- ruhrensis, Deikella ruhrensis S. Kiel & K. Bandel, 2004 † - (TURBINIDAE) (FOSSIL)
- ruida, Drepanocheilus ruida White, 1876 † - (APORRHAIDAE) (FOSSIL)
- ruida, Parakaliella ruida (H.A. Pilsbry, 1901) - (HELICARIONIDAE)
- ruida, Candidula ruida J.R. Bourguignat in É.A.A. Locard, 1883 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- ruidium, Drepanocheilus ruidium White, 1876 † - (APORRHAIDAE) (FOSSIL)
- ruidocostata, Uncinaspira ruidocostata He, 1984 † - syn of: Oelandiella korobkovi (Vostokova, 1962 †) - (COREOSPIRIDAE) (FOSSIL)
- ruidosensis, Gastrocopta ruidosensis T.D.A. Cockerell, 1899 - (GASTROCOPTIDAE)
- ruidum, Dorsanum ruidum M.A. Peyrot, 1924 † - (NASSARIIDAE) (FOSSIL)
- ruidus, Paraceratoconus ruidus W.C. Zhou & Q. Xiao, 1984 † - (HYPSELOCONIDAE) (FOSSIL)
- ruinosa, Pyrgulopsis ruinosa R. Hershler, 1998 - (HYDROBIIDAE)
- ruivensis, Madeirovitrina ruivensis (A.A. Gould, 1847) - (VITRINIDAE)
- ruivensis, Madeirovitrina ruivensis T.V. Wollaston, 1878 - syn of: Madeirovitrina crassus (K. Groh & J. Hemmen, 1996) - (VITRINIDAE)
- ruivensis, Madeirovitrina ruivensis Auct. non A.A. Gould, 1841 - syn of: Madeirovitrina behnii (R.T. Lowe, 1851) - (VITRINIDAE)
- ruivensis, Madeirovitrina ruivensis J.A. Albers, 1854 - syn of: Madeirovitrina crassus (K. Groh & J. Hemmen, 1996) - (VITRINIDAE)
- ruivensis, Madeirovitrina ruivensis H.R. Simroth, 1890 - syn of: Madeirovitrina albopalliata (K. Groh & J. Hemmen, 1996) - (VITRINIDAE)
- ruizana, Limopsis ruizana H.A. Rehder, 1971 - (LIMOPSIDAE)
- ruizi, Veracruciceras ruizi Cantu-Chapa, 2006 † - (SIMOCERATIDAE) (FOSSIL)
- rukhini, Prilukiella rukhini Plotnikov, 1945 † - (PRILUKIELLIDAE) (FOSSIL)
- ruklensis, Aviculopecten ruklensis Reed, 1944 † - (AVICULOPECTINIDAE) (FOSSIL)
- rukuzenensis, Tectonatica rukuzenensis R. Tiba, 1985 - (NATICIDAE)
- rulleaui, Harpoceras rulleaui Bécaud, 2006 † - (HILDOCERATIDAE) (FOSSIL)
- RumaChemnitz, syn of: Genus Mammilla H.C.F. Schumacher, 1817 (NATICIDAE)
- rumaenicus, Viviparus rumaenicus W. Kobelt, 1909 - syn of: Viviparus acerosus J.R. Bourguignat, 1862 - (VIVIPARIDAE)
- rumala, Clymenia rumala Ruan, 1981 † - (CLYMENIIDAE) (FOSSIL)
- rumana, Emmericia rumana J.R. Tournouër, 1880 † - syn of: Choerina rumana (J.R. Tournouër, 1880 †) - (AMNICOLIDAE) (FOSSIL)
- rumana, Micromelania rumana Papaianopol & Macale?, 2004 † - (HYDROBIIDAE) (FOSSIL)
- rumana, Melanopsis rumana J.R. Tournouër, 1880 † - (MELANOPSIDAE) (FOSSIL)
- rumana, Choerina rumana (J.R. Tournouër, 1880 †) - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- rumana correcta, Melanopsis rumana correcta Stefanescu, 1896 † - syn of: Melanopsis correcta Stefanescu, 1896 † - (MELANOPSIDAE) (FOSSIL)
- rumaniana, Pseudamnicola rumaniana Pana, 2003 † - (HYDROBIIDAE) (FOSSIL)
- rumanica, Anodonta rumanica J.R. Bourguignat, 1881 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- rumanus, Lithoglyphus rumanus Stefanescu, 1896 † - (LITHOGLYPHIDAE) (FOSSIL)
- rumanus, Theodoxus rumanus Stefanescu, 1896 † - syn of: Theodoxus stefanescui (C.F. Fontannes, 1887 †) - (NERITIDAE) (FOSSIL)
- rumanus, Gyraulus rumanus W.A. Wenz in Krejci-Graf & W.A. Wenz, 1932 - (PLANORBIDAE)
- rumanus, Viviparus rumanus (J.R. Tournouër, 1879 †) - (VIVIPARIDAE) (FOSSIL)
- rumballi, Austrocypraea rumballi D. Fehse, 2003 † - (CYPRAEIDAE) (FOSSIL)
- rumbangensis, Sitala rumbangensis E.A. Smith, 1895 - syn of: Kaliella rumbangensis (E.A. Smith, 1895) - (ARIOPHANTIDAE)
- rumbangensis, Kaliella rumbangensis (E.A. Smith, 1895) - (CHRONIDAE)
- rumeaui, Paravascoceras rumeaui M. Collignon, 1957 † - syn of: Paravascoceras cauvini (Chudeau, 1909 †) - (VASCOCERATIDAE) (FOSSIL)
- rumeliana, Vitta rumeliana M. Harzhauser, O. Mandic & al., 2016 † - (NERITIDAE) (FOSSIL)
- rumelica, Agardhiella macrodonta rumelica (P. Hesse, 1916) - (ARGNIDAE)
- rumelica, Bithynia rumelica O. Wohlberedt, 1911 - syn of: Bithynia leachii (R. Sheppard, 1823) - (BITHYNIIDAE)
- rumelica, Helicigona rumelica (E.A. Rossmässler, 1838) - (HELICIDAE)
- rumelica, Helix rumelica E.A. Rossmässler, 1838 - syn of: Campylaea trizona rumelica (E.A. Rossmässler, 1838) - (HELICIDAE)
- rumelica, Campylaea trizona rumelica (E.A. Rossmässler, 1838) - (HELICIDAE)
- rumelica balcanica, Helicigona rumelica balcanica W. Kobelt - (HELICIDAE)
- rumelicus, Aporrhais rumelicus (F. Toula, 1892 †) - (APORRHAIDAE) (FOSSIL)
- rumelicus, Longiphallus deilus rumelicus (P. Hesse, 1913) - (OXYCHILIDAE)
- Rumella, Genus Rumella J.R. Bourguignat, 1885 (PALUDOMIDAE)
- Rumerloella, Genus Rumerloella Bandel, 1993 (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- rumia, Cadlina rumia Er. Marcus, 1955 - (CADLINIDAE)
- rumichangensis, Petraeomastus rumichangensis H.A. Pilsbry, 1934 - (ENIDAE)
- Rumina, Genus Rumina A. Risso, 1826 (SUBULINIDAE)
- ruminatus, Doliutus ruminatus Meshkova, 1974 † - (ALLATHECIDAE) (FOSSIL)
- ruminiformis, Liparophaedusa ruminiformis (J.F. Mabille, 1887) - (CLAUSILIIDAE)
- rumoensis, Kaneharaia rumoensis K. Amano, 1983 † - (VENERIDAE) (FOSSIL)
- rumpfi, Bucania rumpfi E.A.L. Kittl, 1891 † - (BUCANIIDAE) (FOSSIL)
- rumpfii, Cassis rumpfii J.F. Gmelin, 1791 - syn of: Cassis tessellata (J.F. Gmelin, 1791) - (CASSIDAE)
- rumphi, Oliva vidua rumphi P. Dautzenberg, 1927 - (OLIVIDAE)
- rumphiana, Quadrula rumphiana I. Lea, 1852 - (UNIONIDAE)
- rumphii, Dolabella rumphii H.M.D. de Blainville, 1819 - syn of: Dolabella auricularia (J. Lightfoot, 1786) - (APLYSIIDAE)
- rumphii, Buccinum rumphii G.P. Deshayes, 1844 - syn of: Nassarius arcularia plicatus (P.F. Röding, 1798) - (BUCCINIDAE)
- rumphii, Luria isabella rumphii F.A. Schilder & M. Schilder, 1938 - (CYPRAEIDAE)
- rumphii, Dyakia rumphii (G. von dem Busch, 1842) - (DYAKIIDAE)
- rumphii, Modiolus rumphii (R.A. Philippi, 1847) - (MYTILIDAE)
- rumphii, Cellana rumphii H.M.D. de Blainville, 1825 - syn of: Cellana testudinaria (C. Linnaeus, 1758) - (NACELLIDAE)
- rumphii, Nassa rumphii J.B. Hombron & C.H. Jacquinot, 1838 - syn of: Nassarius arcularia plicatus (P.F. Röding, 1798) - (NASSARIIDAE)
- rumphii, Nerita rumphii C.A. Récluz, 1841 - syn of: Nerita litterata J.F. Gmelin, 1791 - (NERITIDAE)
- rumphii, Entemnotrochus rumphii (M.M. Schepman, 1879) - (PLEUROTOMARIIDAE)
- rumphii, Pleurotomaria rumphii M.M. Schepman, 1879 - syn of: Entemnotrochus rumphii (M.M. Schepman, 1879) - (PLEUROTOMARIIDAE)
- rumphii, Lioconcha rumphii S.E.T. Van der Meij, R.G. Moolenbeek & H. Dekker, 2010 - (VENERIDAE)
- rumphii, Vermetus rumphii H.M.D. de Blainville, 1828 - (VERMETIDAE)
- rumphii kushimotoensis, Entemnotrochus rumphii kushimotoensis M. Tomida & Sako, 2016 † - (PLEUROTOMARIIDAE) (FOSSIL)
- rumphiusi, Morula rumphiusi R. Houart, 1996 - (MURICIDAE)
- Rumptunucula, Subgenus Nucula (Rumptunucula) W. Bergmans, 1978 (NUCULIDAE)
- rumrutiensis, Afroguppya rumrutiensis (H.B. Preston, 1911) - (EUCONULIDAE)
