- rasa, Bearizia rasa (K. Martin, 1914 †) - (ANCILLARIIDAE) (FOSSIL)
- rasa, Ovalitheca rasa A.V. Sysoev, 1968 † - (TCHURANITHECIDAE) (FOSSIL)
- Rasama, Genus Rasama F.F. Laidlaw, 1932 (HELICARIONIDAE)
- Rasatomaria, Genus Rasatomaria Pieroni & Nόtzel, 2014 (PLEUROTOMARIIDAE) (FOSSIL)
- Rasbittium, syn of: Genus Bittium W.E. Leach in J.E. Gray, 1847 (CERITHIIDAE)
- rascana, Herilla ziegleri rascana (A.J. Wagner, 1919) - (CLAUSILIIDAE)
- raschkovensis, Parvulites raschkovensis Lyashenko, 1969 † - (TURMALITIDAE) (FOSSIL)
- rasenensis, Parainoceramya rasenensis (C.H. Blake, 1880 †) - (INOCERAMIDAE) (FOSSIL)
- rasenensis, Rostellaria rasenensis J.F. Blake, 1875 † - (ROSTELLARIIDAE) (FOSSIL)
- Rasenia, Genus Rasenia Mesezhnikov, 1969 (AULACOSTEPHANIDAE) (FOSSIL)
- Rasenioides, Subgenus Rasenia (Rasenioides) Mesezhnikov, 1984 (AULACOSTEPHANIDAE) (FOSSIL)
- Rasenoides, syn of: Subgenus Rasenia (Rasenioides) Mesezhnikov, 1984 (AULACOSTEPHANIDAE) (FOSSIL)
- rasettii, Protoconchioides rasettii D. Geyer, 1994 † - (PROTOCONCHOIDIDAE) (FOSSIL)
- rasgradense, Tropaeum rasgradense Nikolov & Breskovski, 1978 † - (ANCYLOCERATIDAE) (FOSSIL)
- rasgradi, Ancyloceras rasgradi F. Toula, 1892 † - syn of: Emericiceras rasgradi (F. Toula, 1892 †) - (ANCYLOCERATIDAE) (FOSSIL)
- rasgradi, Emericiceras rasgradi (F. Toula, 1892 †) - (EMERICICERATIDAE) (FOSSIL)
- rashafuni, Persicula rashafuni L. Bozzetti, 1993 - (CYSTISCIDAE)
- rashidi, Thyasira rashidi Abbass, 1972 † - (THYASIRIDAE) (FOSSIL)
- rashkovense, Subormoceras rashkovense (Kiselev, 1968 †) - (PSEUDORTHOCERATIDAE) (FOSSIL)
- rashleighana, Ovatipsa rashleighana (J.C. Melvill, 1888) - (CYPRAEIDAE)
- rashleighana, Cypraea rashleighana J.C. Melvill, 1888 - syn of: Ovatipsa rashleighana (J.C. Melvill, 1888) - (CYPRAEIDAE)
- rashleighana eunota, Talostolida rashleighana eunota J.W. Taylor, 1916 - syn of: Ovatipsa rashleighana (J.C. Melvill, 1888) - (CYPRAEIDAE)
- rashleighana pseudoteres, Ovatipsa rashleighana pseudoteres (F.Jr. Lorenz & J.P. Barbier, 1992) - (CYPRAEIDAE)
- rashleighana pseudoteres, Blasicrura rashleighana pseudoteres F.Jr. Lorenz & J.P. Barbier, 1992 - syn of: Ovatipsa rashleighana pseudoteres (F.Jr. Lorenz & J.P. Barbier, 1992) - (CYPRAEIDAE)
- Rasia, syn of: Genus Anadara J.E. Gray, 1847 (ARCIDAE)
- rasile, Megalytoceras rasile Vacek, 1886 † - (LYTOCERATIDAE) (FOSSIL)
- rasilis, Gari rasilis (J.C. Melvill & R. Standen, 1899) - (PSAMMOBIIDAE)
- rasilis, Anolcites rasilis Tozer, 1994 † - (TRACHYCERATIDAE) (FOSSIL)
- rasilistoma, Tudivasum rasilistoma (R.T. Abbott, 1959) - (TURBINELLIDAE)
- rasini, Meyrargueria rasini (H. Girardi, 2003) - (HYDROBIIDAE)
- rasini, Bythiospeum rasini H. Girardi, 2003 - syn of: Meyrargueria rasini (H. Girardi, 2003) - (HYDROBIIDAE)
