- joia, Armina joia Er. Marcus & Ev. Marcus, 1966 - (ARMINIDAE)
- jojenia, Pinna jojenia A. Aradas, 1847 - syn of: Atrina fragilis (T. Pennant, 1777) - (PINNIDAE)
- Jokajdon, Genus Jokajdon G.A. Solem, 1983 (CHAROPIDAE)
- jokelyi, Ammonites jokelyi J. Perner, 1903 † - syn of: Horiostomella otiosa J. Perner, 1903 † - (AMMONITIDA (unassigned)) (FOSSIL)
- jokelyi, Margarites jokelyi J. Von Hauer, 1855 † - syn of: Hoploscaphites nicolletii (Morton, 1842 †) - (MARGARITIDAE) (FOSSIL)
- jokelyi, Hoplotropites jokelyi (J. Von Hauer, 1855 †) - (TROPITIDAE) (FOSSIL)
- jokohamensis, Inversiunio jokohamensis (H.F.A. von Ihering, 1893) - (UNIONIDAE)
- jolandae, Marshallopsis jolandae A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- Joldagiroceras, Subgenus Arionoceras (Joldagiroceras) Myagkova, 1967 † (ARIONOCERATIDAE) (FOSSIL)
- Joleandella, syn of: Genus Joleaudella Patte, 1929 † (BELLEROPHONTIDAE) (FOSSIL)
- Joleaudella, Genus Joleaudella Patte, 1929 † (BELLEROPHONTIDAE) (FOSSIL)
- Joleaudella, syn of: Genus Bucania Hall, 1847 † (BUCANIIDAE) (FOSSIL)
- Joleaudiella, syn of: Subgenus Iberus (Massylaea) O.F. von Möllendorff, 1898 (HELICIDAE)
- joliboisi, Emericiceras joliboisi Sarkar, 1955 † - syn of: Acantholytoceras joliboisi (Sarkar, 1955 †) - (EMERICICERATIDAE) (FOSSIL)
- joliboisi, Acantholytoceras joliboisi (Sarkar, 1955 †) - (MACROSCAPHITIDAE) (FOSSIL)
- Jolietoceras, Genus Jolietoceras Foerste, 1925 † (URANOCERATIDAE) (FOSSIL)
- jolinkense, Meekoceras jolinkense Chao, 1959 † - syn of: Submeekoceras mushbachanum (White, 1879 †) - (MEEKOCERATIDAE) (FOSSIL)
- joliveti, Fusiconus joliveti (R.G. Moolenbeek, D. Röckel & P. Bouchet, 2008) - (CONIDAE)
- joliveti, Bathyconus joliveti R.G. Moolenbeek, D. Röckel & P. Bouchet, 2008 - syn of: Fusiconus joliveti (R.G. Moolenbeek, D. Röckel & P. Bouchet, 2008) - (CONIDAE)
- joliveti, Costapex joliveti (G.T. Poppe & S.P. Tagaro, 2006) - (COSTELLARIIDAE)
- jollaensis, Angulus jollaensis R.E. Dickerson, 1916 † - (TELLINIDAE) (FOSSIL)
- jolleri, Pseudocampylites jolleri Jeannet, 1951 † - (OPPELIIDAE) (FOSSIL)
- jollyanus, Epigymnites jollyanus (Oppel, 1863 †) - (GYMNITIDAE) (FOSSIL)
- jollyorum, Octopus jollyorum D.G. Reid & Wilson, 2015 - (OCTOPODIDAE)
- joloensis, Microvoluta joloensis W.O. Cernohorsky, 1970 - (VOLUTOMITRIDAE)
- Jolya, Genus Jolya J.R. Bourguignat, 1877 (MYTILIDAE)
- jolyi, Pseudogracilinenia jolyi (O. Böttger, 1880) - (CLAUSILIIDAE)
- jolyi, Pseudomelampus jolyi P.M. Pallary, 1900 - syn of: Pseudomelampus exiguus (R.T. Lowe, 1832) - (ELLOBIIDAE)
- jolyi, Epitonium jolyi (T.A. de M. Monterosato, 1878) - (EPITONIIDAE)
- jolyi, Tricolia jolyi T.A. de M. Monterosato, 1889 - syn of: Tricolia miniata (T.A. de M. Monterosato, 1884) - (PHASIANELLIDAE)
- jolyi, Leonia jolyi (P.M. Pallary, 1908) - (POMATIIDAE)
- jolyi boiteli, Leonia jolyi boiteli (P.M. Pallary, 1927) - (POMATIIDAE)
- jolyi denselineata, Tricolia jolyi denselineata T.A. de M. Monterosato, 1889 - syn of: Tricolia miniata (T.A. de M. Monterosato, 1884) - (PHASIANELLIDAE)
- jolyi flavinota, Tricolia jolyi flavinota T.A. de M. Monterosato, 1889 - syn of: Tricolia miniata (T.A. de M. Monterosato, 1884) - (PHASIANELLIDAE)
- jolyi picturata, Tricolia jolyi picturata T.A. de M. Monterosato, 1889 - syn of: Tricolia miniata (T.A. de M. Monterosato, 1884) - (PHASIANELLIDAE)
- jolyi rufopunctata, Tricolia jolyi rufopunctata T.A. de M. Monterosato, 1889 - syn of: Tricolia miniata (T.A. de M. Monterosato, 1884) - (PHASIANELLIDAE)
- jomardi, Epitonium jomardi (J.V. Audouin, 1827) - (EPITONIIDAE)
- jonae, Vexillum jonae S.I. Huang, 2017 - (COSTELLARIIDAE)
- jonasi, Pseudotorinia jonasi D. de Oliveira Tenório, J.C.N. Barros & al., 2011 - (ARCHITECTONICIDAE)
- jonasi, Helicostyla jonasi (L. Pfeiffer, 1845) - (BRADYBAENIDAE)
- jonasi, Mesembrinus jonasi (L. Pfeiffer, 1846) - (BULIMULIDAE)
- jonasi, Microcancilla jonasi J.C.N. Barros & R.E. Petit, 2007 - (CANCELLARIIDAE)
- jonasi, Mactra jonasi R.A. Philippi, 1893 - syn of: Mulinia exalbida J.E. Gray, 1837 - (MACTRIDAE)
- jonasi, Siphonaria jonasi R.W. Dunker, 1853 - syn of: Siphonaria pectinata (C. Linnaeus, 1758) - (SIPHONARIIDAE)
- jonasi stolli, Bulimulus jonasi stolli E.C. Von Martens, 1887 - syn of: Mesembrinus ghiesbreghti stolli (E.C. Von Martens, 1893) - (BULIMULIDAE)
- jonasii, Buccinum jonasii R.W. Dunker, 1846 - syn of: Nassarius jonasii (R.W. Dunker, 1846) - (BUCCINIDAE)
- jonasii, Nassarius jonasii (R.W. Dunker, 1846) - (NASSARIIDAE)
- jonasii, Parcanassa jonasii R.W. Dunker, 1846 - syn of: Nassarius jonasii (R.W. Dunker, 1846) - (NASSARIIDAE)
- jonasii, Nassa jonasii R.W. Dunker, 1846 - syn of: Nassarius jonasii (R.W. Dunker, 1846) - (NASSARIIDAE)
- jonasii, Arcularia jonasii R.W. Dunker, 1846 - syn of: Nassarius jonasii (R.W. Dunker, 1846) - (NASSARIIDAE)
- jonasseni, Nymphactra jonasseni J.D. Stilwell & Zinsmeister, 1992 † - (MACTRIDAE) (FOSSIL)
- jonassoni, Bathyacmaea jonassoni L.A. Beck, 1996 - (PECTINODONTIDAE)
- jonatani, Caecum jonatani J. Espinosa, J.A. Ortea & R. Fernández-Garcés, 2007 - (CAECIDAE)
- jonathanensis, Hypergonia jonathanensis Hoare, 2004 † - (ORTHONEMIDAE) (FOSSIL)
- jonathani, Turbo jonathani (H. Dekker, R.G. Moolenbeek & S.P. Dance, 1992) - (TURBINIDAE)
- jonathani, Aspilaturbo jonathani H. Dekker, R.G. Moolenbeek & S.P. Dance, 1992 - syn of: Turbo jonathani (H. Dekker, R.G. Moolenbeek & S.P. Dance, 1992) - (TURBINIDAE)
- joncheryacensis, Valvata joncheryacensis W.A. Wenz, 1923 † - (VALVATIDAE) (FOSSIL)
- joncheryensis, Cincinna joncheryensis W.A. Wenz, 1930 † - (VALVATIDAE) (FOSSIL)
- jonesae, Nodicostellaria jonesae E.J. Petuch, 1991 † - (COSTELLARIIDAE) (FOSSIL)
- jonesae, Echinofulgur jonesae E.J. Petuch, 1994 † - (ECHINOFULGURIDAE) (FOSSIL)
- jonesi, Rabdotus dealbatus jonesi W.J. Clench, 1937 - (BULIMULIDAE)
- jonesi, Aioloceras jonesi (Gregory & Smith, 1903 †) - (DESMOCERATIDAE) (FOSSIL)
- jonesi, Enoploteuthis jonesi C.M. Burgess, 1982 - (ENOPLOTEUTHIDAE)
- jonesi, Euchasma jonesi Pojeta & Runnegar, 1976 † - (EOPTERIIDAE) (FOSSIL)
- jonesi, Gastrioceras jonesi Miller & Owen, 1937 † - syn of: Glaphyrites excelsus (F.B. Meek, 1876 †) - (GASTRIOCERATIDAE) (FOSSIL)
- jonesi, Jonesoceras jonesi (Barrande, 1866 †) - (GEISONOCERATIDAE) (FOSSIL)
- jonesi, Helicotoma jonesi Kobayashi, 1959 † - syn of: Scalites jonesi (Kobayashi, 1959 †) - (HELICOTOMIDAE) (FOSSIL)
- jonesi, Kossmaticeras jonesi M. Collignon, 1965 † - (KOSSMATICERATIDAE) (FOSSIL)
- jonesi, Simplicioceras jonesi (Miller & Thompson, 1933 †) - (NAUTILIDAE) (FOSSIL)
- jonesi, Elimia jonesi C. Goodrich, 1936 - (PLEUROCERIDAE)
- jonesi, Psammobia jonesi Hislop, 1859 † - (PSAMMOBIIDAE) (FOSSIL)
- jonesi, Scalites jonesi (Kobayashi, 1959 †) - (RAPHISTOMATIDAE) (FOSSIL)
- jonesi, Ribeiria jonesi Pojeta & al., 1977 † - syn of: Kimopegma jonesi (Pojeta & al., 1977 †) - (RIBEIRIIDAE) (FOSSIL)