- rumrutiensis, Guppya rumrutiensis H.B. Preston, 1911 - syn of: Afroguppya rumrutiensis (H.B. Preston, 1911) - (EUCONULIDAE)
- rumrutiensis, Thapsia rumrutiensis H.B. Preston, 1911 - syn of: Afroguppya rumrutiensis (H.B. Preston, 1911) - (UROCYCLIDAE)
- rumseyensis, Nowakites rumseyensis Anderson, 1958 † - (PACHYDISCIDAE) (FOSSIL)
- runchaena, Massyla runchaena J. Gardner, 1937 † - (CANCELLARIIDAE) (FOSSIL)
- Runcina, Genus Runcina E. Forbes & S.C.T. Hanley, 1851 (RUNCINIDAE)
- runcinata, Margarella runcinata J. Marwick, 1928 † - (CALLIOSTOMATIDAE) (FOSSIL)
- runcinata, Glossodoris runcinata L.S.R. Bergh, 1877 - syn of: Hypselodoris infucata (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (CHROMODORIDIDAE)
- runcinata, Splendrillia runcinata R.K. Dell, 1956 - (DRILLIIDAE)
- runcinata, Fluxinella runcinata B.A. Marshall, 1991 - (SEGUENZIIDAE)
- runcinata, Colpospira runcinata (R.B. Watson, 1881) - (TURRITELLIDAE)
- runcinata, Turritella runcinata R.B. Watson, 1881 - syn of: Colpospira runcinata (R.B. Watson, 1881) - (TURRITELLIDAE)
- Runcinella, Genus Runcinella N.H. Odhner, 1924 (RUNCINIDAE)
- Runcinida, Genus Runcinida R.F. Burn, 1963 (RUNCINIDAE)
- RUNCINIDAE H. & A. Adams, 1854 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-CEPHALASPIDEA [Order]-RUNCINOIDEA [Superfamily])
- runctoni, Runctonia runctoni T.L. Casey, 1973 † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Runctonia, Subgenus Praetollia (Runctonia) Casey, 1973 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- runga, Climocella runga J.F. Goulstone, 1997 - (CHAROPIDAE)
- runnegari, Scissuradentalium runnegari E.K. Yoo, 1988 † - (LAEVIDENTALIIDAE) (FOSSIL)
- runnegari, Astartila runnegari C.O. Waterhouse, 1988 † - (MEGADESMIDAE) (FOSSIL)
- runnegari, Pojetaia runnegari Jell, 1980 † - (NUCULIDA (UNASSIGNED)) (FOSSIL)
- runnegari, Ribeiria runnegari Pojeta & al., 1977 † - (RIBEIRIIDAE) (FOSSIL)
- Runnegaria, Genus Runnegaria Pojeta & Gilbert-Tomlinson, 1977 (MODIOLOPSIDAE) (FOSSIL)
- Runnegariella, Genus Runnegariella Simoes & al., 1995 (MEGADESMIDAE) (FOSSIL)
- Runnica, syn of: Genus Runcina E. Forbes & S.C.T. Hanley, 1851 (RUNCINIDAE)
- runsoranum, Haplonepion runsoranum (E.C. Von Martens, 1892) - (STREPTAXIDAE)
- runtoniana, Tanousia runtoniana (C.L.F. von Sandberger, 1880 †) - (HYDROBIIDAE) (FOSSIL)
- runutjirbana, Semotrachia runutjirbana G.A. Solem, 1993 - (CAMAENIDAE)
- Rupacilla, Subgenus Paludinella (Rupacilla) K.H.J. Thiele, 1927 (ASSIMINEIDAE)
- rupecula, Eustreptostyla rupecula F.G. Thompson, 2009 - (SPIRAXIDAE)
- rupeliana, Tectonatica rupeliana E. Robba, Pedriali & E. Quaggiotto, 2016 † - (NATICIDAE) (FOSSIL)
- rupeliensis, Alvania rupeliensis M.L Tembrock, 1964 † - (RISSOIDAE) (FOSSIL)
- rupella, Perna rupella H. Dufo, 1840 - syn of: Isognomon nucleus (J.B.P.A. Lamarck, 1819) - (MYTILIDAE)
- rupella, Isognomon rupella H. Dufo, 1840 - syn of: Isognomon nucleus (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- rupellaria, Sepia rupellaria A.E.J. Férussac & D'Orbigny, 1835 - syn of: Sepia elegans H.M.D. de Blainville, 1827 - (SEPIIDAE)
- Rupellaria, Genus Rupellaria L.B. Fleuriau de Bellevue, 1802 (VENERIDAE)
- Rupellarigenus, syn of: Genus Petricola J.B.P.A. Lamarck, 1801 (VENERIDAE)
- rupellensis, Harpagodes rupellensis (A.V.M.D. D'Orbigny, 1850 †) - (HARPAGODIDAE) (FOSSIL)
- rupellensis, Phyllocheilus rupellensis (A.V.M.D. D'Orbigny, 1850 †) - (HARPAGODIDAE) (FOSSIL)
- rupellensis, Pterocera rupellensis A.V.M.D. D'Orbigny, 1850 † - syn of: Phyllocheilus rupellensis (A.V.M.D. D'Orbigny, 1850 †) - (STROMBIDAE) (FOSSIL)
- rupelliana, Mya rupelliana (L.A. Reeve, 1857) - syn of: Mya ruppelliana (L.A. Reeve, 1857) - (MYIDAE)
- ruperella, Plicatula ruperella F. Dujardin, 1837 † - (PLICATULIDAE) (FOSSIL)
- ruperella, Petricola ruperella J.B.P.A. Lamarck, 1818 - syn of: Petricola lithophaga (A. Retzius, 1788) - (VENERIDAE)
- Ruperella, syn of: Genus Petricola J.B.P.A. Lamarck, 1801 (VENERIDAE)
- Rupertomenia, syn of: Genus Micromenia E.H.J. Leloup, 1948 (DONDERSIIDAE)
- rupestre, Cerithium rupestre A. Risso, 1826 - syn of: Cerithium vulgatum J.G. Bruguière, 1792 - (CERITHIIDAE)
- rupestre, Cerithium rupestre T.A. de M. Monterosato, 1884 - syn of: Cerithium lividulum A. Risso, 1826 - (CERITHIIDAE)
- rupestre, Hypselostoma rupestre W.S.S. Van Benthem-Jutting, 1962 - (HYPSELOSTOMATIDAE)
- rupestre, Eunema rupestre K.E.I. von Eichwald, 1856 † - syn of: Cyclonema rupestre (K.E.I. von Eichwald, 1856 †) - (LOPHOSPIRIDAE) (FOSSIL)
- rupestre, Cyclonema rupestre (K.E.I. von Eichwald, 1856 †) - (PLATYCERATIDAE) (FOSSIL)
- rupestre minor, Cerithium rupestre minor M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Cerithium lividulum A. Risso, 1826 - (CERITHIIDAE)
- rupestre plicata, Cerithium rupestre plicata M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Cerithium lividulum A. Risso, 1826 - (CERITHIIDAE)
- rupestre sulcifera, Eunema rupestre sulcifera K.E.I. von Eichwald, 1840 † - syn of: Cyclonema rupestre sulcifera (K.E.I. von Eichwald, 1840 †) - (LOPHOSPIRIDAE) (FOSSIL)
- rupestre sulcifera, Cyclonema rupestre sulcifera (K.E.I. von Eichwald, 1840 †) - (PLATYCERATIDAE) (FOSSIL)
- Rupestrella, Subgenus Granopupa (Rupestrella) T.A. de M. Monterosato, 1894 (CHONDRINIDAE)
- rupestris, Kora rupestris R.B. Salvador & L.R.L. Simone, 2016 - (BULIMULIDAE)
- rupestris, Fibula rupestris (C.F. Parona, 1895 †) - (CERITELLIDAE) (FOSSIL)
- rupestris, Rupestrella rupestris (R.A. Philippi, 1838) - (CHONDRINIDAE)
- rupestris, Clausilia rupestris J.R. Bourguignat, 1877 - syn of: Clausilia bidentata abietina (D. Dupuy, 1850) - (CLAUSILIIDAE)
- rupestris, Strumosa strumosa rupestris (E.A. Rossmässler, 1856) - (CLAUSILIIDAE)
- rupestris, Pterocyclos rupestris (W.H. Benson, 1832 †) - (CYCLOPHORIDAE) (FOSSIL)
- rupestris, Pterocyclus rupestris W.H. Benson, 1832 † - syn of: Pterocyclos rupestris (W.H. Benson, 1832 †) - (CYCLOPHORIDAE) (FOSSIL)
- rupestris, Peristoma rupestris I. Krynicki, 1833 - (ENIDAE)
- rupestris, Paraliospira rupestris (E.F.R.K. Koken & J. Perner, 1925 †) - (EOTOMARIIDAE) (FOSSIL)
- rupestris, Fistularia rupestris L.A.G. d'A. Bosc, 1801 - syn of: Lamychaena hians (J.F. Gmelin, 1791) - (GASTROCHAENIDAE)
- rupestris, Ambites rupestris L. Waagen, 1895 † - (GYRONITIDAE) (FOSSIL)
- rupestris, Helix rupestris J.P.R. Draparnaud, 1801 - syn of: Pyramidula rupestris (J.P.R. Draparnaud, 1801) - (HELICIDAE)
- rupestris, Troschelviana rupestris (L. Pfeiffer, 1839) - (HELICINIDAE)
- rupestris, Leiostyla rupestris R.T. Lowe, 1855 - syn of: Leiostyla sphinctostoma (R.T. Lowe, 1831) - (LAURIIDAE)
- rupestris, Lymnaea rupestris W.L. Paraense, 1982 - (LYMNAEIDAE)
- rupestris, Purpura rupestris A. Valenciennes, 1846 - syn of: Haustrum lacunosum (J.G. Bruguière, 1789) - (MURICIDAE)
- rupestris, Tudora rupestris H.B. Baker, 1924 - syn of: Tudora rupis H.B. Baker, 1924 - (POMATIIDAE)
