - (CLAVATULIDAE)
- nux, Columbella nux L.A. Reeve, 1859 - syn of: Mitrella semiconvexa (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- nux, Mitrella nux L.A. Reeve, 1859 - syn of: Mitrella semiconvexa (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- nux, Harmoniconus nux (W.J. Broderip, 1833) - (CONIDAE)
- nux, Conus nux W.J. Broderip, 1833 - syn of: Harmoniconus nux (W.J. Broderip, 1833) - (CONIDAE)
- nux, Heikea nux Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- nux, Galatea nux (H.A. Pilsbry & J.C. Bequaert, 1927) - (DONACIDAE)
- nux, Greenwoodoconcha nux (E.R. Sykes, 1900) - (EUCONULIDAE)
- nux, Benimakia nux P. Bouchet & M.A. Snyder, 2013 - (FASCIOLARIIDAE)
- nux, Tucetona nux (W.H. Dall, P. Bartsch & H.A. Rehder, 1938) - (GLYCYMERIDIDAE)
- nux, Holopea nux Lindström, 1884 † - syn of: Oriostoma nux (Lindström, 1884 †) - (HOLOPEIDAE) (FOSSIL)
- nux, Lepetodrilus nux (T.A. Okutani, K. Fujikura & T. Sasaki, 1993) - (LEPETODRILIDAE)
- nux, Lucina nux A.E. Verrill & K.J. Bush, 1900 - syn of: Clathrolucina costata (A.V.M.D. D'Orbigny, 1846) - (LUCINIDAE)
- nux, Scabricola nux G.B. Sowerby, 1874 - syn of: Scabricola potensis (R.P. Montrouzier, 1858) - (MITRIDAE)
- nux, Christolia nux (A.V.M.D. D'Orbigny, 1850 †) - (MORPHOCERATIDAE) (FOSSIL)
- nux, Coralliophila nux (L.A. Reeve, 1846) - (MURICIDAE)
- nux, Euspira nux (T.A. Okutani, 1964) - (NATICIDAE)
- nux, Oriostoma nux (Lindström, 1884 †) - (ORIOSTOMATIDAE) (FOSSIL)
- nux, Cryptopecten nux (L.A. Reeve, 1853) - (PECTINIDAE)
- nux, Pleurodonte nux (H.S. Holten, 1802) - (PLEURODONTIDAE)
- nux, Spondylus nux L.A. Reeve, 1856 - syn of: Spondylus foliaceus K. Schreibers, 1793 - (SPONDYLIDAE)
- nux, Sporadoceras nux Sobolew, 1914 † - syn of: Sporadoceras bidens (C.L.F. von Sandberger, 1851 †) - (SPORADOCERATIDAE) (FOSSIL)
- nux, Tellina nux S.C.T. Hanley, 1844 - (TELLINIDAE)
- nux, Unio nux H.C. Küster, 1861 - syn of: Dysnomia turgidula I. Lea, 1858 - (UNIONIDAE)
- nux, Pleurobema nux I. Lea, 1852 - syn of: Pleurobema perovatum T.A. Conrad, 1834 - (UNIONIDAE)
- nux, Venus nux J.F. Gmelin, 1791 - (VENERIDAE)
- nux, Voluta nux W. Wood, 1828 - syn of: Olivella biplicata (G.B. I Sowerby, 1825) - (VOLUTIDAE)
- nux basiplicatus, Naesiotus nux basiplicatus W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- nux bistriatus, Pseudoliomesus nux bistriatus (W.H. Dall, 1907) - (BUCCINIDAE)
- nux litus, Coniglobus nux litus C.K. Chang & A. Tada, 2000 - (CAMAENIDAE)
- nux monotaenius, Naesiotus nux monotaenius W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- nux paiwanis, Coniglobus nux paiwanis J.T. Kuroda, 1941 - (CAMAENIDAE)