- jonesi, Yaadia jonesi Saul, 1978 † - (STEINMANELLIDAE) (FOSSIL)
- jonesi, Gulella crassidens jonesi A.C. van Bruggen, 1969 - (STREPTAXIDAE)
- jonesi, Kimopegma jonesi (Pojeta & al., 1977 †) - (TECHNOPHORIDAE) (FOSSIL)
- jonesi, Ptychobranchus jonesi (H. Van Der Schalie, 1934) - (UNIONIDAE)
- jonesiana, Notocypraea jonesiana R. Tate, 1890 † - (CYPRAEIDAE) (FOSSIL)
- jonesiana, Fumonelix jonesiana (S. Archer, 1938) - (POLYGYRIDAE)
- jonesianus, Waagenella jonesianus (de Koninck, 1863 †) - (BELLEROPHONTIDAE) (FOSSIL)
- jonesii, Odostomia jonesii A.E. Verrill & K.J. Bush, 1900 - (PYRAMIDELLIDAE)
- jonesii, Solen jonesii G.B. Sowerby, 1874 - (SOLENIDAE)
- Jonesoceras, Genus Jonesoceras Barskov, 1960 † (GEISONOCERATIDAE) (FOSSIL)
- jonesorum, Lithoconus jonesorum E.J. Petuch, 1994 † - syn of: Conus yaquensis W.M. Gabb, 1873 † - (CONIDAE) (FOSSIL)
- jonesorum, Strombus jonesorum E.J. Petuch, 1994 † - (STROMBIDAE) (FOSSIL)
- jongkindi, Gulella jongkindi A.J. de Winter, 1996 - (STREPTAXIDAE)
- jongreenlawi, Fenimorea jongreenlawi P.J. Fallon, 2016 - (DRILLIIDAE)
- joni, Pontohedyle joni K.M. Jörger & M. Schrödl, 2013 - (PARHEDYLIDAE)
- jonica, Albinaria jonica (L. Pfeiffer, 1866) - (CLAUSILIIDAE)
- jonica, Diaphana jonica S.I. Di Geronimo, 1974 - syn of: Diaphana lactea (J.G. Jeffreys, 1877) - (DIAPHANIDAE)
- jonica, Cernuella jonica (A. Mousson, 1854) - (HYGROMIIDAE)
- jonica assicola, Albinaria jonica assicola T.C.M. Kemperman & E. Gittenberger, 1990 - (CLAUSILIIDAE)
- jonica di, Diaphana jonica di S.I. Di Geronimo, 1974 - syn of: Diaphana lactea (J.G. Jeffreys, 1877) - (DIAPHANIDAE)
- jonicus, Unio crassus jonicus H. Drouët, 1879 - (UNIONIDAE)
- jonicus, Allaegopis jonicus F. Käufel, 1930 - syn of: Allaegopis ionicus (F. Käufel, 1930) - (ZONITIDAE)
- jonkairiana, Sveltia jonkairiana (P. Nyst, 1835) - (CANCELLARIIDAE)
- jonkeri, Proclava jonkeri (Martin, 1879 †) - (CERITHIIDAE) (FOSSIL)
- jonkeri, Vexillum jonkeri K. Martin, 1884 - syn of: Vexillum curviliratum (G.B. III Sowerby, 1874) - (COSTELLARIIDAE)
- jonkeri, Dentalium jonkeri Martin, 1895 † - (DENTALIIDAE) (FOSSIL)
- jonkeri, Aptyxis jonkeri E.J. Koperberg, 1931 † - (FASCIOLARIIDAE) (FOSSIL)
- jonkeri, Cavatidens jonkeri (Martin, 1916 †) - (LUCINIDAE) (FOSSIL)
- jonkeri, Hebra jonkeri K. Martin, 1883 - syn of: Nassarius gruneri (R.W. Dunker, 1846) - (NASSARIIDAE)
- jonkeri, Buccinaria jonkeri (E.J. Koperberg, 1931) - (RAPHITOMIDAE)
- jonkeri, Rissoina jonkeri E.J. Koperberg, 1931 † - (RISSOINIDAE) (FOSSIL)
- jonkersi, Adamussium jonkersi Quaglio & al., 2010 † - (PECTINIDAE) (FOSSIL)
- jonstoni, Flexopecten glaber jonstoni (S. Delle Chiaje, 1842) - (PECTINIDAE)
- joosei, Hydrobia joosei J.J. Van Aartsen, H.P.M.G. Menkhorst & E. Gittenberger, 1984 - syn of: Hydrobia glyca (G. Servain, 1880) - (HYDROBIIDAE)
- joossei, Hydrobia joossei J.J. Van Aartsen, H.P.M.G. Menkhorst & E. Gittenberger, 1984 - syn of: Hydrobia glyca (G. Servain, 1880) - (HYDROBIIDAE)
- joossi, Megalotachea joossi (Pfeffer, 1930) † - (HELICIDAE) (FOSSIL)
- joossi, Acanthopupa joossi Wenz in Fischer & Wenz, 1914 † - (VALLONIIDAE) (FOSSIL)
- Joossia, syn of: Subgenus Campylaea (Dinarica) W. Kobelt, 1902 (HELICIDAE)
- joossii, Klikia joossii (Miller, 1907) † - (HELICIDAE) (FOSSIL)
- joossii, Strobilops joossii (Gottschick, 1911) † - (STROBILOPSIDAE) (FOSSIL)
- joostei, Zemiropsis joostei A.M. Dekkers, 2008 - syn of: Zemiropsis papillaris (G.B. I Sowerby, 1825) - (BABYLONIIDAE)
- joostei, Marginella joostei W. Liltved & V.G. Millard, 1994 - (MARGINELLIDAE)
- joostei, Mitra joostei M. Lussi, 2009 - (MITRIDAE)
- Jopas, syn of: Genus Nassa P.F. Röding, 1798 (MURICIDAE)
- joppensis, Xeropicta vestalis joppensis (A. Schmidt, 1855) - (HYGROMIIDAE)
- Jopus, syn of: Genus Nassa P.F. Röding, 1798 (MURICIDAE)
- jordai, Platyla jordai C.R. Altaba, 2013 - (ACICULIDAE)
- jordanense, Euptychoceras jordanense C.E. Murphy, 1975 † - (BOCHIANITIDAE) (FOSSIL)
- jordanensis, Parachiton jordanensis (P. Anseeuw & Y. Terryn, 2004) - (LEPTOCHITONIDAE)
- jordani, Latisipho jordani (W.H. Dall, 1913) - (BUCCINIDAE)
- jordani, Alabina jordani Strong, 1938 - (CERITHIIDAE)
- jordani, Colubraria jordani A.M. Strong, 1938 - (COLUBRARIIDAE)
- jordani, Catacoeloceras jordani Guex, 1972 † - (DACTYLIOCERATIDAE) (FOSSIL)
- jordani, Fusus jordani W.H. Dall, 1913 - syn of: Latisipho jordani (W.H. Dall, 1913) - (FASCIOLARIIDAE)
- jordani, Volvarina jordani J. Espinosa, J.A. Ortea & L. Moro, 2014 - (MARGINELLIDAE)
- jordani, Nautilus jordani C.A. von Zittel, 1902 † - syn of: Cimomia sowerbyana (A.V.M.D. D'Orbigny, 1840 †) - (NAUTILIDAE) (FOSSIL)
- jordani, Theodoxus jordani G.B. I Sowerby, 1844 - (NERITIDAE)
- jordani, Chlamys jordani R. Arnold, 1903 - syn of: Chlamys rubida R.B. Hinds, 1845 - (PECTINIDAE)
- jordani, Chlamys jordani R. Arnold, 1903 - syn of: Chlamys rubida R.B. Hinds, 1845 - (PECTINIDAE)
- jordani, Pholas jordani E.C.N. van Hoepen, 1941 - syn of: Pholas dactylus C. Linnaeus, 1758 - (PHOLADIDAE)
- jordani, Thomasites jordani Pervinquiere, 1907 † - syn of: Thomasites rollandi (F. Péron, 1890 †) - (PSEUDOTISSOTIIDAE) (FOSSIL)
- jordani, Turbo jordani L.C. Kiener, 1839 - syn of: Turbo jourdani L.C. Kiener, 1839 - (TURBINIDAE)
- jordanica, Islamia jordanica Alhejoj & K. Bandel, 2013 † - (HYDROBIIDAE) (FOSSIL)
- jordanica, Melanopsis jordanica J.R. Roth, 1839 - (MELANOPSIDAE)
- jordanica, Pseudoschwartziella jordanica K. Bandel, 2006 - syn of: Schwartziella ephamilla (R.B. Watson, 1886) - (RISSOINIDAE)
- jordanica breviuscula, Melanopsis jordanica breviuscula J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- jordanica conoidaea, Melanopsis jordanica conoidaea J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- jordanica irregularis, Melanopsis jordanica irregularis A. Mousson, 1861 - (MELANOPSIDAE)
- jordanicus, Unio jordanicus J.R. Bourguignat, 1856 - syn of: Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- Jordaniella, syn of: Genus Chrysallida P.P. Carpenter, 1857 (PYRAMIDELLIDAE)
- Jordanula, syn of: Genus Chrysallida P.P. Carpenter, 1857 (PYRAMIDELLIDAE)
- jordaoi, Belgrandia jordaoi G. Holyoak, D. Holyoak & da Costa Mendes, 2017 - (HYDROBIIDAE)
- jordii, Radix jordii C.R. Altaba, 2007 - (LYMNAEIDAE)
- jordii, Turbonilla jordii A. Peñas & E. Rolán, 2002 - (PYRAMIDELLIDAE)
- jordii, Chrysallida jordii A. Peñas & E. Rolán, 1998 - syn of: Folinella moolenbeeki J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998 - (PYRAMIDELLIDAE)
- jorekensis, Ferganoconcha jorekensis (Tschernyschev, 1937 †) - (FERGANOCONCHIDAE) (FOSSIL)
- joreti, Anodon joreti P.M. Heude, 1878 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- jorfense, Beloceras jorfense W. Korn & al., 2011 † - (BELOCERATIDAE) (FOSSIL)
- Jorgechlamys, Genus Jorgechlamys del Río, 2004 † (PECTINIDAE) (FOSSIL)