- rupestris, Pyramidula rupestris (J.P.R. Draparnaud, 1801) - (PYRAMIDULIDAE)
- rupestris, Rissoa rupestris E. Forbes, 1840 - syn of: Cingula trifasciata rupestris (E. Forbes, 1840) - (RISSOIDAE)
- rupestris, Cingula trifasciata rupestris (E. Forbes, 1840) - (RISSOIDAE)
- rupestris, Trochus rupestris Hudleston † - (TROCHIDAE) (FOSSIL)
- rupestris, Gibbula rupestris A. Risso, 1826 - syn of: Clanculus cruciatus (C. Linnaeus, 1758) - (TROCHIDAE)
- rupestris, Mysia rupestris (G.B. Brocchi, 1814 †) - (VENERIDAE) (FOSSIL)
- rupestris, Vermetus rupestris A. Risso, 1826 - syn of: Vermetus triquetrus Ant. Bivona-Bernardi, 1832 - (VERMETIDAE)
- rupestris, Fulgoraria rupestris (J.F. Gmelin, 1791) - (VOLUTIDAE)
- rupestris aurantia, Fulgoraria rupestris aurantia T. Shikama & S. Kosuge, 1970 - (VOLUTIDAE)
- rupestris carolae, Rupestrella rupestris carolae J. Beckmann, 2002 - (CHONDRINIDAE)
- rupestris coloba, Rupestrella rupestris coloba (H.A. Pilsbry, 1891) - (CHONDRINIDAE)
- rupestris conoidea, Pyramidula rupestris conoidea (J.R. Bourguignat, 1880) - (PYRAMIDULIDAE)
- rupestris lamellosa, Rupestrella rupestris lamellosa J. Beckmann, 2002 - (CHONDRINIDAE)
- rupestris margritae, Rupestrella rupestris margritae J. Beckmann, 2002 - (CHONDRINIDAE)
- rupestris politohumerosa, Fulgoraria rupestris politohumerosa T. Shikama, 1968 - (VOLUTIDAE)
- rupestris scalaris, Rupestrella rupestris scalaris (L. Benoit, 1858) - (CHONDRINIDAE)
- rupestris thachi, Fulgoraria rupestris thachi P. Bail & M. Chino, 2010 - (VOLUTIDAE)
- rupestris trochoides, Helix rupestris trochoides A. Moquin-Tandon, 1855 - syn of: Pyramidula rupestris (J.P.R. Draparnaud, 1801) - (HELICIDAE)
- Rupicella, syn of: Genus Thracia W.E. Leach in H.M.D. De Blainville, 1824 (THRACIIDAE)
- Rupicilla, syn of: Genus Thracia W.E. Leach in H.M.D. De Blainville, 1824 (THRACIIDAE)
- rupicola, Mentissoidea rupicola (L.L.G. de Mortillet, 1854) - (CLAUSILIIDAE)
- Rupicola, syn of: Genus Graciliaria E.A. Bielz, 1867 (CLAUSILIIDAE)
- rupicola, Diplommatina rupicola O.F. von Möllendorff, 1887 - (DIPLOMMATINIDAE)
- rupicola, Napaeus rupicola (A. Mousson, 1872) - (ENIDAE)
- rupicola, Gyroscala rupicola (J.D. Kurtz, 1860) - (EPITONIIDAE)
- rupicola, Epitonium rupicola G.B. III Sowerby, 1916 - syn of: Gyroscala rupicola (J.D. Kurtz, 1860) - (EPITONIIDAE)
- rupicola, Gastrocopta rupicola (T. Say, 1821) - (GASTROCOPTIDAE)
- rupicola, Lehmannia rupicola M. Lessona & C. Pollonera, 1884 - (LIMACIDAE)
- rupicola, Anatina rupicola J.B.P.A. Lamarck, 1818 - syn of: Thracia distorta (G. Montagu, 1803) - (MACTRIDAE)
- rupicola, Mitra rupicola L.A. Reeve, 1844 - (MITRIDAE)
- rupicola, Ancylus rupicola A. Mousson, 1872 - syn of: Ancylus striatus J.R.C. Quoy & J.P. Gaimard, 1833 - (PLANORBIDAE)
- rupicola, Delavaya rupicola P.M. Heude, 1889 - (POMATIOPSIDAE)
- rupicola, Pyramidula rupicola G. Stabile, 1869 - syn of: Pyramidula rupestris (J.P.R. Draparnaud, 1801) - (PYRAMIDULIDAE)
- rupicola, Semele rupicola W.H. Dall, 1915 - (SEMELIDAE)
- rupicola, Lithotis rupicola (H.F. Blanford, 1836) - (SUCCINEIDAE)
- rupicola, Thracia rupicola J.B.P.A. Lamarck, 1818 - syn of: Thracia distorta (G. Montagu, 1803) - (THRACIIDAE)
- Rupicola, syn of: Genus Thracia W.E. Leach in H.M.D. De Blainville, 1824 (THRACIIDAE)
- rupicola, Velutina rupicola T.A. Conrad, 1831 - syn of: Velutina velutina (O.F. Müller, 1776) - (VELUTINIDAE)
- rupicola litotes, Mentissoidea rupicola litotes (A. Schmidt, 1868) - (CLAUSILIIDAE)
- rupicollina, Astraea rupicollina R. Stohler, 1959 - syn of: Megastraea turbanica (W.H. Dall, 1910) - (TURBINIDAE)
- rupicolus, Bulimulus rupicolus L.A. Reeve, 1848 - syn of: Bulimulus prolatus A.A. Gould, 1846 - (BULIMULIDAE)
- rupinicola, Pyrgulopsis rupinicola R. Hershler, T.J. Frest, H.P. Liu & E.J. Johannes, 2003 - (HYDROBIIDAE)
- Rupiphaga, syn of: Genus Lithophaga P.F. Rφding, 1798 (MYTILIDAE)
- rupis, Tudora rupis H.B. Baker, 1924 - (POMATIIDAE)
- rupis grandiensis, Tudora rupis grandiensis H.B. Baker, 1924 - syn of: Tudora muskusi grandiensis H.B. Baker, 1924 - (POMATIIDAE)
- rupis hatoensis, Tudora rupis hatoensis P.W. Hummelinck, 1940 - (POMATIIDAE)
- rupis newportensis, Tudora rupis newportensis H.B. Baker, 1924 - (POMATIIDAE)
- rupis styriaca, Tudora rupis styriaca H.B. Baker, 1924 - (POMATIIDAE)
- rupisfontis, Cyclopilsbrya rupisfontis (E. Chitty, 1857) - (MEGALOMASTOMIDAE)
- rupisfontis, Poteria rupisfontis E. Chitty, 1857 - syn of: Cyclopilsbrya rupisfontis (E. Chitty, 1857) - (NEOCYCLOTIDAE)
- rupium, Eubranchus rupium (H.P.C. Møller, 1842) - (EUBRANCHIDAE)
- rupium, Semele rupium (G.B. I Sowerby, 1833) - (SEMELIDAE)
- rupivaga, Napaeus rupivaga J.F. Mabille, 1885 - syn of: Napaeus rupicola (A. Mousson, 1872) - (ENIDAE)
- rupivagus, Canaridiscus rupivagus W. Rähle & Allgaier, 2011 - (DISCIDAE)
- ruppachense, Werneroceras ruppachense Kayser, 1879 † - syn of: Fidelites ruppachensis (Kayser, 1879 †) - (WERNEROCERATIDAE) (FOSSIL)
- ruppachensis, Fidelites ruppachensis (Kayser, 1879 †) - (AGONIATITIDAE) (FOSSIL)
- ruppachensis, Goniatites ruppachensis Kayser, 1879 † - syn of: Fidelites ruppachensis (Kayser, 1879 †) - (GONIATITIDAE) (FOSSIL)
- ruppelli, Cerithium ruppelli R.A. Philippi, 1848 - syn of: Cerithium rueppelli R.A. Philippi, 1848 - (CERITHIIDAE)
- ruppelli, Cerithium ruppelli J.B.P.A. Lamarck in L.L. Vaillant, 1865 - syn of: Cerithium rueppelli R.A. Philippi, 1848 - (CERITHIIDAE)
- ruppelli, Chiroteuthis ruppelli A. de Rochebrune, 1884 - syn of: Chiroteuthis veranii (A.E.J. Férussac, 1835) - (CHIROTEUTHIDAE)
- ruppelli, Diodora ruppelli (G.B. I Sowerby, 1835) - (FISSURELLIDAE)
- ruppelli, Histioteuthis ruppelli J.B. Vérany, 1846 - syn of: Histioteuthis bonnellii (A.E.J. Férussac, 1835) - (HISTIOTEUTHIDAE)
- ruppelli, Sphenia ruppelli A. Adams, 1850 - syn of: Sphenia rueppellii A. Adams, 1851 - (MYIDAE)
- ruppelli, Canarium ruppelli L.A. Reeve, 1850 - syn of: Canarium erythrinum L.W. Dillwyn, 1817 - (STROMBIDAE)
- ruppelli, Strombus ruppelli L.A. Reeve, 1850 - syn of: Canarium erythrinum L.W. Dillwyn, 1817 - (STROMBIDAE)
- ruppelli abulatti, Diodora ruppelli abulatti J.M.J. Christiaens, 1987 - (FISSURELLIDAE)
- ruppelliana, Mya ruppelliana (L.A. Reeve, 1857) - (MYIDAE)
- ruppelliana, Psammotella ruppelliana L.A. Reeve, 1857 - syn of: Hiatula rosea (J.F. Gmelin, 1791) - (PSAMMOBIIDAE)
- ruppelliana, Sanguinolaria ruppelliana L.A. Reeve, 1857 - syn of: Hiatula rosea (J.F. Gmelin, 1791) - (PSAMMOBIIDAE)
- ruppelliana, Soletellina ruppelliana L.A. Reeve, 1857 - syn of: Hiatula rosea (J.F. Gmelin, 1791) - (PSAMMOBIIDAE)
- ruppellii, Pseudochama ruppellii L.A. Reeve, 1847 - syn of: Pseudochama corbierei (I.H. Jonas, 1846) - (CHAMIDAE)
- ruppellii, Chama ruppellii L.A. Reeve, 1847 - syn of: Pseudochama corbierei (I.H. Jonas, 1846) - (CHAMIDAE)
- ruppellii, Conus ruppellii L.A. Reeve, 1848 - syn of: Nitidoconus boeticus (L.A. Reeve, 1844) - (CONIDAE)