- nux perchloris, Naesiotus nux perchloris W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- nuxavellana, Mitra nuxavellana W.L.H. Dohrn, 1860 - syn of: Nebularia pudica W.H. Pease, 1860 - (MITRIDAE)
- nuxcastanea, Mammilla nuxcastanea C. Hedley, 1913 ex T. Martyn MS - syn of: Mammilla maura (J.B.P.A. Lamarck, 1816) - (NATICIDAE)
- nuxcastaneus, Melampus nuxcastaneus J.T. Kuroda, 1949 - (ELLOBIIDAE)
- nuxdenticulata, Pleurodonte nuxdenticulata A.E.J. Férussac, 1821 - (PLEURODONTIDAE)
- nuxella, Paryphantopsis nuxella J. Slapcinsky & R. Lasley, 2007 - syn of: Paryphantopsis nucella J. Slapcinsky & R. Lasley, 2007 - (CHAROPIDAE)
- nuxfagus, Paradonax nuxfagus (H.B. Preston, 1908) - (DONACIDAE)
- nuxfragen, Donax nuxfragen H.B. Preston, 1908 - syn of: Paradonax nuxfagus (H.B. Preston, 1908) - (DONACIDAE)
- nuxmoschata, Volema nuxmoschata P.F. Röding, 1798 - syn of: Volema pyrum (J.F. Gmelin, 1791) - (MELONGENIDAE)
- nyalamense, Choristoceras nyalamense Yin & al., 2007 † - (CHORISTOCERATIDAE) (FOSSIL)
- nyalamense, Nyalamoceras nyalamense Chao & Wang, 1976 † - (HAMMATOCERATIDAE) (FOSSIL)
- Nyalamites, Genus Nyalamites Brühwiler & al., 2010 † (KASHMIRITIDAE) (FOSSIL)
- Nyalamoceras, Genus Nyalamoceras Chao & Wang, 1976 † (HAMMATOCERATIDAE) (FOSSIL)
- nyalya, Risbecia nyalya (Er. Marcus & Ev. Marcus, 1967) - (CHROMODORIDIDAE)
- nyalya, Hypselodoris nyalya Er. Marcus & Ev. Marcus, 1967 - syn of: Risbecia nyalya (Er. Marcus & Ev. Marcus, 1967) - (CHROMODORIDIDAE)
- nyalya, Mexichromis nyalya Er. Marcus & Ev. Marcus, 1967 - syn of: Risbecia nyalya (Er. Marcus & Ev. Marcus, 1967) - (CHROMODORIDIDAE)
- nyambenense, Trichotoxon nyambenense B. Verdcourt & R.M. Polhill, 1961 - (UROCYCLIDAE)
- nyambenense violaceum, Trichotoxon nyambenense violaceum B. Verdcourt & R.M. Polhill, 1961 - (UROCYCLIDAE)
- nyanangensis, Cassianella nyanangensis Wen & T.C. Lan, 1976 † - (CASSIANELLIDAE) (FOSSIL)
- nyangensis, Tanzanitrigonia nyangensis (Aitken, 1961) † - (RUTITRIGONIIDAE) (FOSSIL)
- nyangweensis, Melanoides nyangweensis C. Dupuis & S. Putzeys, 1900 - (THIARIDAE)
- nyanyana, Chelidonura nyanyana M. Edmunds, 1968 - syn of: Navanax orbignyanus (A. de Rochebrune, 1881) - (AGLAJIDAE)
- nyanzae, Ampullaria nyanzae W.D. Smith, 1892 - (AMPULLARIIDAE)
- nyanzae, Sphaerium nyanzae (E.A. Smith, 1892) - (SPHAERIIDAE)
- nyasana, Curvella nyasana E.A. Smith, 1899 - (SUBULINIDAE)
- Nyassa, Genus Nyassa J. Hall, 1869 † (NYASSIDAE) (FOSSIL)
- nyassaensis, Chambardia nyassaensis (I. Lea, 1864) - (IRIDINIDAE)
- nyassaensis, Nyassunio nyassaensis (I. Lea, 1864) - (UNIONIDAE)
- nyassaensis tanganyicensis, Unio nyassaensis tanganyicensis E.A. Smith, 1881 - syn of: Nyassunio ujijiensis (J.C.H. Crosse, 1881) - (UNIONIDAE)