- jorgefoyoi, Gibberula jorgefoyoi J. Espinosa & J.A. Ortea, 2007 - (CYSTISCIDAE)
- jorgei, Turbonilla jorgei A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- Jorgenia, Genus Jorgenia J.D. Taylor & E.A. Glover, 2009 (LUCINIDAE)
- jorgenseni, Bulimulus jorgenseni E.L. Holmberg, 1912 - (BULIMULIDAE)
- jorgenseni, Collignoniceras jorgenseni J. Kennedy & al., 2001 † - (COLLIGNONICERATIDAE) (FOSSIL)
- jorgenseni, Didymoceras jorgenseni Cobban, Kennedy & Scott, 2000 † - (NOSTOCERATIDAE) (FOSSIL)
- jorgensis, Hadriania jorgensis H.F.A. von Ihering, 1907 † - (MURICIDAE) (FOSSIL)
- jorgensis, Polinices jorgensis H.F.A. von Ihering, 1907 † - (NATICIDAE) (FOSSIL)
- jorgensis, Zygochlamys jorgensis H.F.A. von Ihering, 1907 † - (PECTINIDAE) (FOSSIL)
- jorioi, Dauciconus jorioi E.J. Petuch, 2013 - (CONIDAE)
- jorioi, Americoliva circinata jorioi (E.J. Petuch, 2013) - (OLIVIDAE)
- Jorunna, Genus Jorunna L.S.R. Bergh, 1876 (DISCODORIDIDAE)
- josae, Parthenina josae (J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000) - (PYRAMIDELLIDAE)
- josae, Chrysallida josae J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000 - syn of: Parthenina josae (J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000) - (PYRAMIDELLIDAE)
- josae, Onoba josae R.G. Moolenbeek & H.J. Hoenselaar, 1987 - syn of: Alvania joseae H.J. Hoenselaar & J. Goud, 1998 - (RISSOIDAE)
- Josanautilus, Genus Josanautilus Martínez & Grauges, 2006 † (CENOCERATIDAE) (FOSSIL)
- joschristiaensis, Fissurisepta joschristiaensis J. Drivas & M. Jay, 1985 - syn of: Puncturella nana (C.B. Adams, 1872) - (FISSURELLIDAE)
- joseae, Alvania joseae H.J. Hoenselaar & J. Goud, 1998 - (RISSOIDAE)
- josealejandroi, Prunum josealejandroi J. Espinosa, L. Moro & J.A. Ortea, 2011 - (MARGINELLIDAE)
- joseana, Cochliopa joseana J.P.E. Morrison, 1946 - (COCHLIOPIDAE)
- joseana, Polymesoda joseana J.P.E. Morrison, 1946 - syn of: Polymesoda inflata (R.A. Philippi, 1851) - (CYRENIDAE)
- joseana, Detracia joseana J.P.E. Morrison, 1946 - (ELLOBIIDAE)
- joseana, Laevapex joseana (J.P.E. Morrison, 1946) - (PLANORBIDAE)
- joseantonioi, Astyris joseantonioi J. Espinosa & J.A. Ortea, 2014 - (COLUMBELLIDAE)
- joseantonioi, Turbonilla joseantonioi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- josecarlosi, Amalda josecarlosi G. Pastorino, 2003 - (ANCILLARIIDAE)
- josefae, Liguus fasciatus josefae R.P. Guitart, 1945 - (ORTHALICIDAE)
- josefinae, Vexillum josefinae H. Sarasúa, 1985 - syn of: Vexillum semifasciatum (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- josefinae, Heudeia josefinae A.J. Wagner, 1905 - (HELICINIDAE)
- josefoi, Alvania josefoi P.G. Oliver & J. Templado, 2009 - (RISSOIDAE)
- josefstraussi, Opacuincola josefstraussi M. Haase, 2008 - (TATEIDAE)
- Josefus, Genus Josefus B. Arconada & M.A. Ramos, 2006 (HYDROBIIDAE)
- josei, Conasprella josei (E.J. Petuch & D.P. Berschauer, 2016) - (CONIDAE)
- josei, Napaeus josei J. Santana, M.R. Alonso & C.M. Ibáñez, 2011 - (ENIDAE)
- josei, Fusinus josei R. Hadorn & B. Rogers, 2000 - (FASCIOLARIIDAE)
- josei, Leptochiton josei Dell'Angelo & al., 2013 † - (LEPTOCHITONIDAE) (FOSSIL)
- josei, Muricopsis josei E.H. Vokes, 1994 - (MURICIDAE)
- josei, Anodonta josei J. Da Silva e Castro, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- josepedroi, Euthria josepedroi E. Rolán & A. Monteiro, 2007 - (BUCCINIDAE)
- Josepha, Subgenus Cominella (Josepha) J.E. Tenison-Woods, 1878 (BUCCINIDAE)
- josepha, Murchisonia josepha G.A. Goldfuss, 1844 † - syn of: Murchisonia fusiformis (B. Phillips, 1836 †) - (MURCHISONIIDAE) (FOSSIL)
- josephi, Cerion josephi W.J. Clench & C.G. Aguayo, 1949 - (CERIONIDAE)
- josephi, Tyrrheniellina josephi (F.L. Giusti & G. Manganelli, 1989) - (HYGROMIIDAE)
- josephi, Boskovicia josephi (Š. Brusina, 1874 †) - (LYMNAEIDAE) (FOSSIL)
- josephi, Turbonilla josephi (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- josephi, Charisma josephi (J.E. Tenison-Woods, 1877) - (TROCHIDAE)
- josephi portuspatris, Cerion josephi portuspatris C.G. Aguayo & M.I. Sánchez Roig, 1953 - (CERIONIDAE)
- josephianum, Sactoceras josephianum Foerste, 1933 † - syn of: Proteoceras tyronensis (Foerste, 1912 †) - (POLYDESMIIDAE) (FOSSIL)
- josephica, Gregoia josephica Fehse, 2017 - (TRIVIIDAE)
- josephina, Neverita josephina A. Risso, 1826 - syn of: Neverita josephinia (A. Risso, 1826) - (NATICIDAE)
- josephinae, Anatoma josephinae N.H. Odhner, 1960 - syn of: Anatoma tenuis (J.G. Jeffreys, 1877) - (ANATOMIDAE)
- josephinae, Kalidos josephinae K.C. Emberton, 2009 - (ARIOPHANTIDAE)
- josephinae, Belemnites josephinae Honnorat-Bastide, 1890 † - syn of: Hibolithes josephinae (Honnorat-Bastide, 1890 †) - (BELEMNITELLIDAE) (FOSSIL)
- josephinae, Trigonostoma geslini josephinae A.W. Janssen, 1984 - (CANCELLARIIDAE)
- josephinae, Strophiops josephinae W.J. Clench, 1935 - (CERIONIDAE)
- josephinae, Isabellaria perplana josephinae (O. Böttger, 1880) - (CLAUSILIIDAE)
- josephinae, Medora dalmatina josephinae H. Nordsieck, 1970 - (CLAUSILIIDAE)
- josephinae, Africonus josephinae (E. Rolán, 1980) - (CONIDAE)
- josephinae, Plesiocystiscus josephinae (F. Fernandes & E. Rolán, 1992) - (CYSTISCIDAE)
- josephinae, Eulitoma josephinae P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- josephinae, Fauxulus josephinae K.C. Emberton & R.J. Griffiths, 2009 - (FAUXULIDAE)
- josephinae, Helix josephinae A.E.J. Férussac, 1821 - syn of: Pleurodonte josephinae (A.E.J. Férussac, 1821) - (HELICIDAE)
- josephinae, Priotrochatella josephinae (C.B. Adams, 1849) - (HELICINIDAE)
- josephinae, Acanthopecten josephinae (C. Gemmellaro, 1896 †) - (LIMIPECTINIDAE) (FOSSIL)
- josephinae, Hibolithes josephinae (Honnorat-Bastide, 1890 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- josephinae, Pleurodonte josephinae (A.E.J. Férussac, 1821) - (PLEURODONTIDAE)
- josephinae, Cyclotopsis josephinae (K.C. Emberton, 2003) - (POMATIIDAE)
- josephinae, Avicula josephinae C. Gemmellaro, 1896 † - syn of: Acanthopecten josephinae (C. Gemmellaro, 1896 †) - (PTERIIDAE) (FOSSIL)
- josephinae, Gofasia josephinae P. Bouchet & A. Warén, 1993 - (RISSOIDAE)
- josephinae, Scissurella josephinae N.H. Odhner, 1960 - syn of: Anatoma tenuis (J.G. Jeffreys, 1877) - (SCISSURELLIDAE)
- josephinae, Vetulonia josephinae W.H. Dall, 1927 - syn of: Vetulonia paucivaricosa (P. Dautzenberg, 1889) - (SEGUENZIOIDEA (unassigned))
- josephinae, Fischerpietteus josephinae K.C. Emberton & R.J. Griffiths, 2009 - (STREPTAXIDAE)
- Josephinella, Subgenus Chilostoma (Josephinella) F. Haas, 1936 (HELICIDAE)
- josephinia, Neverita josephinia (A. Risso, 1826) - (NATICIDAE)
- josephinia, Natica josephinia A. Risso, 1826 - syn of: Neverita josephinia (A. Risso, 1826) - (NATICIDAE)
- josephinia, Plocostoma josephinia C. Gemmellaro, 1889 † - (PLEUROTOMARIIDAE) (FOSSIL)