- ruppellii, Gastrochaena ruppellii G.P. Deshayes, 1855 - syn of: Gastrochaena cuneiformis L. Spengler, 1783 - (GASTROCHAENIDAE)
- ruppellii, Histioteuthis ruppellii J.B. Vérany, 1846 - syn of: Histioteuthis bonnellii (A.E.J. Férussac, 1835) - (HISTIOTEUTHIDAE)
- ruppellii, Mitra ruppellii L.A. Reeve, 1844 - syn of: Nebularia rueppellii L.A. Reeve, 1844 - (MITRIDAE)
- ruppellii, Leptoconchus ruppellii G.P. Deshayes, 1863 - syn of: Magilus antiquus P.D. Montfort, 1810 - (MURICIDAE)
- ruppellii, Phyllidia ruppellii L.S.R. Bergh, 1869 - syn of: Phyllidia rueppelii (L.S.R. Bergh, 1869) - (PHYLLIDIIDAE)
- ruppiae, Potamopyrgus ruppiae C. Hedley, 1912 - syn of: Ascorhis victoriae (J.E. Tenison-Woods, 1878) - (TATEIDAE)
- rupta, Drilliola rupta (J. Marwick, 1931 †) - (BORSONIIDAE) (FOSSIL)
- rurae, Cancelloceras rurae (A. Schmidt, 1925 †) - (GASTRIOCERATIDAE) (FOSSIL)
- ruris, Megastomia ruris A. Peñas & E. Rolán, 1999 - (PYRAMIDELLIDAE)
- ruris, Solariorbis ruris F. Rubio, R. Fernández-Garcés & E. Rolán, 2011 - (TORNIDAE)
- Rursiceras, Genus Rursiceras Prieser, 1937 (ASPIDOCERATIDAE) (FOSSIL)
- rursicosta, Tropidoceras rursicosta Buckman, 1918 † - (POLYMORPHITIDAE) (FOSSIL)
- rursicostatum, Paracaloceras rursicostatum (Frebold, 1967 †) - (ARIETITIDAE) (FOSSIL)
- rursicostatum, Mercaticeras rursicostatum Merla, 1932 † - (HILDOCERATIDAE) (FOSSIL)
- rursicostatus, Rhabdocolpus rursicostatus (F. Haas, 1953 †) - (PROCERITHIIDAE) (FOSSIL)
- rursiradiatus, Penaceras rursiradiatus (G. Humphrey, 1949 †) - (DESHAYESITIDAE) (FOSSIL)
- rursiradiatus, Flemingites rursiradiatus Chao, 1959 † - (FLEMINGITIDAE) (FOSSIL)
- rursiradiatus, Hermannites rursiradiatus Brühwiler & al., 2012 † - (FLEMINGITIDAE) (FOSSIL)
- rursiradiatus, Shamaraites rursiradiatus Brühwiler & Bucher, 2012 † - (FLEMINGITIDAE) (FOSSIL)
- rursum, Ebrayiceras rursum Buckman † - (MORPHOCERATIDAE) (FOSSIL)
- rurutua, Fluviopupa rurutua M. Haase, O. Gargominy & Fontaine, 2005 - (HYDROBIIDAE)
- rusa, Acteocina rusa J. Gardner, 1938 † - (ACTEOCINIDAE) (FOSSIL)
- ruschenbergeri, Laevichlamys ruschenbergeri (G.W. Tryon, 1869) - (PECTINIDAE)
- ruschenbergerii, Azumapecten ruschenbergerii (G.W. Tryon, 1869) - (PECTINIDAE)
- ruschenbergiana, Megaspira ruschenbergiana J.C. Jay, 1836 - (MEGASPIRIDAE)
- ruscinica, Euomphalia strigella ruscinica (J.R. Bourguignat, 1881) - (HYGROMIIDAE)
- rusconii, Aeolidia rusconii J.B. Vérany, 1846 - (AEOLIDIIDAE)
- Ruscula, Genus Ruscula Casey, 1904 (FASCIOLARIIDAE) (FOSSIL)
- ruscuriana, Ocenebra ruscuriana G.S. Coen, 1947 ex T.A. de M. Monterosato MS - syn of: Ocenebra erinaceus (C. Linnaeus, 1758) - (MURICIDAE)
- ruscuriana, Ostrea ruscuriana J.B.P.A. Lamarck, 1819 - syn of: Striostrea denticulata (I. von Born, 1778) - (OSTREIDAE)
- ruscuriana, Crassostrea ruscuriana J.B.P.A. Lamarck, 1819 - syn of: Striostrea denticulata (I. von Born, 1778) - (OSTREIDAE)
- ruscuriana, Venerupis ruscuriana T.A. de M. Monterosato, 1884 - (VENERIDAE)
- ruscurianus, Jujubinus ruscurianus (H.C. Weinkauff, 1868) - (TROCHIDAE)
- ruscurianus flammulata, Jujubinus ruscurianus flammulata P.M. Pallary, 1920 - syn of: Jujubinus ruscurianus (H.C. Weinkauff, 1868) - (TROCHIDAE)
- ruscurianus purpurea, Jujubinus ruscurianus purpurea P.M. Pallary, 1920 - syn of: Jujubinus ruscurianus (H.C. Weinkauff, 1868) - (TROCHIDAE)
- ruseae, Barrettia ruseae Chubb, 1967 † - (HIPPURITIDAE) (FOSSIL)
- rushdenensis, Radulopecten rushdenensis J. Lycett, 1863 † - (PECTINIDAE) (FOSSIL)
- rushense, Protocycloceras rushense (McChesney, 1859 †) - (PROTOCYCLOCERATIDAE) (FOSSIL)
- rushensis, Orthoceras rushensis F.B. Meek & A.H. Worthen, 1873 † - syn of: Pseudorthoceras knoxense (McChesney, 1859 †) - (ORTHOCERATIDAE) (FOSSIL)
- rushi, Aclis rushi P. Bartsch, 1911 - (ACLIDIDAE)
- rushi, Mactromeris rushi Wagner & Schilling, 1923 † - (MACTRIDAE) (FOSSIL)
- rushi, Urosalpinx rushi H.A. Pilsbry, 1897 - syn of: Urosalpinx haneti (S.A.A. Petit De La Saussaye, 1856) - (MURICIDAE)
- rushi, Pyrunculus rushi (W.H. Dall, 1927) - (RETUSIDAE)
- rushi, Quinnia rushi (W.H. Dall, 1927) - (SEGUENZIIDAE)
- rushi, Seguenzia rushi W.H. Dall, 1927 - syn of: Quinnia rushi (W.H. Dall, 1927) - (SEGUENZIIDAE)
- rushii, Colus rushii (W.H. Dall, 1889) - (BUCCINIDAE)
- rushii, Chrysodomus rushii W.H. Dall, 1889 - syn of: Colus rushii (W.H. Dall, 1889) - (BUCCINIDAE)
- rushii, Bulimulus rushii H.A. Pilsbry - (BULIMULIDAE)
- rushii, Chilina rushii H.A. Pilsbry, 1896 - (CHILINIDAE)
- rushii, Asperiscala rushii W.H. Dall, 1889 - syn of: Epitonium striatissimum (T.A. de M. Monterosato, 1878) - (EPITONIIDAE)
- rushii, Epitonium rushii W.H. Dall, 1889 - syn of: Epitonium striatissimum (T.A. de M. Monterosato, 1878) - (EPITONIIDAE)
- rushii, Fusinus rushii (W.H. Dall, 1889) - (FASCIOLARIIDAE)
- rushii, Polyschides rushii (H.A. Pilsbry & B. Sharp, 1898) - (GADILIDAE)
- rushii, Potamolithus rushii H.A. Pilsbry, 1896 - (LITHOGLYPHIDAE)
- rushii, Mathilda rushii W.H. Dall, 1889 - (MATHILDIDAE)
- rushii, Mitra rushii W.H. Dall, 1887 - syn of: Vexillum wandoense Holmes, 1859 - (MITRIDAE)
- rushii, Urosalpinx rushii H.A. Pilsbry, 1897 - syn of: Urosalpinx haneti (S.A.A. Petit De La Saussaye, 1856) - (MURICIDAE)
- rushii, Plesiothyreus rushii (W.H. Dall, 1889) - (PHENACOLEPADIDAE)
- rushii, Turbonilla rushii K.J. Bush, 1899 - (PYRAMIDELLIDAE)
- rushii, Terebra rushii W.H. Dall, 1889 - (TEREBRIDAE)
- rushii, Asthenothaerus rushii (H.A. Pilsbry, 1897) - (THRACIIDAE)
- rushii, Bushia rushii H.A. Pilsbry, 1897 - syn of: Asthenothaerus rushii (H.A. Pilsbry, 1897) - (THRACIIDAE)
- rushii, Thracia rushii H.A. Pilsbry, 1897 - syn of: Asthenothaerus rushii (H.A. Pilsbry, 1897) - (THRACIIDAE)
- rushii, Triphora rushii W.H. Dall, 1889 - (TRIPHORIDAE)
- rushii, Umbraculum rushii W.H. Dall, 1889 - syn of: Plesiothyreus rushii (W.H. Dall, 1889) - (UMBRACULIDAE)
- rushii arne, Polyschides rushii arne J. Henderson, 1920 - syn of: Polyschides rushii (H.A. Pilsbry & B. Sharp, 1898) - (GADILIDAE)
- rushii stylina, Asperiscala rushii stylina W.H. Dall, 1889 - syn of: Epitonium turritellula (O.A.L. Mörch, 1875) - (EPITONIIDAE)
- rusidei, Pliopholyx rusidei T.C. Yen, 1947 † - (PLIOPHOLYGIDAE) (FOSSIL)
- rusiostoma, Pyrostoma plicatula rusiostoma (F. Held, 1878) - (CLAUSILIIDAE)
- Rusoceras, Subgenus Mortoniceras (Rusoceras) van Hoepen, 1946 (BRANCOCERATIDAE) (FOSSIL)
- russa, Pusia russa A.A. Gould, 1860 - syn of: Vexillum pardale (H.C. Küster, 1840) - (COSTELLARIIDAE)
- russa, Cryptonatica russa (A.A. Gould, 1859) - (NATICIDAE)
- russa, Natica russa W.H. Dall, 1874 - syn of: Cryptonatica affinis (J.F. Gmelin, 1791) - (NATICIDAE)
- russadirensis, Dupotetia russadirensis (P.M. Pallary, 1933) - (HELICIDAE)
- russadirensis minor, Dupotetia russadirensis minor (P.M. Pallary, 1933) - (HELICIDAE)
- Russanovia, Subgenus Nikitinoceras (Russanovia) Bodylevsky, 1902 (POLYPTYCHITIDAE) (FOSSIL)