- nyassaensis ujijiensis, Unio nyassaensis ujijiensis J.C.H. Crosse, 1881 - syn of: Nyassunio ujijiensis (J.C.H. Crosse, 1881) - (UNIONIDAE)
- nyassana, Corbicula nyassana J.R. Bourguignat, 1889 - syn of: Corbicula africana (C.F.F. von Krauss, 1848) - (CYRENIDAE)
- nyassana, Spathella nyassana J.R. Bourguignat, 1889 - syn of: Chambardia nyassaensis (I. Lea, 1864) - (MODIOMORPHIDAE)
- nyassana, Melanoides nyassana E.A. Smith, 1877 - (THIARIDAE)
- nyassanum, Tropidophora nyassanum E.A. Smith - (POMATIIDAE)
- nyassanus, Lanistes nyassanus W.L.H. Dohrn, 1865 - (AMPULLARIIDAE)
- nyassanus, Bulinus nyassanus E.A. Smith, 1877 - (PLANORBIDAE)
- Nyassia, syn of: Genus Melanoides G.A. Olivier, 1804 (THIARIDAE)
- NYASSIDAE S.A. Miller, 1877 † - Family (BIVALVIA-HETERODONTA [Subclass]-ARCHIHETERODONTA [Infraclass]-ACTINODONTIDA [Order]-NYASSOIDEA [Superfamily]) (FOSSIL)
- Nyassomelania, syn of: Genus Melanoides G.A. Olivier, 1804 (THIARIDAE)
- Nyassunio, Subgenus Parreysia (Nyassunio) F. Haas, 1936 (UNIONIDAE)
- nybakkeni, Gradiconus nybakkeni M.J. Tenorio, J.K. Tucker & A. Chaney, 2012 - (CONIDAE)
- nybakkeni, Saxicavella nybakkeni P.H. Scott, 1994 - (HIATELLIDAE)
- nybelini, Myonera nybelini N.H. Odhner, 1960 - syn of: Cuspidaria undata (A.E. Verrill, 1884) - (CUSPIDARIIDAE)
- Nybyoceras, Genus Nybyoceras Troedsson, 1926 † (ARMENOCERATIDAE) (FOSSIL)
- nychia, Borsonella nychia W.H. Dall, 1919 - syn of: Borsonella coronadoi (W.H. Dall, 1908) - (BORSONIIDAE)
- nychia, Turbonilla nychia P. Bartsch, 1924 - (PYRAMIDELLIDAE)
- nyctea, Doris nyctea L.S.R. Bergh, 1900 - syn of: Doris montereyensis (J.G. Cooper, 1863) - (DORIDIDAE)
- nycteis, Columbellopsis nycteis (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- nycteis, Columbella nycteis P.L. Duclos, 1846 - syn of: Columbellopsis nycteis (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- nycteis, Metoptoma nycteis Cresswell, 1893 † - syn of: Vallatotheca elegantula A.C. Chapman, 1916 † - (METOPTOMATIDAE) (FOSSIL)
- nycteis, Tryblidium nycteis (Billings, 1865 †) - (TRYBLIDIIDAE) (FOSSIL)
- nyctelia, Cecilioides nyctelia J.R. Bourguignat, 1856 - syn of: Cecilioides acicula (O.F. Müller, 1774) - (FERUSSACIIDAE)
- nyctelia, Lehmannia nyctelia (J.R. Bourguignat, 1861) - (LIMACIDAE)
- Nyctilochus, syn of: Genus Cymatium P.F. Röding, 1798 (RANELLIDAE)
- nyeggaense, Isorropodon nyeggaense E.M. Krylova, 2011 - (VESICOMYIDAE)
- nyeli, Amandana nyeli (H. Mittre, 1844) - (HYGROMIIDAE)
- nyeli ponsi, Amandana nyeli ponsi (J.G. Hidalgo, 1878) - (HYGROMIIDAE)
- nyeruensis, Eleganuculana nyeruensis C. Chen & Yang, 1983 † - (NUCULANIDAE) (FOSSIL)