- josephinia aegyptiaca, Natica josephinia aegyptiaca P.M. Pallary, 1912 - syn of: Neverita josephinia (A. Risso, 1826) - (NATICIDAE)
- josephinia caelata, Natica josephinia caelata M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1883 - syn of: Neverita josephinia (A. Risso, 1826) - (NATICIDAE)
- josephus, Drymaeus josephus G.F. Angas, 1878 - (BULIMULIDAE)
- Josephus, syn of: Genus Josefus B. Arconada & M.A. Ramos, 2006 (HYDROBIIDAE)
- josephus concolor, Drymaeus josephus concolor E.C. Von Martens, 1893 - (BULIMULIDAE)
- josephus errans, Drymaeus josephus errans H.A. Pilsbry, 1926 - (BULIMULIDAE)
- josephus maculosus, Drymaeus josephus maculosus E.C. Von Martens, 1893 - (BULIMULIDAE)
- joserita, Acanthoceras joserita Stoyanow, 1949 † - (ACANTHOCERATIDAE) (FOSSIL)
- joserochoi, Africonus joserochoi T. Cossignani, 2014 - (CONIDAE)
- joserosadoi, Myurella joserosadoi (L. Bozzetti, 2001) - (TEREBRIDAE)
- josettae, Pyrgolidium josettae (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- joshi, Chromodoris joshi T.M. Gosliner & D.W. Behrens, 1998 - (CHROMODORIDIDAE)
- joshuana, Hemiliostraca joshuana (J.H. Gatliff & C.J. Gabriel, 1910) - (EULIMIDAE)
- josiai, Siphocypraea josiai D. Fehse, 1997 † - (CYPRAEIDAE) (FOSSIL)
- josianae, Bythiospeum josianae Callot-Girardi, Wienin, Girardi & Racamond, 2017 - (HYDROBIIDAE)
- josieae, Volvarina josieae J. Espinosa & J.A. Ortea, 2012 - (MARGINELLIDAE)
- jossae, Goniatites jossae de Verneuil, 1845 † - syn of: Paragastrioceras jossae (de Verneuil, 1845 †) - (GONIATITIDAE) (FOSSIL)
- jossae, Paragastrioceras jossae (de Verneuil, 1845 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- josseti, Unio josseti J.R. Bourguignat, 1886 - syn of: Coelatura horei josseti J.R. Bourguignat, 1886 - (UNIONIDAE)
- josseti, Coelatura horei josseti J.R. Bourguignat, 1886 - (UNIONIDAE)
- josslingi, Oppenheimopecten josslingi (Smith, 1857 †) - (PECTINIDAE) (FOSSIL)
- Josticeras, Genus Josticeras Vasícek & Klajmon, 1998 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- jotum, Bittium jotum (L. Pfeiffer, 1848) - (CERITHIIDAE)
- jouani, Pedipes jouani R.P. Montrouzier, 1862 - (ELLOBIIDAE)
- jouani philippinica, Pedipes jouani philippinica O.F. von Möllendorff, 1893 - (ELLOBIIDAE)
- Jouaniceras, Genus Jouaniceras Basse, 1939 † (NOSTOCERATIDAE) (FOSSIL)
- jouanneti, Megacardita jouanneti (B. de Basterot, 1825 †) - (CARDITIDAE) (FOSSIL)
- jouanneti, Venericardia jouanneti B. de Basterot, 1825 † - syn of: Megacardita jouanneti (B. de Basterot, 1825 †) - (CARDITIDAE) (FOSSIL)
- jouanneti, Perrona jouanneti C. des Moulins, 1842 † - (CLAVATULIDAE) (FOSSIL)
- jouanneti, Fasciolaria jouanneti C. Mayer, 1864 † - syn of: Pleuroploca michelottiana (J.P.S. Grateloup, 1847 †) - (FASCIOLARIIDAE) (FOSSIL)
- jouanneti bearnensis, Megacardita jouanneti bearnensis A.E.M. Cossmann & M.A. Peyrot, 1912 † - (CARDITIDAE) (FOSSIL)
- jouanneti brocchii, Megacardita jouanneti brocchii O.G. Michelotti, 1839 † - syn of: Megacardita brocchii (O.G. Michelotti, 1839 †) - (CARDITIDAE) (FOSSIL)
- jouanneti consobrina, Megacardita jouanneti consobrina A.E.M. Cossmann & M.A. Peyrot, 1912 † - (CARDITIDAE) (FOSSIL)
- jouanneti descendens, Perrona jouanneti descendens (Hilber, 1879 †) - (CLAVATULIDAE) (FOSSIL)
- jouanneti laeviplana, Cardita jouanneti laeviplana Depéret, 1839 † - syn of: Megacardita laeviplana (Depéret, 1839 †) - (CARDITIDAE) (FOSSIL)
- jouanneti taurobrevis, Megacardita jouanneti taurobrevis F. Sacco, 1899 † - syn of: Megacardita brocchii (O.G. Michelotti, 1839 †) - (CARDITIDAE) (FOSSIL)
- Jouannetia, Genus Jouannetia C. des Moulins, 1828 (PHOLADIDAE)
- jouberti, Burtoa jouberti J.R. Bourguignat, 1889 - (ACHATINIDAE)
- jouberti, Lanistes jouberti (J.R. Bourguignat, 1888) - (AMPULLARIIDAE)
- jouberti, Tulochilus jouberti S. Kiel & K. Bandel, 2002 † - (APORRHAIDAE) (FOSSIL)
- jouberti, Corbicula jouberti Germain, 1906 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- jouberti, Moncetia jouberti J.R. Bourguignat, 1886 - syn of: Moncetia anceyi J.R. Bourguignat, 1885 - (IRIDINIDAE)
- jouberti, Mutela jouberti J.R. Bourguignat, 1886 - syn of: Mutela soleniformis J.R. Bourguignat, 1885 - (IRIDINIDAE)
- jouberti, Quenstedtia jouberti L.R. Cox, 1965 † - (QUENSTEDTIIDAE) (FOSSIL)
- jouberti, Subulina jouberti J.R. Bourguignat, 1889 - (SUBULINIDAE)
- jouberti, Unio jouberti J.R. Bourguignat, 1886 - syn of: Coelatura horei jouberti J.R. Bourguignat, 1886 - (UNIONIDAE)
- jouberti, Burtonia jouberti J.R. Bourguignat, 1886 - syn of: Pseudospatha tanganyicensis (E.A. Smith, 1880) - (UNIONIDAE)
- jouberti, Coelatura horei jouberti J.R. Bourguignat, 1886 - (UNIONIDAE)
- jouberti, Neothauma jouberti J.R. Bourguignat, 1888 - (VIVIPARIDAE)
- Joubertia, Subgenus Laevigera (Joubertia) J.R. Bourguignat, 1888 (PLEUROCERIDAE)
- joubertianum, Crioceratites joubertianum A.V.M.D. D'Orbigny, 1850 † - (CRIOCERATITIDAE) (FOSSIL)
- joubini, Limicolaria joubini A. de Rochebrune & J. Germain, 1904 - (ACHATINIDAE)
- joubini, Drymaeus joubini J. Germain, 1907 - (BULIMULIDAE)
- joubini, Chiroteuthis joubini N.A. Voss, 1967 - (CHIROTEUTHIDAE)
- joubini, Kaliella joubini P. Dautzenberg & H. Fischer, 1905 - (CHRONIDAE)
- joubini, Corinnaeturris joubini P. Dautzenberg & H. Fischer, 1906 - syn of: Corinnaeturris leucomata (W.H. Dall, 1881) - (CLATHURELLIDAE)
- joubini, Helicocranchia joubini (N.A. Voss, 1962) - (CRANCHIIDAE)
- joubini, Geitodoris joubini (A.J.B.M. Vayssière, 1919) - (DISCODORIDIDAE)
- joubini, Carryodoris joubini A.J.B.M. Vayssière, 1919 - syn of: Geitodoris joubini (A.J.B.M. Vayssière, 1919) - (DISCODORIDIDAE)
- joubini, Cirsotrema joubini M.E.A. de Boury, 1913 - syn of: Cirsotrema varicosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- joubini, Niso joubini P. Dautzenberg & H. Fischer, 1897 - syn of: Costaclis mizon (R.B. Watson, 1881) - (EULIMIDAE)
- joubini, Favorinus joubini (J.J. Risbec, 1928) - (FACELINIDAE)
- joubini, Goniodoris joubini J.J. Risbec, 1928 - (GONIODORIDIDAE)
- joubini, Cernuella joubini J. Germain - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- joubini, Mutela joubini (J. Germain, 1904) - (IRIDINIDAE)
- joubini, Volvarina joubini (P. Dautzenberg & H. Fischer, 1906) - (MARGINELLIDAE)
- joubini, Prunum joubini A.R.J.B. Bavay, 1913 - syn of: Prunum bahiense (J.R. le B. Tomlin, 1917) - (MARGINELLIDAE)
- joubini, Falsilunatia joubini (É. Lamy, 1911) - (NATICIDAE)
- joubini, Octopus joubini C.W. Robson, 1929 - (OCTOPODIDAE)
- joubini, Turbonilla joubini P. Dautzenberg, 1912 - (PYRAMIDELLIDAE)
- joubini, Turbonilla joubini A. Peñas, J. Templado & I. Martínez, 1996 - syn of: Pyrgiscus abrardi (E. Fischer-Piette & M. Nicklés, 1946) - (PYRAMIDELLIDAE)
- joubini, Sepia joubini A.L. Massy, 1927 - (SEPIIDAE)
- joubini, Ennea joubini (J. Germain, 1923) - (STREPTAXIDAE)
- joubini, Gibbula joubini P. Dautzenberg, 1910 - (TROCHIDAE)