- russata, Chlamys russata L.A. Reeve, 1853 - (PECTINIDAE)
- Russatus, Genus Russatus G.A. Solem, 1983 (CHAROPIDAE)
- russeggeri, Conus russeggeri Hauer, 1848 † - (CONIDAE) (FOSSIL)
- russeli, Mitrella russeli (J.W. Brazier, 1874) - (COLUMBELLIDAE)
- russell, Turbonilla russell A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- russelli, Udosarx lyrata russelli G.R. Webb, 1980 - (ARIOLIMACIDAE)
- russelli, Gymnotoceras russelli Smith, 1914 † - syn of: Parafrechites meeki (Mojsisovics, 1888 †) - (BEYRICHITIDAE) (FOSSIL)
- russelli, Varohadra russelli T. Iredale, 1937 - syn of: Sphaerospira mourilyani (J.W. Brazier, 1875) - (CAMAENIDAE)
- russelli, Goliathiceras russelli (Reeside, 1919 †) - (CARDIOCERATIDAE) (FOSSIL)
- russelli, Strophiops russelli W.J. Clench, 1938 - (CERIONIDAE)
- russelli, Cerithium russelli C.J. Maury, 1917 - syn of: Cerithium atratum (I. von Born, 1778) - (CERITHIIDAE)
- russelli, Lucilina russelli H.S. Ladd, 1966 † - (CHITONIDAE) (FOSSIL)
- russelli, Mitrella russelli J.W. Brazier, 1875 - syn of: Mitrella russeli (J.W. Brazier, 1874) - (COLUMBELLIDAE)
- russelli, Pseudothurmannia russelli Anderson, 1938 † - (CRIOCERATITIDAE) (FOSSIL)
- russelli, Tengchiena russelli (J.W. Brazier, 1875) - (EUCONULIDAE)
- russelli, Anaflemingites russelli (A. Hyatt & Smith, 1905 †) - (FLEMINGITIDAE) (FOSSIL)
- russelli, Sonorella russelli W.B. Miller, 1984 - (HELMINTHOGLYPTIDAE)
- russelli, Neocomites russelli F.M. Anderson, 1938 † - (NEOCOMITIDAE) (FOSSIL)
- russelli, Liguus flammellus russelli W.J. Clench, 1935 - (ORTHALICIDAE)
- russelli, Ostrea russelli H.D. Russell & Landes, 1937 † - (OSTREIDAE) (FOSSIL)
- russelli, Chondropoma russelli W.J. Clench, 1937 - (POMATIIDAE)
- russelli, Rhabdoceras russelli A. Hyatt & Smith, 1905 † - syn of: Rhabdoceras suessi J. Von Hauer, 1860 † - (RHABDOCERATIDAE) (FOSSIL)
- russelli, Rudolfoceras russelli Hook & Flower, 1977 † - (RUDOLFOCERATIDAE) (FOSSIL)
- russelli, Zethalia russelli J. Marwick, 1965 † - (TROCHIDAE) (FOSSIL)
- russeola, Megaustenia russeola (P.M.A. Morelet, 1865) - (ARIOPHANTIDAE)
- russetae, Cinguloterebra russetae (T.A. Garrard, 1976) - (TEREBRIDAE)
- russetae, Terebra russetae T.A. Garrard, 1976 - syn of: Cinguloterebra russetae (T.A. Garrard, 1976) - (TEREBRIDAE)
- Russetia, syn of: Genus Discotectonica J. Marwick, 1931 (ARCHITECTONICIDAE)
- russi, Achatinella mustelina russi D.A. Welch, 1938 - (ACHATINELLIDAE)
- russica, Onoba russica A.N. Golikov, 1986 - (RISSOIDAE)
- russiense, Trilemma russiense Blagovetshenskiy & Shumilkin, 2006 † - (APORRHAIDAE) (FOSSIL)
- russiense, Cerithium russiense A.V.M.D. D'Orbigny, 1845 † - syn of: Procerithium russiense (A.V.M.D. D'Orbigny, 1845 †) - (CERITHIIDAE) (FOSSIL)
- russiense, Procerithium russiense (A.V.M.D. D'Orbigny, 1845 †) - (PROCERITHIIDAE) (FOSSIL)
- russiensis, Lithancylus russiensis Mikhailova & Baraboshkin, 2001 † - (ANCYLOCERATIDAE) (FOSSIL)
- russiensis, Belemnites russiensis A.V.M.D. D'Orbigny, 1842 † - (BELEMNITELLIDAE) (FOSSIL)
- russiensis, Volynites russiensis Lyashenko, 1957 † - (VOLYNITIDAE) (FOSSIL)
- russinoniacea, Alvania russinoniacea É.A.A. Locard, 1892 - syn of: Alvania carinata ecarinata T.A. de M. Monterosato, 1884 - (RISSOIDAE)
- russjenseni, Lightbournus russjenseni W.G. Lyons & Snyder, 2008 - (FASCIOLARIIDAE)
- russjenseni, Lyria russjenseni W.K. Emerson, 1985 - (VOLUTIDAE)
- russkiensis, Hypoanthraconaia russkiensis Silantiev & Urazaeva, 2017 † - (NAIADITIDAE) (FOSSIL)
- russkiensis, Pleuronautilus russkiensis Zakharov, 1978 † - (TAINOCERATIDAE) (FOSSIL)
- russoi, Pseudosilesites russoi H.A. Leanza, 1970 † - (DESMOCERATIDAE) (FOSSIL)
- russoi, Ponentina russoi P.M. Pallary, 1927 - syn of: Ponentina subvirescens (J.C. Bellamy, 1839) - (HYGROMIIDAE)
- russoi, Silesites russoi H.A. Leanza, 1970 † - syn of: Pseudosilesites russoi H.A. Leanza, 1970 † - (SILESITIDAE) (FOSSIL)
- russoi, Clathroterebra russoi (U. Aubry, 1991) - (TEREBRIDAE)
- russonitens, Cypraea russonitens J.C. Melvill, 1888 - syn of: Cypraea tigris C. Linnaeus, 1758 - (CYPRAEIDAE)
- rustaqense, Brachycycloceras rustaqense Niko & al., 1996 † - (BRACHYCYCLOCERATIDAE) (FOSSIL)
- rusteri, Cyathopoma rusteri E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1993 - (CYCLOPHORIDAE)
- rusterucii, Venus rusterucii B.C.M. Payraudeau, 1826 - syn of: Venus casina C. Linnaeus, 1758 - (VENERIDAE)
- rusti, Pyrgula rusti T.A. Neubauer, M. Harzhauser, E. Georgopoulou, O. Mandic & A. Kroh, - (HYDROBIIDAE) (FOSSIL)
- rusti, Cyrtorizoceras rusti Flower, 1952 † - (ONCOCERATIDAE) (FOSSIL)
- rustica, Ampullina rustica (G.P. Deshayes, 1864 † †) - (AMPULLINIDAE) (FOSSIL)
- rustica, Anadara rustica M. Tuomey & F.S. Holmes, 1857 † - (ARCIDAE) (FOSSIL)
- rustica, Scapharca rustica Martin, 1883 † - (ARCIDAE) (FOSSIL)
- rustica, Pygocardia rustica (Sowerby, 1818 †) - (ARCTICIDAE) (FOSSIL)
- rustica, Macrochlamys rustica (L. Pfeiffer) - (ARIOPHANTIDAE)
- rustica, Prorokia rustica (Lycett) † - (ASTARTIDAE) (FOSSIL)
- rustica, Caelatura rustica (R.B. Watson, 1886) - (BARLEEIIDAE)
- rustica, Cochlostyla metaformis rustica A. Mousson, 1849 - (BRADYBAENIDAE)
- rustica, Rhinoclavis rustica (G.B. Brocchi, 1814 †) - (CERITHIIDAE) (FOSSIL)
- rustica, Chaureopa rustica (H.H. Suter, 1894) - (CHAROPIDAE)
- rustica, Allodiscus rustica H.H. Suter, 1894 - syn of: Chaureopa rustica (H.H. Suter, 1894) - (CHAROPIDAE)
- rustica, Clavatula rustica (G.B. Brocchi, 1814 †) - (CLAVATULIDAE) (FOSSIL)
- rustica, Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica, Craspedopoma rustica R.T. Lowe, 1860 - syn of: Craspedopoma mucronatum (K.T. Menke, 1830) - (CRASPEDOPOMATIDAE)
- rustica, Hamusella rustica Valkov, 1987 † - (CYRTONELLIDA (UNASSIGNED)) (FOSSIL)
- rustica, Tengchiena rustica (L. Pfeiffer, 1852) - (EUCONULIDAE)
- rustica, Leucozonia rustica J.B.P.A. Lamarck, 1822 - syn of: Latirolagena smaragdulus (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- rustica, Dumortieria rustica (Buckman, 1902 †) - (HILDOCERATIDAE) (FOSSIL)
- rustica, Ceratia rustica R.B. Watson, 1886 - syn of: Caelatura rustica (R.B. Watson, 1886) - (IRAVADIIDAE)
- rustica, Littorina rustica G.D. Nardo, 1847 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (LITTORINIDAE)
- rustica, Galba humilis rustica I. Lea, 1841 - (LYMNAEIDAE)
- rustica, Darina rustica M. Huber, 2010 - (MACTRIDAE)
- rustica, Tandonia rustica (P.A. Millet, 1843) - (MILACIDAE)
- rustica, Mitra rustica G.B. II Sowerby, 1874 - syn of: Vexillum michaui (J.C.H. Crosse & P.H. Fischer, 1864) - (MITRIDAE)
- rustica, Stramonita rustica (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- rustica, Nerita rustica G.D. Nardo, 1847 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (NERITIDAE)
- rustica, Ostrea rustica G.S. Poli, 1795 - syn of: Flexopecten glaber (C. Linnaeus, 1758) - (OSTREIDAE)
- rustica, Ostrea rustica J.F. Gmelin, 1791 - syn of: Flexopecten glaber (C. Linnaeus, 1758) - (OSTREIDAE)