- nyi, Dictyotomaria nyi (Thein & Nitecki, 1974 †) - (GOSSELETINIDAE) (FOSSIL)
- nyi, Phymatopleura nyi Thein & Nitecki, 1974 † - syn of: Dictyotomaria nyi (Thein & Nitecki, 1974 †) - (PHYMATOPLEURIDAE) (FOSSIL)
- nyikaensis, Achatina nyikaensis H.A. Pilsbry, 1909 - (ACHATINIDAE)
- nyioroensis, Limicolaria nyioroensis H.B. Preston, 1912 - (ACHATINIDAE)
- nylanderi, Valvata sincera nylanderi W.H. Dall - (VALVATIDAE)
- nylanderi, Vertigo nylanderi V. Sterki, 1909 - (VERTIGINIDAE)
- Nylanderina, Genus Nylanderina Boucot & al., 1967 † (TROPIDODISCIDAE) (FOSSIL)
- nympha, Achatinella pulcherrima nympha J.T. Gulick, 1858 - (ACHATINELLIDAE)
- Nympha, syn of: Genus Arctica H.C.F. Schumacher, 1817 (ARCTICIDAE)
- nympha, Brachioteuthis nympha G.J. Pfeffer, 1884 - syn of: Brachioteuthis riisei (J.J.S. Steenstrup, 1882) - (BRACHIOTEUTHIDAE)
- nympha, Helicostyla dactylus nympha (L. Pfeiffer, 1842) - (BRADYBAENIDAE)
- nympha, Inglisella nympha T.A. Garrard, 1975 - syn of: Brocchinia exigua (E.A. Smith, 1891) - (CANCELLARIIDAE)
- nympha, Gergovia nympha T.A. Garrard, 1975 - syn of: Brocchinia exigua (E.A. Smith, 1891) - (CANCELLARIIDAE)
- nympha, Clypeomorus nympha R.S. Houbrick, 1985 - (CERITHIIDAE)
- nympha, Spirochrysalis nympha (Münster, 1841 †) - (COELOSTYLINIDAE) (FOSSIL)
- nympha, Mitrella nympha (L.C. Kiener, 1841) - (COLUMBELLIDAE)
- nympha, Columbella nympha L.C. Kiener, 1841 - syn of: Mitrella nympha (L.C. Kiener, 1841) - (COLUMBELLIDAE)
- nympha, Opalia nympha (F.W. Hutton, 1885 †) - (EPITONIIDAE) (FOSSIL)
- nympha, Helicigona nympha P. Subai, 1996 - (HELICIDAE)
- nympha, Pseudamnicola nympha (K.E.I. von Eichwald, 1853 †) - (HYDROBIIDAE) (FOSSIL)
- nympha, Mangilia nympha P. Bartsch, 1915 - syn of: Decipifus consanguineus (G.B. III Sowerby, 1897) - (MANGELIIDAE)
- nympha, Volvarina nympha J. Espinosa & J.A. Ortea, 1998 - (MARGINELLIDAE)
- nympha, Granulina nympha (A. Henn & J.W. Brazier, 1894) - (MARGINELLIDAE)
- nympha, Mitra nympha L.A. Reeve, 1845 - (MITRIDAE)
- nympha, Purpura nympha P.L. Duclos, 1832 - syn of: Muricodrupa fiscella (J.F. Gmelin, 1791) - (MURICIDAE)
- nympha, Cupidoliva nympha (A. Adams & G.F. Angas, 1864) - (OLIVIDAE)
- nympha, Pachychilus chrysalis nympha E.C. Von Martens, 1899 - (PACHYCHILIDAE)
- nympha, Patella nympha W.H. Turton, 1932 - syn of: Scutellastra barbara (C. Linnaeus, 1758) - (PATELLIDAE)
- nympha, Chlamys nympha A.R.J.B. Bavay, 1906 - syn of: Spathochlamys benedicti (W.H. Dall, 1898) - (PECTINIDAE)
- nympha, Pseudodaphnella nympha A.E. Fedosov & N. Puillandre, 2012 - (RAPHITOMIDAE)
- nympha, Rissoella nympha (W.H. Turton, 1932) - (RISSOELLIDAE)