- joubini, Pleurotoma joubini P. Dautzenberg & H. Fischer, 1906 - syn of: Corinnaeturris leucomata (W.H. Dall, 1881) - (TURRIDAE)
- joubini, Turris joubini P. Dautzenberg & H. Fischer, 1906 - syn of: Corinnaeturris leucomata (W.H. Dall, 1881) - (TURRIDAE)
- Joubinia, syn of: Genus Robsonella W. Adam, 1938 (OCTOPODIDAE)
- Joubiniopsis, Genus Joubiniopsis J.J. Risbec, 1928 (POLYCERIDAE)
- JOUBINITEUTHIDAE Naef, 1922 - Family (CEPHALOPODA-COLEOIDEA [Subclass]-DECAPODIFORMES [Superorder]-OEGOPSIDA [Order])
- Joubiniteuthis, Genus Joubiniteuthis S.S. Berry, 1920 (JOUBINITEUTHIDAE)
- Joufia, Genus Joufia Boehm, 1897 † (RADIOLITIDAE) (FOSSIL)
- jourdani, Anahamulina jourdani (Astier, 1851 †) - (ANAHAMULINIDAE) (FOSSIL)
- jourdani, Ancyloceras jourdani Astier, 1851 † - syn of: Liautaudia fumisuginiformis J.J. Vermeulen & al., 2012 † - (ANCYLOCERATIDAE) (FOSSIL)
- jourdani, Cenoceras jourdani (Dumortier, 1874 †) - (CENOCERATIDAE) (FOSSIL)
- jourdani, Varioconus jourdani (A.J. Da Motta, 1984) - (CONIDAE)
- jourdani, Nautilus jourdani Dumortier, 1874 † - syn of: Cenoceras jourdani (Dumortier, 1874 †) - (NAUTILIDAE) (FOSSIL)
- jourdani, Turbo jourdani L.C. Kiener, 1839 - (TURBINIDAE)
- jourdani, Lyrodiscus jourdani (Michaud, 1862) † - (ZONITIDAE) (FOSSIL)
- jourdaniana, Otala jourdaniana (J.R. Bourguignat, 1867) - (HELICIDAE)
- jourdei, Bythinella jourdei R. Bernasconi, 2000 - (BYTHINELLIDAE)
- jourdheuili, Anodonta jourdheuili J.R. Bourguignat, 1881 ex J. Ray MS - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- jourdheuili, Aegopinella jourdheuili J.J. Ray, 1880 - syn of: Aegopinella nitens (A. Michaud, 1831) - (ZONITIDAE)
- jourdyi, Bradybaena jourdyi (L.J. Morlet, 1887) - (BRADYBAENIDAE)
- jourdyi, Cyclophorus jourdyi (L.J. Morlet, 1886) - (CYCLOPHORIDAE)
- jourdyi, Cyclophorus jourdyi P.M.A. Morelet, 1886 - syn of: Cyclophorus jourdyi (L.J. Morlet, 1886) - (CYCLOPHORIDAE)
- jourdyi, Helix jourdyi L.J. Morlet, 1887 - syn of: Bradybaena jourdyi (L.J. Morlet, 1887) - (HELICIDAE)
- Jourdyi, Helix Jourdyi L.J. Morlet, 1886 - syn of: Cyclophorus jourdyi (L.J. Morlet, 1886) - (HELICIDAE)
- jourdyi, Geotrochatella jourdyi P. Dautzenberg, 1895 - (HELICINIDAE)
- jourdyi, Oxynaia jourdyi (L.J. Morlet, 1886) - (UNIONIDAE)
- jourdyi corrugata, Oxynaia jourdyi corrugata (P. Dautzenberg & H. Fischer, 1905) - (UNIONIDAE)
- jourdyi minor, Bradybaena jourdyi minor L.J. Morlet, 1887 - (BRADYBAENIDAE)
- jourdyi ponderosa, Oxynaia jourdyi ponderosa (P. Dautzenberg & H. Fischer, 1905) - (UNIONIDAE)
- journeopsis, Anodonta journeopsis R. Schröder, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- journoti, Crioceratites journoti Sarkar, 1955 † - syn of: Emericiceras journoti Sarkar, 1955 † - (CRIOCERATITIDAE) (FOSSIL)
- journoti, Emericiceras journoti Sarkar, 1955 † - (EMERICICERATIDAE) (FOSSIL)
- Jousseaumea, Genus Jousseaumea F. Sacco, 1894 † (CYPRAEIDAE) (FOSSIL)
- jousseaumeana, Gari jousseaumeana V. Bertin, 1880 - (PSAMMOBIIDAE)
- jousseaumei, Anadara jousseaumei (É. Lamy, 1907) - (ARCIDAE)
- jousseaumei, Drymaeus jousseaumei P. Dautzenberg, 1901 - (BULIMULIDAE)
- jousseaumei, Cerithiopsis jousseaumei M. Jay & J. Drivas, 2002 - (CERITHIOPSIDAE)
- jousseaumei, Ceratosoma jousseaumei A. de Rochebrune, 1894 - syn of: Ceratosoma tenue F.D. Abraham, 1876 - (CHROMODORIDIDAE)
- jousseaumei, Glyphostoma jousseaumei R.P.J. Hervier, 1896 - (CLATHURELLIDAE)
- jousseaumei, Pardalinops jousseaumei (J. Drivas & M. Jay, 1997) - (COLUMBELLIDAE)
- jousseaumei, Pyrene jousseaumei J. Drivas & M. Jay, 1997 - syn of: Pardalinops jousseaumei (J. Drivas & M. Jay, 1997) - (COLUMBELLIDAE)
- jousseaumei, Conus jousseaumei M. Couturier, 1891 - syn of: Thalassiconus thomae (J.F. Gmelin, 1791) - (CONIDAE)
- jousseaumei, Bathytormus jousseaumei (É. Lamy, 1919) - (CRASSATELLIDAE)
- jousseaumei, Macrocypraea jousseaumei A.J.B.M. Vayssière, 1905 - syn of: Macrocypraea cervus (C. Linnaeus, 1771) - (CYPRAEIDAE)
- jousseaumei, Dendrodoris jousseaumei (A.J.B.M. Vayssière, 1912) - (DENDRODORIDIDAE)
- jousseaumei, Drillia jousseaumei P. Dautzenberg, 1900 - syn of: Lioglyphostoma jousseaumei (P. Dautzenberg, 1900) - (DRILLIIDAE)
- jousseaumei, Epitonium jousseaumei (M.E.A. de Boury, 1886) - (EPITONIIDAE)
- jousseaumei, Parviscala jousseaumei É.A.A. Locard, 1892 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- jousseaumei, Crisposcala jousseaumei M.E.A. de Boury, 1886 - syn of: Epitonium jousseaumei (M.E.A. de Boury, 1886) - (EPITONIIDAE)
- jousseaumei, Epitonium jousseaumei É.A.A. Locard, 1892 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- jousseaumei, Candidula jousseaumei J.F. Mabille - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- jousseaumei, Marginella jousseaumei É.A.A. Locard, 1897 - syn of: Marginella subturrita P. Fischer, 1884 - (MARGINELLIDAE)
- jousseaumei, Murex jousseaumei N.J. Poirier, 1883 - syn of: Triplex microphyllus (J.B.P.A. Lamarck, 1816) - (MURICIDAE)
- jousseaumei, Nassa jousseaumei É.A.A. Locard, 1886 - syn of: Tritia incrassata (H. Strøm, 1768) - (NASSARIIDAE)
- jousseaumei, Natica jousseaumei F.M. Euthyme, 1885 - syn of: Notocochlis cernica (F.P. Jousseaume, 1874) - (NATICIDAE)
- jousseaumei, Paraperonia jousseaumei (A. Labbé, 1934) - (ONCHIDIIDAE)
- jousseaumei, Veprichlamys jousseaumei (A.R.J.B. Bavay, 1904) - (PECTINIDAE)
- jousseaumei, Clatrosansonia jousseaumei (A.R.J.B. Bavay, 1921) - (PICKWORTHIIDAE)
- jousseaumei, Bulinus jousseaumei P. Dautzenberg, 1890 - (PLANORBIDAE)
- jousseaumei, Lioglyphostoma jousseaumei (P. Dautzenberg, 1900) - (PSEUDOMELATOMIDAE)
- jousseaumei, Taranis jousseaumei É. Lamy, 1934 - syn of: Taranis allo (F.P. Jousseaume, 1934) - (RAPHITOMIDAE)
- jousseaumei, Pusillina jousseaumei P. Dautzenberg & H. Fischer, 1896 - syn of: Rissoa guernei P. Dautzenberg, 1889 - (RISSOIDAE)
- jousseaumei, Schizochiton jousseaumei C. Dupuis, 1917 - (SCHIZOCHITONIDAE)
- jousseaumei, Curvella jousseaumei J.J.M. de Morgan, 1885 - (SUBULINIDAE)
- jousseaumei, Mastoniaeforis jousseaumei (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- jousseaumei, Triphora jousseaumei R.P.J. Hervier, 1898 - syn of: Mastoniaeforis jousseaumei (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- jousseaumei, Trivia jousseaumei É.A.A. Locard, 1887 - syn of: Trivia monacha (da Costa, 1778) - (TRIVIIDAE)
- jousseaumei, Trivia jousseaumei É.A.A. Locard, 1886 - syn of: Trivia monacha (da Costa, 1778) - (TRIVIIDAE)
- jousseaumei, Lamysia jousseaumei (É. Lamy, 1920) - (UNGULINIDAE)
- jousseaumei grandis, Limopsis jousseaumei grandis A.W.B. Powell, 1960 - syn of: Limopsis marionensis Smith, 1885 - (LIMOPSIDAE)
- jousseaumi, Ceratosoma jousseaumi A. de Rochebrune, 1894 - syn of: Ceratosoma tenue F.D. Abraham, 1876 - (CHROMODORIDIDAE)
- jousseaumi, Rhiostoma jousseaumi J.J.M. de Morgan, 1885 - (CYCLOPHORIDAE)