- rustica, Partula rustica W.H. Pease, 1866 - (PARTULIDAE)
- rustica, Patella rustica C. Linnaeus, 1758 - (PATELLIDAE)
- rustica, Chlamys rustica G.S. Poli, 1795 - syn of: Flexopecten glaber (C. Linnaeus, 1758) - (PECTINIDAE)
- rustica, Pholadomya rustica Phillips, 1871 † - (PHOLADOMYIDAE) (FOSSIL)
- rustica, Crassispira rustica (G.B. I Sowerby, 1834) - (PSEUDOMELATOMIDAE)
- rustica, Pilsbryspira rustica P.P. Carpenter, 1857 - syn of: Pilsbryspira aterrima (G.B. I Sowerby, 1834) - (PSEUDOMELATOMIDAE)
- rustica, Cingula rustica R.B. Watson, 1886 - syn of: Caelatura rustica (R.B. Watson, 1886) - (RISSOIDAE)
- rustica, Cleotrivia rustica D. Fehse, 2015 - (TRIVIIDAE)
- rustica, Truncatella rustica A. Mousson, 1865 - (TRUNCATELLIDAE)
- rustica, Turritella rustica Uliana & Camacho, 1975 † - (TURRITELLIDAE) (FOSSIL)
- rustica, Contradens contradens rustica (I. Lea, 1856) - (UNIONIDAE)
- rustica, Tivelina rustica (G.P. Deshayes, 1825 †) - (VENERIDAE) (FOSSIL)
- rustica, Caryatis rustica A. Römer, 1867 - syn of: Pitar patagonicus (A.V.M.D. D'Orbigny, 1842) - (VENERIDAE)
- rustica, Meretrix rustica G.P. Deshayes, 1825 † - syn of: Tivelina rustica (G.P. Deshayes, 1825 †) - (VENERIDAE) (FOSSIL)
- rustica, Voluta rustica C. Linnaeus, 1758 - syn of: Columbella rustica (C. Linnaeus, 1758) - (VOLUTIDAE)
- rustica apiculata, Columbella rustica apiculata P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica azorica, Columbella rustica azorica H. Drouët, 1858 - syn of: Columbella adansoni K.T. Menke, 1853 - (COLUMBELLIDAE)
- rustica cuneatiformis, Columbella rustica cuneatiformis P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica elevada, Patella rustica elevada C. Linnaeus, 1758 - (PATELLIDAE)
- rustica elongata, Columbella rustica elongata R.A. Philippi, 1836 - (COLUMBELLIDAE)
- rustica lactea, Columbella rustica lactea T.A. de M. Monterosato, 1875 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica lutea, Columbella rustica lutea P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica major, Columbella rustica major P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica marmorata, Columbella rustica marmorata T.A. de M. Monterosato, 1878 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica maroccana, Patella rustica maroccana P.M. Pallary, 1920 - syn of: Patella rustica C. Linnaeus, 1758 - (PATELLIDAE)
- rustica minima, Columbella rustica minima M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1882 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica minor, Columbella rustica minor P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica obesula, Columbella rustica obesula P.M. Pallary, 1900 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica orientalis, Patella rustica orientalis P.M. Pallary, 1938 - syn of: Patella rustica C. Linnaeus, 1758 - (PATELLIDAE)
- rustica striata, Columbella rustica striata (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- rustica syriaca, Columbella rustica syriaca T.A. de M. Monterosato, 1899 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica syriaca, Columbella rustica syriaca G.S. Coen, 1933 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica trigonostoma, Columbella rustica trigonostoma P.M. Pallary, 1920 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- rustica tumida, Pygocardia rustica tumida (P. Nyst, 1836 †) - (ARCTICIDAE) (FOSSIL)
- rusticana, Margaritiphaedusa rusticana (H. Nordsieck, 1998) - (CLAUSILIIDAE)
- rusticana, Succinea rusticana A.A. Gould, 1846 - (SUCCINEIDAE)
- rusticana amoena, Margaritiphaedusa rusticana amoena H. Nordsieck, 2001 - (CLAUSILIIDAE)
- rusticana guadelupensis, Succinea rusticana guadelupensis W.H. Dall, 1900 - syn of: Succinea guadelupensis W.H. Dall, 1900 - (SUCCINEIDAE)
- rusticata, Doris rusticata J. Alder & A. Hancock, 1864 - (DORIDIDAE)
- rusticella, Helicina rusticella P.M.A. Morelet, 1849 - syn of: Poenia lirata (L. Pfeiffer, 1847) - (HELICINIDAE)
- rusticella, Odostomia rusticella M. Yokoyama, 1927 - (PYRAMIDELLIDAE)
- rusticellus, Bostryx rusticellus (P.M.A. Morelet, 1860) - (BULIMULIDAE)
- rusticoides, Columbella rusticoides A. Heilprin, 1887 - (COLUMBELLIDAE)
- rusticoides, Contradens contradens rusticoides R.A.M. Brandt, 1974 - (UNIONIDAE)
- rusticula, Abida rusticula É.A.A. Locard, 1894 - syn of: Abida secale (J.P.R. Draparnaud, 1801) - (CHONDRINIDAE)
- rusticula, Andrefrancia rusticula (J. Gassies, 1859) - (ENDODONTIDAE)
- rusticula, Pyrula rusticula B. de Basterot, 1825 † - syn of: Tudivasum rusticulum (B. de Basterot, 1825 †) - (MELONGENIDAE) (FOSSIL)
- rusticula, Melania rusticula G. von dem Busch, 1858 - syn of: Pachychilus largillierti (R.A. Philippi, 1843) - (THIARIDAE)
- rusticula, Tudicla rusticula B. de Basterot, 1825 † - syn of: Tudivasum rusticulum (B. de Basterot, 1825 †) - (TURBINELLIDAE) (FOSSIL)
- rusticulum, Tudivasum rusticulum (B. de Basterot, 1825 †) - (TURBINELLIDAE) (FOSSIL)
- rusticulum mutica, Tudivasum rusticulum mutica (J.P.S. Grateloup, 1840) - (TURBINELLIDAE)
- rusticulus, Fusinus rusticulus (T.A. de M. Monterosato, 1880) - (FASCIOLARIIDAE)
- rusticulus, Pseudofusus rusticulus T.A. de M. Monterosato, 1880 - syn of: Fusinus rusticulus (T.A. de M. Monterosato, 1880) - (FASCIOLARIIDAE)
- rusticulus, Murex rusticulus B. de Basterot, 1825 † - syn of: Tudivasum rusticulum (B. de Basterot, 1825 †) - (MURICIDAE) (FOSSIL)
- rusticum, Metasigaloceras rusticum (Sowerby, 1817 †) - (ACANTHOCERATIDAE) (FOSSIL)
- rusticum, Buccinum rusticum J.F. Gmelin, 1791 - syn of: Latirolagena smaragdulus (C. Linnaeus, 1758) - (BUCCINIDAE)
- rusticum, Acanthocardia rusticum C. Linnaeus, 1767 - syn of: Acanthocardia tuberculata (C. Linnaeus, 1758) - (CARDIIDAE)
- rusticum, Vexillum rusticum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- rusticum, Ezeiceras rusticum (J.J. Vermeulen, 1996 †) - (HEMIHOPLITIDAE) (FOSSIL)
- rusticum, Liparoceras rusticum Spath, 1938 † - (LIPAROCERATIDAE) (FOSSIL)
- rusticus, Chiton rusticus G.P. Deshayes, 1863 - syn of: Chiton mauritianus (J.R.C. Quoy & J.P. Gaimard, 1835) - (CHITONIDAE)
- rusticus, Conus rusticus G.S. Poli, 1826 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- rusticus, Glacidorbis rusticus W.F. Ponder & G.J. Avern, 2000 - (GLACIDORBIDAE)
- rusticus, Hamitoides rusticus Spath, 1939 † - (LABECERATIDAE) (FOSSIL)
- rusticus, Tectarius rusticus (R.A. Philippi, 1846) - (LITTORINIDAE)
- rusticus, Urosalpinx rusticus (T.A. Conrad, 1839 †) - (MURICIDAE) (FOSSIL)
- rusticus, Murex rusticus L.A. Reeve, 1845 - syn of: Favartia balteata (G.B. II Sowerby, 1841) - (MURICIDAE)
- rusticus, Murex rusticus F.P. Jousseaume, 1874 - syn of: Jaton flavidus (F.P. Jousseaume, 1874) - (MURICIDAE)
- rusticus, Omphalius rusticus (J.F. Gmelin, 1791) - (TEGULIDAE)
- rusticus, Trochus rusticus J.F. Gmelin, 1791 - syn of: Omphalius rusticus (J.F. Gmelin, 1791) - (TROCHIDAE)