- nympha, Melania nympha Münster, 1841 † - syn of: Spirochrysalis nympha (Münster, 1841 †) - (THIARIDAE) (FOSSIL)
- nympha tuberculata, Clypeomorus nympha tuberculata (E.A. Smith, 1884) - (CERITHIIDAE)
- nympha venulata, Mitrella nympha venulata (G.B. III Sowerby, 1844) - (COLUMBELLIDAE)
- Nymphactra, Genus Nymphactra Stilwell & Zinsmeister, 1992 † (MACTRIDAE) (FOSSIL)
- nymphae, Erronea nymphae (J.C. Jay, 1850) - (CYPRAEIDAE)
- nymphaepratensis, Columella nymphaepratensis B.M. Pokryszko, K. Auffenberg & al., 2009 - (VERTIGINIDAE)
- nymphalis, Cranopsis nymphalis L.R.L. Simone & C.M. Cunha, 2014 - (FISSURELLIDAE)
- nymphalis, Soletellina nymphalis L.A. Reeve, 1857 - syn of: Hiatula biradiata (W. Wood, 1815) - (PSAMMOBIIDAE)
- nymphalis, Tellina nymphalis J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- nymphalis, Tellina nymphalis S.C.T. Hanley, 1846 - syn of: Tellina innominata (V. Bertin, 1878) - (TELLINIDAE)
- Nymphalucina, Genus Nymphalucina Speden, 1970 † (LUCINIDAE) (FOSSIL)
- nymphia, Pilsbryspira nymphia (H.A. Pilsbry & H.N. Lowe, 1932) - (PSEUDOMELATOMIDAE)
- nymphigena, Anodonta nymphigena H. Drouët, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- Nymphispira, Genus Nymphispira J.H. McLean, 1971 (PSEUDOMELATOMIDAE)
- Nymphogena, syn of: Genus Isabellaria W. von Vest, 1867 (CLAUSILIIDAE)
- nymphoides, Omphaloptycha nymphoides (Stoppani, 1858 †) - (COELOSTYLINIDAE) (FOSSIL)
- Nymphophilus, syn of: Genus Pyrgulopsis R.E. Call & H.A. Pilsbry, 1886 (HYDROBIIDAE)
- nyokongae, Volvarina nyokongae J.A. Ortea, 2014 - (MARGINELLIDAE)
- nyongensis, Potadoma nyongensis G.C. Spence, 1928 - (PACHYCHILIDAE)
- nyphoni, Deroceras nyphoni A.J. de Winter & L.J.M. Butot, 1986 - (AGRIOLIMACIDAE)
- nyssa, Volvarina nyssa B. Roth & E.V. Coan, 1971 - (MARGINELLIDAE)
- nyssonoides, Solariella nyssonoides J.T. Kuroda, MS T.A. Okutani, 1964 - syn of: Solariella tenuicollaris A.N. Golikov & B.I. Sirenko, 1998 - (SOLARIELLIDAE)
- nyssonus, Minolia nyssonus (W.H. Dall, 1919) - (SOLARIELLIDAE)
- nystana, Astarte nystana J. Kickx, 1835 - (ASTARTIDAE)
- nystana laekenensis, Astarte nystana laekenensis M. Glibert, 1936 - (ASTARTIDAE)
- nysti, Ancilla nysti Harmer † - (ANCILLARIIDAE) (FOSSIL)
- nysti, Ancilla nysti F.W. Harmer, 1913 † - syn of: Baryspira marinhensis (L.R. Cox, 1941 †) - (ANCILLARIIDAE) (FOSSIL)
- nysti, Asthenotoma nysti (A.V.M.D. D'Orbigny, 1847 ) - (BORSONIIDAE)
- nysti, Babylonella fusiformis nysti (R. Hoernes, 1856 †) - (CANCELLARIIDAE) (FOSSIL)
- nysti, Cerithium nysti d'Archiac, 1843 † - syn of: Cosmocerithium nysti (d'Archiac, 1843 †) - (CERITHIIDAE) (FOSSIL)
- nysti, Lentidium nysti G.P. Deshayes, 1857 † - syn of: Ajanssenium nitidum (Sowerby, 1822 †) - (CORBULIDAE) (FOSSIL)