- jousseaumi, Gibberula jousseaumi A. de Rochebrune, 1881 - syn of: Volvarina sauliae (G.B. II Sowerby, 1846) - (CYSTISCIDAE)
- jousseaumi, Haliotis jousseaumi J.F. Mabille, 1888 - syn of: Haliotis rugosa pustulata L.A. Reeve, 1846 - (HALIOTIDAE)
- jousseaumi, Limopsis jousseaumi (J.F. Mabille & A. de Rochebrune, 1889) - (LIMOPSIDAE)
- jousseaumi, Mactra jousseaumi A. de Rochebrune & J.F. Mabille, 1889 - syn of: Mulinia byronensis Gray, 1837 - (MACTRIDAE)
- jousseaumi, Marginella jousseaumi A. de Rochebrune, 1881 - syn of: Volvarina sauliae (G.B. II Sowerby, 1846) - (MARGINELLIDAE)
- jousseaumi, Marginella jousseaumi É.A.A. Locard, 1897 - syn of: Marginella subturrita P. Fischer, 1884 - (MARGINELLIDAE)
- jousseaumi, Nassa jousseaumi É.A.A. Locard, 1886 - syn of: Tritia incrassata (H. Strøm, 1768) - (NASSARIIDAE)
- jousseaumi, Unio jousseaumi J.R. Bourguignat, 1882 - syn of: Unio pictorum (C. Linnaeus, 1758) - (UNIONIDAE)
- Jousseaumia, Genus Jousseaumia A.G. Bourne, 1906 (MONTACUTIDAE)
- jousseaumia, Tropidophora tricarinata jousseaumia J.F. Mabille - (POMATIIDAE)
- jousseaumiana, Mitra jousseaumiana J.F. Mabille, 1898 - syn of: Strigatella tristis (W.J. Broderip, 1836) - (MITRIDAE)
- jousseaumiana, Pelecyora jousseaumiana (E. Fischer-Piette & D. Delmas, 1967) - (VENERIDAE)
- jousseaumianum, Pomatias jousseaumianum J.F. Mabille, 1886 - (POMATIIDAE)
- Jousseaumiella, syn of: Genus Jousseaumia A.G. Bourne, 1906 (MONTACUTIDAE)
- Jousseemea, Genus Jousseemea † (CAENOGASTROPODA (UNASSIGNED)) (FOSSIL)
- jovai, Heterocoptis jovai C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- jovankae, Pseudonerinea jovankae Ayoub-Hannaa & al., 2015 † - (CERITELLIDAE) (FOSSIL)
- Jovellania, Genus Jovellania Bayle, 1879 † (JOVELLANIIDAE) (FOSSIL)
- JOVELLANIIDAE Foord, 1888 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ONCOCERIDA [Order]) (FOSSIL)
- jovialis, Holopella jovialis J. Perner, 1903 † - (LOXONEMATIDAE) (FOSSIL)
- joviana, Rissoa joviana J.C. Melvill & R. Standen, 1896 - syn of: Finella pupoides A. Adams, 1860 - (RISSOIDAE)
- joviana, Finella joviana J.C. Melvill & R. Standen, 1896 - syn of: Finella pupoides A. Adams, 1860 - (SCALIOLIDAE)
- jovis, Mitromorpha jovis K.H.J. Thiele, 1925 - (MITROMORPHIDAE)
- jovis, Vittina jovis (C.A. Récluz, 1843) - (NERITIDAE)
- jovis, Nuculana jovis (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (NUCULANIDAE)
- jovis, Semele jovis (L.A. Reeve, 1853) - (SEMELIDAE)
- jovis, Amphidesma jovis L.A. Reeve, 1853 - syn of: Semele jovis (L.A. Reeve, 1853) - (SEMELIDAE)
- jovis, Trachybembix jovis (E.A.L. Kittl, 1894 †) - (STUORELLIDAE) (FOSSIL)
- Jovites, Genus Jovites Jovites † (TROPITIDAE) (FOSSIL)
- jovius, Endoplon jovius J.F. Mabille, 1887 - syn of: Halongella schlumbergeri (L.J. Morlet, 1886) - (PLECTOPYLIDAE)
- jowikolensis, Afrohyrioides jowikolensis (R.B. Newton, 1909 †) - (HYRIIDAE) (FOSSIL)
- jowikolensis, Unio jowikolensis Cox, 1955 † - (UNIONIDAE) (FOSSIL)
- jowikolensis, Unio jowikolensis R.B. Newton, 1909 † - syn of: Afrohyrioides jowikolensis (R.B. Newton, 1909 †) - (UNIONIDAE) (FOSSIL)
- joyae, Rictaxiella joyae G.T. Poppe, S.P. Tagaro & M. Chino, 2011 - (BULLINIDAE)
- joycea, Oliva joycea E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- joyceae, Lyncina joyceae (P.W. Clover, 1970) - (CYPRAEIDAE)
- joyceae, Oliva joyceae E.J. Petuch & D.M. Sargent, 1986 - syn of: Oliva joycea E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- joycei, Setobaudinia joycei F. Köhler, 2011 - (CAMAENIDAE)
- joyeuse, Parachondria joyeuse Watters, 2016 - (POMATIIDAE)
- jozinae, Coripia jozinae (J.J. Van Aartsen, 1985) - (CARDITIDAE)
- jozinae, Pteromeris jozinae J.J. Van Aartsen, 1985 - syn of: Coripia jozinae (J.J. Van Aartsen, 1985) - (CARDITIDAE)
- jozinae, Kelliopsis jozinae J.J. Van Aartsen & F. Carrozza, 1998 - (LASAEIDAE)
- jozinae, Aligena jozinae J.J. Van Aartsen & F. Carrozza, 1997 - syn of: Kelliopsis jozinae J.J. Van Aartsen & F. Carrozza, 1998 - (LASAEIDAE)
- jozinae, Turbonilla jozinae J.J. Van Aartsen & J.X. Corgan, 1996 - (PYRAMIDELLIDAE)
- Jponsia, Genus Jponsia Pacaud & Harzhauser, 2012 † (PACHYCHILIDAE) (FOSSIL)
- jpsmithi, Marathonites jpsmithi (Böse, 1919 †) - (ADRIANITIDAE) (FOSSIL)
- Jsowerbya, Genus Jsowerbya Merle, 2004 † (MURICIDAE) (FOSSIL)
- Juaboceras, Genus Juaboceras Flower, 1968 † (ENDOCERATIDAE) (FOSSIL)
- juan, Onchidella juan K. von Wissel, 1898 - syn of: Onchidella marginata (J.P.Y. Couthouy in A.A. Gould, 1852) - (ONCHIDIIDAE)
- juana, Bostryx juana (A. Cousin, 1887) - (BULIMULIDAE)
- juana, Thaumastus juana A. Cousin, 1887 - syn of: Bostryx juana (A. Cousin, 1887) - (MEGASPIRIDAE)
- juanadiazus, Bathytormus juanadiazus (C.J. Maury, 1920 †) - (CRASSATELLIDAE) (FOSSIL)
- juanae, Anticlimax juanae F. Rubio & E. Rolán, 2014 - (TORNIDAE)
- juancarlosi, Chelidonura juancarlosi J.A. Ortea & J. Espinosa, 1998 - (AGLAJIDAE)
- juancarlosi, Volvarina juancarlosi J. Espinosa, J.A. Ortea & Y.L. Diez, 2015 - (MARGINELLIDAE)
- Juanella, syn of: Genus Cadlina L.S.R. Bergh, 1878 (CADLINIDAE)
- juanensis, Homalopoma juanensis W.H. Dall, 1919 - syn of: Homalopoma luridum (W.H. Dall, 1885) - (COLLONIIDAE)
- juanensis, Parrasiella juanensis (Cantu-Chapa, 1968 †) - (HIMALAYITIDAE) (FOSSIL)
- Juanetia, syn of: Genus Jouannetia C. des Moulins, 1828 (PHOLADIDAE)
- juanfernandeziana, Tornatellina juanfernandeziana F.A.W. Miquel & J.F. Araya, 2015 - (ACHATINELLIDAE)
- juanfernandeziana, Onchidella juanfernandeziana K. von Wissel, 1898 - syn of: Onchidella marginata (J.P.Y. Couthouy in A.A. Gould, 1852) - (ONCHIDIIDAE)
- juangarciai, Volvarina juangarciai J. Espinosa & J.A. Ortea, 2013 - (MARGINELLIDAE)
- juangrinensis, Polystira juangrinensis Espinosa, Ortea & Moro, 2017 - (TURRIDAE)
- juanhorroi, Turbonilla juanhorroi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- juani, Chrysallis aspersa juani P. Bartsch, 1932 - (BRADYBAENIDAE)
- juani, Anachis juani J. Horro & E. Rolán, 2010 - (COLUMBELLIDAE)
- juani, Natica juani P.M.S. Costa & G. Pastorino, 2012 - (NATICIDAE)
- juani, Turbonilla juani P. Bartsch, 1917 - (PYRAMIDELLIDAE)
- juani, Helicoradomenia juani A.H. Scheltema & A.M. Kuzirian, 1991 - (SIMROTHIELLIDAE)
- juanica, Terebra juanica (W.H. Dall & C.T. Simpson, 1901) - (TEREBRIDAE)
- juanina, Boreoscala juanina (N.H. Odhner, 1922) - (EPITONIIDAE)
- juanina, Aplysiopsis juanina L.S.R. Bergh, 1898 - syn of: Aplysia parvula O.A.L. Mörch, 1863 - (HERMAEIDAE)
- juanitae, Epitonium juanitae E.F. Garcia, 2003 - (EPITONIIDAE)
- juanitae, Volvarina juanitae J. Espinosa, J.A. Ortea & L. Moro, 2013 - (MARGINELLIDAE)
- juanitae, Favartia juanitae (J. Gibson-Smith & W. Gibson-Smith, 1983) - (MURICIDAE)
- juanitae, Pygmaepterys juanitae (J. Gibson-Smith & W. Gibson-Smith, 1983) - syn of: Favartia juanitae (J. Gibson-Smith & W. Gibson-Smith, 1983) - (MURICIDAE)