- rusticus, Unio rusticus G.B. Sowerby, 1868 - syn of: Barynaias plexus (T.A. Conrad, 1838) - (UNIONIDAE)
- rusticus balcanicus, Milax rusticus balcanicus A.V. Grossu & D. Lupu, 1961 - syn of: Tandonia kusceri H. Wagner, 1931 - (MILACIDAE)
- rusticus colliculus, Omphalius rusticus colliculus G.B. III Sowerby, 1913 - (TEGULIDAE)
- rusticus longipenis, Milax rusticus longipenis A.V. Grossu & D. Lupu, 1961 - syn of: Tandonia kusceri H. Wagner, 1931 - (MILACIDAE)
- rustyus, Eubranchus rustyus (Er. Marcus, 1961) - (EUBRANCHIDAE)
- rusum, Lioglyphostoma rusum J. Gardner, 1937 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- rutae, Granulina rutae J.A. Ortea, L. Moro & J. Martin Barrios, 2008 - (MARGINELLIDAE)
- rutaki, Minidonta rutaki F.J. Brook, 2010 - (ENDODONTIDAE)
- rutalis, Partula rutalis L. Pfeiffer - (PARTULIDAE)
- Ruteliscala, syn of: Genus Rutelliscala R.N. Kilburn, 1985 (EPITONIIDAE)
- Rutelliscala, Genus Rutelliscala R.N. Kilburn, 1985 (EPITONIIDAE)
- rutellum, Candaharia rutellum (F.W. Hutton, 1849) - (PARMACELLIDAE)
- rutersvillensis, Unio rutersvillensis I. Lea, 1859 - syn of: Ligumia subrostrata (T. Say, 1831) - (UNIONIDAE)
- rutfordi, Proplina rutfordi Webers & al., 1992 † - (TRYBLIDIIDAE) (FOSSIL)
- ruthae, Felimare ruthae (Ev. Marcus & R.N. Hughes, 1974) - (CHROMODORIDIDAE)
- ruthae, Kioconus ruthae E. Monnier & L. Limpalaër, 2013 - (CONIDAE)
- ruthae, Attiliosa ruthae R. Houart, 1996 - (MURICIDAE)
- ruthae, Vokesimurex ruthae (E.H. Vokes, 1988) - (MURICIDAE)
- ruthae, Spectamen ruthae D.G. Herbert, 1987 - (SOLARIELLIDAE)
- ruthae, Pseudosubulina ruthae H.A. Pilsbry, 1954 - (SPIRAXIDAE)
- ruthae, Gulella ruthae K.C. Emberton, 2002 - (STREPTAXIDAE)
- ruthae, Turris ruthae R.N. Kilburn, 1983 - (TURRIDAE)
- ruthenense, Arieticeras ruthenense (Reynes, 1868 †) - (HILDOCERATIDAE) (FOSSIL)
- Ruthenica, Genus Ruthenica W.A. Lindholm, 1924 (CLAUSILIIDAE)
- ruthenicus, Abyssotrophon ruthenicus R.V. Egorov, 1993 - (MURICIDAE)
- Ruthenoceras, Genus Ruthenoceras Korde, 1954 (ELLESMEROCERATIDAE) (FOSSIL)
- rutherfordi, Drepanites rutherfordi McLearn, 1937 † - (TIBETITIDAE) (FOSSIL)
- rutherfordiana, Dentiovula rutherfordiana (C.N. Cate, 1973) - (OVULIDAE)
- ruthi, Astraea ruthi A.H. Verrill, 1948 - syn of: Lithopoma phoebium (P.F. Röding, 1798) - (TURBINIDAE)
- Ruthia, Genus Ruthia D.R. Shasky, 1970 (COLUMBELLIDAE)
- Ruthipecten, Genus Ruthipecten Beu & Taviani, 2013 (PECTINIDAE) (FOSSIL)
- ruthturnerae, Simnia avena ruthturnerae C.N. Cate, 1973 - (OVULIDAE)
- ruthveni, Aviculopecten ruthveni F. McCoy, 1851 † - (AVICULOPECTINIDAE) (FOSSIL)
- ruthveni, Bellerophon ruthveni Reed, 1901 † - (BELLEROPHONTIDAE) (FOSSIL)
- ruthveni, Leiostracus ruthveni F.C. Baker, 1926 - syn of: Leiostracus demerarensis L. Pfeiffer, 1861 - (SIMPULOPSIDAE)
- Ruthvenia, Genus Ruthvenia G.P.L.K. Gude, 1911 (CHAROPIDAE)
- ruthveniana, Lophiotoma ruthveniana (J.C. Melvill, 1923) - (TURRIDAE)
- rutidoloma, Proximitra rutidoloma (H.H. Suter, 1917 †) - (MITRIDAE) (FOSSIL)
- rutidoloma, Bellastraea rutidoloma (R. Tate, 1893) - (TURBINIDAE)
- rutiformis, Crassostrea rutiformis Bohm, 1926 † - (OSTREIDAE) (FOSSIL)
- rutila, Achatinella viridans rutila W. Newcomb, 1853 - (ACHATINELLIDAE)
- rutila, Grandinenia rutila H. Nordsieck, 2016 - (CLAUSILIIDAE)
- rutila, Conasprella rutila (K.T. Menke, 1843) - (CONIDAE)
- rutila, Parviconus rutila K.T. Menke, 1843 - syn of: Conasprella rutila (K.T. Menke, 1843) - (CONIDAE)
- rutila, Polygireulima rutila (P.P. Carpenter, 1864) - (EULIMIDAE)
- rutila, Melanella rutila P.P. Carpenter, 1864 - syn of: Polygireulima rutila (P.P. Carpenter, 1864) - (EULIMIDAE)
- rutila, Facelina rutila A. Pruvot-Fol, 1951 - (FACELINIDAE)
- rutila, Africolaria rutila (Watson, 1882) - (FASCIOLARIIDAE)
- rutila, Cuthona rutila F.M. MacFarland, 1966 - syn of: Diaphoreolis lagunae (C.H. O'Donoghue, 1926) - (FIONIDAE)
- rutila, Coryphella rutila A.E. Verrill, 1879 - (FLABELLINIDAE)
- rutila, Nebularia rutila A. Adams, 1853 - syn of: Nebularia luctuosa A. Adams, 1853 - (MITRIDAE)
- rutila, Muricopsis rutila (L.A. Reeve, 1846) - (MURICIDAE)
- rutila, Natica rutila W. Macgillivray, 1843 - syn of: Euspira montagui (E. Forbes, 1838) - (NATICIDAE)
- rutila, Neocraspedites rutila Alsen, 2006 † - (POLYPTYCHITIDAE) (FOSSIL)
- rutila, Chondrothyra rutila C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- rutila, Chondrothyretes egregia rutila P. Bartsch & C. de la Torre, 1938 - (POMATIIDAE)
- rutila, Electroma rutila L.A. Reeve, 1857 - syn of: Electroma alacorvi (L.W. Dillwyn, 1817) - (PTERIIDAE)
- rutila, Moerella rutila (R.W. Dunker, 1860) - (TELLINIDAE)
- rutila, Tellina rutila R.W. Dunker, 1860 - syn of: Moerella rutila (R.W. Dunker, 1860) - (TELLINIDAE)
- rutila, Mercenaria rutila Sternheimer, 1957 - syn of: Mercenaria mercenaria (C. Linnaeus, 1758) - (VENERIDAE)
- rutila, Cymbiola rutila (W.J. Broderip, 1826) - (VOLUTIDAE)
- rutila alba, Chondrothyra rutila alba M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- rutila ceraunia, Cymbiola rutila ceraunia J.E. Gray, 1838 - (VOLUTIDAE)
- rutila macgillivrayi, Cymbiola rutila macgillivrayi (J.C. Cox, 1873) - (VOLUTIDAE)
- rutila mariangelae, Muricopsis rutila mariangelae E. Rolán & F. Fernandes, 1991 - (MURICIDAE)
- rutila nebulosa, Chondrothyra rutila nebulosa C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- rutila norrisii, Cymbiola rutila norrisii J.E. Gray, 1838 - (VOLUTIDAE)
- rutila piperita, Cymbiola rutila piperita (G.B. II Sowerby, 1845) - (VOLUTIDAE)
- rutila rarilineata, Mercenaria rutila rarilineata Sternheimer, 1957 - syn of: Mercenaria mercenaria (C. Linnaeus, 1758) - (VENERIDAE)
- rutila rueckeri, Cymbiola rutila rueckeri (J.C.H. Crosse, 1867) - (VOLUTIDAE)
- rutilans, Nassa rutilans L.A. Reeve, 1853 - syn of: Nassarius dorsatus (P.F. Röding, 1798) - (NASSARIIDAE)
- rutilans, Nembrotha purpureolineata rutilans (A. Pruvot-Fol, 1931) - (POLYCERIDAE)
- rutilans, Gemmellaroceras rutilans (C.T. Simpson, 1843 †) - (POLYMORPHITIDAE) (FOSSIL)
- rutilans, Subulophora rutilans (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- rutilans, Triphora rutilans R.P.J. Hervier, 1898 - syn of: Subulophora rutilans (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- rutilum, Cymatium rutilum K.T. Menke, 1843 - syn of: Turritriton labiosus (Wood, 1828) - (RANELLIDAE)
- rutilus, Fusinus rutilus K. Nicolay & Berthelot, 1996 - (FASCIOLARIIDAE)
- rutilus, Onychoteuthis rutilus A.A. Gould, 1852 - syn of: Onychoteuthis banksii (W.E. Leach, 1817) - (ONYCHOTEUTHIDAE)
- rutilus, Phasianotrochus rutilus (A. Adams, 1853) - (TROCHIDAE)
- rutipina, Ostrea rutipina J.E. Tenison-Woods, 1878 - syn of: Ostrea angasi Sowerby, 1846 - (OSTREIDAE)
- Rutitrigonia, Genus Rutitrigonia van Hoepen, 1929 (RUTITRIGONIIDAE) (FOSSIL)