- nysti, Cerodrillia nysti (F.W. Harmer, 1915 †) - (DRILLIIDAE) (FOSSIL)
- nysti, Trophon nysti (M. Rouault, 1850 †) - (MURICIDAE) (FOSSIL)
- nysti, Euspira nysti (A.V.M.D. D'Orbigny, 1852 †) - (NATICIDAE) (FOSSIL)
- nysti, Cosmocerithium nysti (d'Archiac, 1843 †) - (PROCERITHIIDAE) (FOSSIL)
- nysti, Flemingia nysti (de Koninck, 1881 †) - (PSEUDOPHORIDAE) (FOSSIL)
- nysti, Pseudophorus nysti de Koninck, 1881 † - syn of: Flemingia nysti (de Koninck, 1881 †) - (PSEUDOPHORIDAE) (FOSSIL)
- nysti, Alvania nysti de Koninck, 1881 † - syn of: Flemingia nysti (de Koninck, 1881 †) - (RISSOIDAE) (FOSSIL)
- nysti, Turritella nysti Briart & Cornet, 1887 † - (TURRITELLIDAE) (FOSSIL)
- nysti, Felaniella nysti (J.A.H. Bosquet, 1868 †) - (UNGULINIDAE) (FOSSIL)
- nysti, Pelecyora polytropa nysti (Orbigny, 1852) † - (VENERIDAE) (FOSSIL)
- Nystia, Genus Nystia Tournouër, 1869 † (TRUNCATELLIDAE) (FOSSIL)
- nystiana, Mytilopsis nystiana A.V.M.D. D'Orbigny, 1847 † - (DREISSENIDAE) (FOSSIL)
- nystiana, Emarginula nystiana (J.A.H. Bosquet, 1851 †) - (FISSURELLIDAE) (FOSSIL)
- nystiana, Helix nystiana L. Pfeiffer, 1845 - syn of: Trichodiscina coactiliata (A.E.J. Férussac, 1838) - (HELICIDAE)
- nystianum, Parvicardium nystianum (A.V.M.D. D'Orbigny, 1852 †) - (CARDIIDAE) (FOSSIL)
- nystianum tongricum, Parvicardium nystianum tongricum (J.F. Bayan, 1873 †) - (CARDIIDAE) (FOSSIL)
- nystianus, Drymaeus nystianus (L. Pfeiffer, 1853) - (BULIMULIDAE)
- nystianus, Thaumastus nystianus L. Pfeiffer, 1853 - syn of: Drymaeus nystianus (L. Pfeiffer, 1853) - (MEGASPIRIDAE)
- nystianus nigricans, Drymaeus nystianus nigricans A. Cousin, 1887 - syn of: Drymaeus nystianus (L. Pfeiffer, 1853) - (BULIMULIDAE)
- nystianus nigricans, Thaumastus nystianus nigricans A. Cousin, 1887 - syn of: Drymaeus nystianus (L. Pfeiffer, 1853) - (MEGASPIRIDAE)
- Nystiella, syn of: Genus Opaliopsis K.H.J. Thiele, 1928 (NYSTIELLIDAE)
- NYSTIELLIDAE Clench & Turner, 1952 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-EPITONIOIDEA [Superfamily])
- nystii, Nucunella nystii (Galeotti, 1837 †) - (LIMOPSIDAE) (FOSSIL)
- nystii, Siliqua nystii G.P. Deshayes, 1857 † - (PHARIDAE) (FOSSIL)
- nystii, Rhineoderma nystii de Koninck, 1883 † - (PLATYCERATIDAE) (FOSSIL)
- nystii, Peronaea benedeni nystii G.P. Deshayes, 1857 † - (TELLINIDAE) (FOSSIL)
- Nyuella, Genus Nyuella Rozov, 1975 † (HELCIONELLIDAE) (FOSSIL)
- nyussana, Diala nyussana (E.A. Smith, 1877) - (DIALIDAE)
- nzimaorum, Turritella nzimaorum P. Ryall & C.G. Vos, 2010 - syn of: Turritella caelata O.A.L. Mörch in R.W. Dunker, 1858 - (TURRITELLIDAE)
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