- juanjoi, Volvarina juanjoi J. Espinosa & J.A. Ortea, 1998 - (MARGINELLIDAE)
- juanjosensii, Pseudosimnia juanjosensii (A.M. Pérez & B. Gómez, 1987) - (OVULIDAE)
- Juannularia, Subgenus Annularia (Juannularia) C. de la Torre & P. Bartsch, 1941 (POMATIIDAE)
- Juanocoptis, Subgenus Gongylostomella (Juanocoptis) M.L. Jaume & C. de la Torre, 1972 (UROCOPTIDAE)
- juansjoensii, Aperiovula juansjoensii A.M. Pérez & B. Gómez, 1987 - syn of: Pseudosimnia juanjosensii (A.M. Pérez & B. Gómez, 1987) - (OVULIDAE)
- juarazensis, Ashmunella juarazensis H.A. Pilsbry, 1948 - (POLYGYRIDAE)
- juarezi, Bulimulus juarezi L. Pfeiffer, 1866 - syn of: Rabdotus sufflatus A.A. Gould, 1859 - (BULIMULIDAE)
- juarezi, Limopsis juarezi W.H. Dall, 1908 - syn of: Limopsis panamensis W.H. Dall, 1902 - (LIMOPSIDAE)
- Jubaia, Genus Jubaia G. Mandahl-Barth, 1968 (BITHYNIIDAE)
- jubalensis, Spondylus jubalensis É. Lamy, 1938 - (SPONDYLIDAE)
- jubar, Crenocrassatella jubar (L.A. Reeve, 1842) - (CRASSATELLIDAE)
- jubar, Tellina jubar S.C.T. Hanley, 1844 - (TELLINIDAE)
- jubata, Ostrea jubata É. Lamy, 1929 - syn of: Ostrea denselamellosa C.E. Lischke, 1869 - (OSTREIDAE)
- jubata, Pterotrigonia jubata van Hoepen, 1929 † - (PTEROTRIGONIIDAE) (FOSSIL)
- jubata, Sportella jubata C. Hedley, 1909 - (SPORTELLIDAE)
- jubata, Turridrupa jubata (L.A. Reeve, 1843) - (TURRIDAE)
- jubatus, Pauleo jubatus S.V. Millen & J.C. Hamann, 1992 - (FACELINIDAE)
- jubens, Dryptus guerini jubens H.B. Preston, 1908 - (AMPHIBULIMIDAE)
- jubeus, Dryptus jubeus H.C. Fulton, 1908 - (AMPHIBULIMIDAE)
- jubilaea, Reishia jubilaea (S.K. Tan & J.B. Sigurdsson, 1990) - (MURICIDAE)
- jubilaea, Thaisella jubilaea S.K. Tan & J.B. Sigurdsson, 1990 - syn of: Reishia jubilaea (S.K. Tan & J.B. Sigurdsson, 1990) - (MURICIDAE)
- jucatanica, Ledella jucatanica Z.A. Filatova & A.A. Schileyko, 1984 - (NUCULANIDAE)
- jucunda, Acanthochitona jucunda (A. de Rochebrune, 1882) - (ACANTHOCHITONIDAE)
- jucunda, Auriculella uniplicata jucunda H.A. Pilsbry & C.M. Cooke, 1915 - (ACHATINELLIDAE)
- jucunda, Barskovia jucunda Bokova, 1990 † - (ALDANELLIDAE) (FOSSIL)
- jucunda, Macrochlamys jucunda L. Pfeiffer, 1863 - syn of: Everettia jucunda (L. Pfeiffer, 1863) - (ARIOPHANTIDAE)
- jucunda, Mericella jucunda (K.H.J. Thiele, 1925) - (CANCELLARIIDAE)
- jucunda, Kaliella jucunda A.R.J.B. Bavay & P. Dautzenberg, 1912 - (CHRONIDAE)
- jucunda, Collonista jucunda (K.H.J. Thiele, 1925) - (COLLONIIDAE)
- jucunda, Vexillum jucunda R.W. Dunker, 1879 - syn of: Vexillum taeniatum (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- jucunda, Japonia jucunda (E.A. Smith, 1894) - (CYCLOPHORIDAE)
- jucunda, Everettia jucunda (L. Pfeiffer, 1863) - (DYAKIIDAE)
- jucunda, Eulima jucunda K.H.J. Thiele, 1925 - (EULIMIDAE)
- jucunda, Polygona jucunda J.T.L. McGinty, 1940 - (FASCIOLARIIDAE)
- jucunda, Fusinella jucunda (K.H.J. Thiele, 1912) - (FASCIOLARIIDAE)
- jucunda, Erwinispira jucunda (Pan & Erwin, 2002 †) - (GONIASMATIDAE) (FOSSIL)
- jucunda, Peruvispira jucunda Pan & Erwin, 2002 † - syn of: Erwinispira jucunda (Pan & Erwin, 2002 †) - (GOSSELETINIDAE) (FOSSIL)
- jucunda, Troschelviana chrysochasma jucunda (J. Gundlach in L. Pfeiffer, 1863) - (HELICINIDAE)
- jucunda, Lyonsia jucunda E.A. Smith, 1896 - syn of: Allogramma elegans (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (LYONSIIDAE)
- jucunda, Marginella jucunda W.H. Turton, 1932 - syn of: Cystiscus jucundus (W.H. Turton, 1932) - (MARGINELLIDAE)
- jucunda, Mitra jucunda C.M. Tapparone-Canefri, 1874 - syn of: Strigatella pica (L.W. Dillwyn, 1817) - (MITRIDAE)
- jucunda, Vaughtia jucunda (K.H.J. Thiele, 1925) - (MURICIDAE)
- jucunda, Bullia jucunda W.H. Turton, 1932 - (NASSARIIDAE)
- jucunda, Nassa jucunda H.B. Preston, 1908 - syn of: Nassarius disparilis (E.A. Smith, 1903) - (NASSARIIDAE)
- jucunda, Acila jucunda (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (NUCULIDAE)
- jucunda, Daphnella jucunda K.H.J. Thiele, 1925 - (RAPHITOMIDAE)
- jucunda, Scissurella jucunda E.A. Smith, 1890 - (SCISSURELLIDAE)
- jucunda, Semele jucunda (L.A. Reeve, 1853) - (SEMELIDAE)
- jucunda, Obeliscus jucunda G.F. Angas, 1877 - syn of: Sayella fusca (Adams, 1839) - (SUBULINIDAE)
- jucunda, Constantia jucunda C.M. Tapparone-Canefri, 1874 - (VANIKORIDAE)
- jucunda, Dorisca jucunda (E.A. Smith, 1885) - (VENERIDAE)
- jucunda, Bellamya jucunda E.A. Smith, 1892 - (VIVIPARIDAE)
- jucundior, Everettia jucundior T.S. Liew, M. Schilthuizen & J.J. Vermeulen, 2009 - (DYAKIIDAE)
- jucundum, Caecum jucundum L. de Folin, 1867 - (CAECIDAE)
- jucundum, Calliostoma jucundum (A.A. Gould, 1849) - (CALLIOSTOMATIDAE)
- jucundum, Bittium jucundum G.P. Deshayes, 1864 † - (CERITHIIDAE) (FOSSIL)
- jucundum, Opisthostoma jucundum E.A. Smith, 1893 - (DIPLOMMATINIDAE)
- jucundum, Kopaninoeeras jucundum Barrande † - syn of: Michelinoceras grande (Meneghini †) - (GEISONOCERATIDAE) (FOSSIL)
- jucundum, Kopaninoceras jucundum (Barrande, 1870 †) - (ORTHOCERATIDAE) (FOSSIL)
- jucundum hermosanum, Calliostoma jucundum hermosanum W.H. Dall, 1927 - (CALLIOSTOMATIDAE)
- jucundum parva, Caecum jucundum parva L. de Folin, 1870 - syn of: Caecum jucundum L. de Folin, 1867 - (CAECIDAE)
- jucundus, Plekocheilus jucundus L. Pfeiffer, 1855 - (AMPHIBULIMIDAE)
- jucundus, Rhynchotrochus jucundus H.C. Fulton, 1896 - (CAMAENIDAE)
- jucundus, Purpuriconus jucundus (G.B. III Sowerby, 1887) - (CONIDAE)
- jucundus, Cystiscus jucundus (W.H. Turton, 1932) - (CYSTISCIDAE)
- jucundus, Eucyclus jucundus G.P. Deshayes, 1863 † - (EUCYCLIDAE) (FOSSIL)
- jucundus, Latirus jucundus J.T.L. McGinty, 1940 - syn of: Polygona jucunda J.T.L. McGinty, 1940 - (FASCIOLARIIDAE)
- jucundus, Gemixystus jucundus (G.P. Deshayes, 1865 †) - (MURICIDAE) (FOSSIL)
- jucundus, Nassarius jucundus H.B. Preston, 1908 - syn of: Nassarius disparilis (E.A. Smith, 1903) - (NASSARIIDAE)
- jucundus, Clanculus jucundus A.A. Gould, 1861 - (TROCHIDAE)
- jucundus, Trochus jucundus G.B. Sowerby, 1878 non A.A. Gould, 1849 - syn of: Tristichotrochus haliarchus (J.C. Melvill, 1889) - (TROCHIDAE)
- jucundus stanfieldi, Conus jucundus stanfieldi E.J. Petuch, 1998 - syn of: Purpuriconus stanfieldi (E.J. Petuch, 1998) - (CONIDAE)
- judae, Dumitricaceras judae Guex & al., 2005 † - (DANUBITIDAE) (FOSSIL)
- judae, Ellobium judae C. Linnaeus, 1758 - syn of: Ellobium aurisjudae (C. Linnaeus, 1758) - (ELLOBIIDAE)
- judaeorum, Costellaria judaeorum W.L.H. Dohrn, 1861 - syn of: Vexillum leucozonias (G.P. Deshayes in E.S.J.L. de Laborde & M. Linant, 1834) - (COSTELLARIIDAE)
- judaeus, Conus judaeus L.S.R. Bergh, 1895 - syn of: Virroconus ebraeus (C. Linnaeus, 1758) - (CONIDAE)
- judaica, Callistina judaica (Blanckenhorn, 1934 †) - (VENERIDAE) (FOSSIL)
- judasense, Liguus fasciatus judasense M.L. Jaume, 1950 - (ORTHALICIDAE)
- judasense, Opisthosiphon judasense C. de la Torre & J. Henderson, 1920 - (POMATIIDAE)