- RUTITRIGONIIDAE van Hoepen, 1929 - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-TRIGONIIDA [Order]-MYOPHORELLOIDEA [Superfamily]) (FOSSIL)
- rutllanti, Atlasica rutllanti J. Ahuir, 2015 - (HELICIDAE)
- Rutoceras, Genus Rutoceras Hyatt, 1884 (RUTOCERATIDAE) (FOSSIL)
- RUTOCERATIDAE Hyatt, 1884 - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-NAUTILIDA [Order]-RUTOCERATOIDEA [Superfamily]) (FOSSIL)
- rutogensis, Oriocrassatella rutogensis H.X. Liu & Cui, 1983 † - (ORIOCRASSATELLIDAE) (FOSSIL)
- rutogensis, Magallanesia rutogensis Rao & al., 2015 † - (POLYCONITIDAE) (FOSSIL)
- Rutonia, Genus Rutonia Yang, 1982 (REQUIENIIDAE) (FOSSIL)
- rutor, Auristomia rutor (I. Nofroni & C.F.C. Schander, 1994) - (PYRAMIDELLIDAE)
- rutor, Odostomia rutor I. Nofroni & C.F.C. Schander, 1994 - syn of: Auristomia rutor (I. Nofroni & C.F.C. Schander, 1994) - (PYRAMIDELLIDAE)
- rutoti, Geloina rutoti (Cossmann 1908) † - (CYRENIDAE) (FOSSIL)
- rutoti, Dufoichaena rutoti (Cossmann 1908) † - (GASTROCHAENIDAE) (FOSSIL)
- rutoti, Typhis rutoti A.E.M. Cossmann, 1882 † - (MURICIDAE) (FOSSIL)
- rutoti, Amplogladius rutoti (M. Glibert, 1938 †) - (ROSTELLARIIDAE) (FOSSIL)
- rutoti, Sphenodiscus rutoti de Grossouvre, 1894 † - syn of: Sphenodiscus ubaghsi de Groussouvre, 1894 † - (SPHENODISCIDAE) (FOSSIL)
- Rutotia, Genus Rutotia de Koninck, 1885 (PTERIOMORPHIA (UNASSIGNED)) (FOSSIL)
- rutschi, Parametaria rutschi P.O. Jung, 1969 † - (COLUMBELLIDAE) (FOSSIL)
- rutschi, Lirastrombina rutschi (Gibson-Smith, 1974 †) - (COLUMBELLIDAE) (FOSSIL)
- rutschi, Luria rutschi F.A. Schilder, 1939 - syn of: Luria cinerea (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- rutschi, Antillophos rutschi A.A. Olsson, 1942 † - (NASSARIIDAE) (FOSSIL)
- rutshuruensis, Conulinus rutshuruensis H.A. Pilsbry, 1919 - (CERASTUIDAE)
- rutshuruensis, Halolimnohelix rutshuruensis H.A. Pilsbry, 1919 - (HALOLIMNOHELICIDAE)
- rutshuruensis, Varicostele rutshuruensis H.A. Pilsbry, 1919 - (STREPTAXIDAE)
- rutshuruensis, Thapsia rutshuruensis H.A. Pilsbry, 1919 - (UROCYCLIDAE)
- rutteni, Tylotiella rutteni (C.H. Oostingh, 1938) - (DRILLIIDAE)
- rutteni, Chlamys rutteni Martin, 1914 † - (PECTINIDAE) (FOSSIL)
- rutteni, Dolomena rutteni (C.O. Van Regteren Altena, 1942 †) - (STROMBIDAE) (FOSSIL)
- rutteri, Turbo rutteri Moore † - (TURBINIDAE) (FOSSIL)
- ruttneri, Semibeyrichites ruttneri Krystyn & Tatzreiter, 1991 † - (BEYRICHITIDAE) (FOSSIL)
- ruut, Euglesa ruut V.J. Timm, 1976 - syn of: Pisidium lilljeborgi S. Clessin, 1886 - (SPHAERIIDAE)
- ruvaya, Staphylaea ruvaya W.R. Steadman & B.C. Cotton, 1943 - syn of: Staphylaea limacina (J.B.P.A. Lamarck, 1810) - (CYPRAEIDAE)
- ruvida, Anodonta ruvida J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- ruvidella, Anodonta ruvidella G. Servain, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- ruwenzoriense, Pisidium ruwenzoriense J. Germain, 1911 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- ruwenzoriensis, Halolimnohelix ruwenzoriensis (E.A. Smith, 1909) - (HALOLIMNOHELICIDAE)
- ruwenzoriensis, Gulella ruwenzoriensis A.C. van Bruggen & J.L. Van Goethem, 1999 - (STREPTAXIDAE)
- ruwenzoriensis, Zonitarion ruwenzoriensis H.A. Pilsbry, 1919 - (UROCYCLIDAE)
- ruwenzoriensis, Truncatellina ruwenzoriensis W. Adam, 1957 - (VERTIGINIDAE)
- ruwenzoriensis, Negulus ruwenzoriensis W. Adam, 1957 - (VERTIGINIDAE)
- ruzafai, Felimida ruzafai (J.A. Ortea, J.J. Bacallado & Á. Valdés, 1992) - (CHROMODORIDIDAE)
- ruzencevi, Glaphyrites ruzencevi (Miller & Furnish, 1940 †) - (GLAPHYRITIDAE) (FOSSIL)
- ruzencevi, Eoasianites ruzencevi Miller & Furnish, 1940 † - syn of: Glaphyrites ruzencevi (Miller & Furnish, 1940 †) - (NEOICOCERATIDAE) (FOSSIL)
- ruzencevi, Epithalassoceras ruzencevi Miller & Furnish, 1940 † - (THALASSOCERATIDAE) (FOSSIL)
- ruzhencevi, Eoaraxoceras ruzhencevi Spinosa & al., 1970 † - (ARAXOCERATIDAE) (FOSSIL)
- ruzhencevi, Cyclolobus ruzhencevi (Zakharov, 1983 †) - (CYCLOLOBIDAE) (FOSSIL)
- ruzhencevi, Godthaabites ruzhencevi Zakharov, 1983 † - syn of: Cyclolobus ruzhencevi (Zakharov, 1983 †) - (CYCLOLOBIDAE) (FOSSIL)
- ruzhencevi, Devonopronorites ruzhencevi Bogoslovsky, 1954 † - (DEVONOPRONORITIDAE) (FOSSIL)
- ruzhencevi, Liroceras ruzhencevi Shimanskiy, 1967 † - (LIROCERATIDAE) (FOSSIL)
- ruzhencevi, Cardiella ruzhencevi Leonova, 1981 † - (MARATHONITIDAE) (FOSSIL)
- ruzhencevi, Metalegoceras ruzhencevi Boiko & al., 2008 † - (METALEGOCERATIDAE) (FOSSIL)
- ruzhencevi, Parabactrites ruzhencevi Shimanskiy, 1948 † - (PARABACTRITIDAE) (FOSSIL)
- ruzhencevi, Paratumaroceras ruzhencevi Kutygin, 2003 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- ruzhencevi, Propopanoceras ruzhencevi Glenister & Furnish, 1961 † - (POPANOCERATIDAE) (FOSSIL)
- ruzhencevi, Paprothites ruzhencevi W. Korn & Weyer, 2003 † - (PSEUDARIETITIDAE) (FOSSIL)
- ruzickai, Kosorodiscus ruzickai Horný, 2005 † - (TROPIDODISCIDAE) (FOSSIL)
- ruzickai, Asinomphalus ruzickai Horný, 1992 † - (TYCHOBRAHEIDAE) (FOSSIL)
- ryalea, Odostomia ryalea P. Bartsch, 1927 - (PYRAMIDELLIDAE)
- ryalli, Engina ryalli E. Rolán & F. Fernandes, 1995 - (BUCCINIDAE)
- ryalli, Anachis ryalli E. Rolán, 2005 - (COLUMBELLIDAE)
- ryalli, Haedropleura ryalli J. Horro, S. Gori & E. Rolán, 2010 - (HORAICLAVIDAE)
- ryalli, Volvarina ryalli F. Boyer, 2006 - (MARGINELLIDAE)
- ryalli, Pterotyphis ryalli R. Houart, 1996 - (MURICIDAE)
- ryalli, Takia saharicus ryalli R. Houart, 1993 - (MURICIDAE)
- ryalli, Natica ryalli F. Fernandes & E. Rolán, 1992 - (NATICIDAE)
- ryalli, Nisiturris ryalli (A. Peñas & E. Rolán, 1997) - (PYRAMIDELLIDAE)
- ryalli, Chrysallida ryalli A. Peñas & E. Rolán, 2002 - (PYRAMIDELLIDAE)
- ryalli, Turbonilla ryalli A. Peñas & E. Rolán, 1997 - syn of: Nisiturris ryalli (A. Peñas & E. Rolán, 1997) - (PYRAMIDELLIDAE)
- ryalli, Atlantella ryalli M. Huber, A. Langleit & K. Kreipl, 2015 - (TELLINIDAE)
- ryalli, Tibetites ryalli Mojsisovics, 1896 † - (TIBETITIDAE) (FOSSIL)
- ryalli, Tornus ryalli E. Rolán & F. Rubio, 2002 - (TORNIDAE)
- ryalli, Circulus ryalli P.G. Oliver & E. Rolán, 2011 - (TORNIDAE)
- ryalli, Plicoliva ryalli P. Bouchet, 1989 - (VOLUTIDAE)
- ryani, Rapturella ryani R.B. Salvador & C.M. Cunha, 2016 - (ACTEONIDAE)
- ryani, Oliva ryani E.J. Petuch, 1994 † - (OLIVIDAE) (FOSSIL)
- rycia, Polycera rycia Er. Marcus & Ev. Marcus, 1970 - (POLYCERIDAE)
- ryckholti, Cyclas ryckholti N.A.J. Normand, 1844 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- ryckholtiana, Pleurotomaria ryckholtiana de Koninck, 1844 † - syn of: Sasakiela ryckholtiana (de Koninck, 1844 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- ryckholtiana, Sasakiela ryckholtiana (de Koninck, 1844 †) - (PORCELLIIDAE) (FOSSIL)
- ryckholtii mucronulata, Cyclas ryckholtii mucronulata A. Moquin-Tandon, 1855 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- ryclea, Evalea ryclea (P. Bartsch, 1927) - (PYRAMIDELLIDAE)
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