- juddi, Pisinna juddi (W.F. Ponder, 1968) - (ANABATHRIDAE)
- juddi, Haumea juddi W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Haumea loxoides (G.B. III Sowerby, 1882) - (PECTINIDAE)
- Juddiceras, Genus Juddiceras Spath, 1924 † (PROTANCYLOCERATIDAE) (FOSSIL)
- juddii, Neocardioceras juddii Barrois & J. De Guerne, 1898 † - (ACANTHOCERATIDAE) (FOSSIL)
- juddii, Achatinella juddii D.D. Baldwin, 1895 - (ACHATINELLIDAE)
- juddii, Amastra juddii C.M. Cooke, 1917 - (AMASTRIDAE)
- juddii, Orobophana juddii H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- juddii barroisi, Neocardioceras juddii barroisi Wright & J. Kennedy, 1981 † - (ACANTHOCERATIDAE) (FOSSIL)
- judeae, Chicoreus judeae E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- judensis, Marsupina judensis A.G. Beu, 2010 † - (BURSIDAE) (FOSSIL)
- judiae, Cerithioides judiae Rollins, 1975 † - (GONIASMATIDAE) (FOSSIL)
- Judicarites, Genus Judicarites Mojsisovics , 1896 † (DANUBITIDAE) (FOSSIL)
- judithae, Liocerithium judithae A.M. Keen, 1971 - (CERITHIIDAE)
- judithae, Cerithiopsis judithae A. Reitano & G. Buzzurro, 2006 - syn of: Cerithiopsis iudithae A. Reitano & G. Buzzurro, 2006 - (CERITHIOPSIDAE)
- judithae, Naticopsis judithae Knight, 1933 † - (DELPHINULOPSIDAE) (FOSSIL)
- judithae, Mesoginella judithae (R.K. Dell, 1956) - (MARGINELLIDAE)
- judithae, Favartia judithae D'Attilio & H.W. Bertsch, 1980 - (MURICIDAE)
- judithae, Miralda judithae G.W. Nowell-Usticke, 1959 - syn of: Pseudoscilla babylonia (C.B. Adams, 1845) - (PYRAMIDELLIDAE)
- judithae, Gymnobela judithae A.H. Clarke, 1989 - syn of: Mioawateria extensa (W.H. Dall, 1881) - (RAPHITOMIDAE)
- judithae, Elliptio judithae A.H. Clarke, 1986 - (UNIONIDAE)
- judomensis, Aphanaia judomensis Astafieva, 1993 † - (ATOMODESMATIDAE) (FOSSIL)
- judsoni, Polinices judsoni (C.J. Maury, 1910 †) - (NATICIDAE) (FOSSIL)
- juferevi, Bulunites juferevi Andrianov, 1985 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- Juga, Genus Juga H. Adams & A. Adams, 1854 (SEMISULCOSPIRIDAE)
- jugalis, Oreohelix jugalis (H. Hemphill, 1890) - (OREOHELICIDAE)
- jugata, Bucaniella jugata E.F.R.K. Koken, 1896 † - syn of: Tetranota jugata (E.F.R.K. Koken, 1896 †) - (BELLEROPHONTIDAE) (FOSSIL)
- jugata, Bucanella jugata F.B. Meek 1871 † - (BUCANELLIDAE) (FOSSIL)
- jugata, Tetranota jugata (E.F.R.K. Koken, 1896 †) - (PLECTONOTIDAE) (FOSSIL)
- jugata, Tironucula jugata Morris & Fortey, 1976 † - (PRAENUCULIDAE) (FOSSIL)
- jugatonodosus, Germanonautilus jugatonodosus (Zimmermann †) - (TAINOCERATIDAE) (FOSSIL)
- jugatoria, Sinicola jugatoria (C.M.F. Ancey, 1885) - (PLECTOPYLIDAE)
- jugatus, Scanochiton jugatus J.R.M. Bergenhayn, 1943 † - (SCANOCHITONIDAE) (FOSSIL)
- jugicosta, Melanoides jugicosta (S.C.T. Hanley & W. Theobald, 1876) - (THIARIDAE)
- jugicostis, Melanoides jugicostis (S.C.T. Hanley & W. Theobald, 1876) - (THIARIDAE)
- jugifera, Neilo jugifera J. Marwick, 1965 † - (MALLETIIDAE) (FOSSIL)
- jugifera, Sonninia jugifera (L. Waagen, 1867 †) - (SONNINIIDAE) (FOSSIL)
- juglandula, Limea juglandula (J.C. Melvill & R. Standen, 1907) - (LIMIDAE)
- juglans, Helicostyla juglans L. Pfeiffer, 1842 - (BRADYBAENIDAE)
- juglans, Helicella juglans E. Gittenberger, 1991 - (HYGROMIIDAE)
- jugleri, Bathytoma cataphracta jugleri (R.A. Philippi, 1847 †) - (BORSONIIDAE) (FOSSIL)
- Jugleri, Goniatites Jugleri F.A. Roemer, 1843 † - syn of: Pinacites jugleri (F.A. Roemer, 1843 †) - (GONIATITIDAE) (FOSSIL)
- jugleri, Pinacites jugleri (F.A. Roemer, 1843 †) - (PINACITIDAE) (FOSSIL)
- Jugonia, syn of: Genus Ctena O.A.L. Mörch, 1860 (LUCINIDAE)
- jugosa, Hesperisternia jugosa (C.B. Adams, 1852) - (BUCCINIDAE)
- jugosa, Carinastele jugosa B.A. Marshall, 1988 - (CALLIOSTOMATIDAE)
- jugosa, Dahlakia jugosa H.E.J. Biggs, 1971 - syn of: Bittium proteum (F.P. Jousseaume, 1931) - (CERITHIIDAE)
- jugosa, Cuspidaria jugosa (W. Wood, 1857) - (CUSPIDARIIDAE)
- jugosa, Cuspidaria jugosa G.O. Sars, 1878 - syn of: Cuspidaria lamellosa (G.O. Sars, 1878) - (CUSPIDARIIDAE)
- jugosa, Cookeconcha jugosa (J.W. Mighels, 1845) - (ENDODONTIDAE)
- jugosa, Helix jugosa J.W. Mighels, 1845 - syn of: Cookeconcha jugosa (J.W. Mighels, 1845) - (HELICIDAE)
- jugosa, Lucina jugosa E. Forbes, 1846 - (LUCINIDAE)
- jugosa, Cyclopilsbrya jugosa (C.B. Adams, 1850) - (MEGALOMASTOMIDAE)
- jugosa, Poteria jugosa C.B. Adams, 1850 - syn of: Cyclopilsbrya jugosa (C.B. Adams, 1850) - (NEOCYCLOTIDAE)
- jugosa, Haugia jugosa (J. de C. Sowerby, 1815 †) - (PHYMATOCERATIDAE) (FOSSIL)
- jugosa, Tellina jugosa T. Brown, 1818 - syn of: Gastrana fragilis (C. Linnaeus, 1758) - (TELLINIDAE)
- jugosa, Harpeola jugosa (Sowerby, 1839 †) - (VOLUTIDAE) (FOSSIL)
- jugoslavica, Oxychilus jugoslavica (J. Urbanski, 1939) - (OXYCHILIDAE)
- jugosum, Phanerotrema jugosum (Huxley & Etheridge, 1865 †) - (PHANEROTREMATIDAE) (FOSSIL)
- jugosus, Chiton jugosus (A.A. Gould, 1846) - (CHITONIDAE)
- jugosus, Rhyssoplax jugosus A.A. Gould, 1846 - syn of: Chiton jugosus (A.A. Gould, 1846) - (CHITONIDAE)
- jugosus, Littorina jugosus G. Montagu, 1803 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (LITTORINIDAE)
- jugosus, Turbo jugosus G. Montagu, 1803 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (TURBINIDAE)
- Jugosus, syn of: Genus Alasmidonta T. Say, 1818 (UNIONIDAE)
- jugosus parva, Cyclotus jugosus parva E. Chitty, 1857 - syn of: Cyclopilsbrya jugosa (C.B. Adams, 1850) - (CYCLOPHORIDAE)
- jugotenuis, Acanthochitona jugotenuis P. Kaas, 1979 - (ACANTHOCHITONIDAE)
- jugularis, Pseudalinda jugularis (W. von Vest, 1859) - (CLAUSILIIDAE)
- jugularis, Lymnaea stagnalis jugularis T. Say, 1817 - (LYMNAEIDAE)
- jugulata, Troschelviana jugulata (F. Poey, 1858) - (HELICINIDAE)
- juhlei, Skirroceras juhlei Imlay, 1964 † - (STEPHANOCERATIDAE) (FOSSIL)
- juigneti, Lamnayella juigneti (Wright & J. Kennedy, 1978 †) - (LYELLICERATIDAE) (FOSSIL)
- juilleti, Otala juilleti (A. Terver, 1839) - (HELICIDAE)
- jujubiniformis, Trochus jujubiniformis Martin, 1884 † - (TROCHIDAE) (FOSSIL)
- jujubinum, Calliostoma jujubinum (J.F. Gmelin, 1791) - (CALLIOSTOMATIDAE)
- jujubinum rawsoni, Astele jujubinum rawsoni W.H. Dall, 1889 - syn of: Calliostoma jujubinum (J.F. Gmelin, 1791) - (CALLIOSTOMATIDAE)
- jujubinum tampaense, Calliostoma jujubinum tampaense (T.A. Conrad, 1846) - syn of: Calliostoma tampaense (T.A. Conrad, 1846) - (CALLIOSTOMATIDAE)
- Jujubinus, Genus Jujubinus T.A. de M. Monterosato, 1884 (TROCHIDAE)
- jujubinus, Trochus jujubinus J.F. Gmelin, 1791 - syn of: Calliostoma jujubinum (J.F. Gmelin, 1791) - (TROCHIDAE)
- jujuconulum, Calliostoma jujuconulum A.A. Olsson & A. Harbison, 1953 † - (CALLIOSTOMATIDAE) (FOSSIL)
- jujuyensis, Bulimulus jujuyensis E.L. Holmberg, 1909 - (BULIMULIDAE)
- jujuyensis, Epiphragmophora jujuyensis P.H. Scott, 1962 - (EPIPHRAGMOPHORIDAE)
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