- raskovici, Pyrgula raskovici P.S. Pavlovic, 1903 † - (HYDROBIIDAE) (FOSSIL)
- rasmusseni, Tehamatea rasmusseni Hryniewicz & al., 2014 † - (LUCINIDAE) (FOSSIL)
- rasmusseni, Vatopsis rasmusseni Schnetler, 2001 † - (NEWTONIELLIDAE) (FOSSIL)
- rasmusseni, Ambozone rasmusseni Batten, 1972 † - (TURBINIDAE) (FOSSIL)
- Rasmussenoceras, Genus Rasmussenoceras Foerste, 1932 (TRIPTEROCERATIDAE) (FOSSIL)
- rasnasraniensis, Cypraea pantherina rasnasraniensis E.L. Heiman & H.K. Mienis, 2001 - (CYPRAEIDAE)
- rasoarinoroae, Paladmete rasoarinoroae S. Kiel, 2006 † - (CANCELLARIIDAE) (FOSSIL)
- rasolia, Columbella rasolia P.L. Duclos, 1840 - syn of: Euplica scripta (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- rasori, Gervillia rasori Stoyanow, 1949 † - (MYALINIDAE) (FOSSIL)
- rasotia, Columbella rasotia P.L. Duclos, 1840 - syn of: Euplica scripta (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- rasotia, Euplica rasotia P.L. Duclos, 1835 - syn of: Euplica scripta (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- raspaili, Barremites raspaili Kilian, 1913 † - syn of: Raspailiceras cassida (Raspail, 1830 †) - (BARREMITIDAE) (FOSSIL)
- raspaili, Calliomphalus raspaili Renard, 1994 † - (CALLIOTROPIDAE) (FOSSIL)
- raspaili, Eotetragonites raspaili Breistroffer, 1947 † - (GAUDRYCERATIDAE) (FOSSIL)
- raspaili, Tacheocampylaea raspaili (B.C.M. Payraudeau, 1826) - (HELICIDAE)
- Raspailiceras, Subgenus Barremites (Raspailiceras) Kilian, 1913 (BARREMITIDAE) (FOSSIL)
- Raspailites, Genus Raspailites Jeannet , 1951 (ASPIDOCERATIDAE) (FOSSIL)
- rasseri, Discus rasseri M. Harzhauser, T.A. Neubauer & E. Georgopoulou, 2014 † - (DISCIDAE) (FOSSIL)
- rasseri, Gyraulus rasseri T.A. Neubauer & al., 2014 - (PLANORBIDAE)
- rassierensis, Anachis rassierensis K.R. Smythe, 1985 - syn of: Anachis fauroti (F.P. Jousseaume, 1888) - (COLUMBELLIDAE)
- rassina, Propebela rassina (W.H. Dall, 1919) - (MANGELIIDAE)
- rassina, Lora rassina W.H. Dall, 1919 - syn of: Propebela rassina (W.H. Dall, 1919) - (TURRIDAE)
- rassochaensis, Arctomytiloides rassochaensis (Polubotko, 1968 †) - (INOCERAMIDAE) (FOSSIL)
- Rasta, Genus Rasta J.D. Taylor & E.A. Glover, 2000 (LUCINIDAE)
- rastellaris, Arctostrea rastellaris (Münster, 1833 †) - (ARCTOSTREIDAE) (FOSSIL)
- rastellinum, Pecten rastellinum A. Valenciennes, 1846 - syn of: Chlamys hastata (G.B. II Sowerby, 1842) - (PECTINIDAE)
- Rastellum, Genus Rastellum Faujas-St.-Fond, 1799 (OSTREIDAE) (FOSSIL)
- rastellum, Mirapecten rastellum (J.B.P.A. Lamarck, 1819) - (PECTINIDAE)
- rastellum, Tellina rastellum S.C.T. Hanley, 1844 - syn of: Tellina philippii H.E. Anton, 1844 - (TELLINIDAE)
- rastli, Miltites rastli Mojsisovics, 1893 † - (HALORITIDAE) (FOSSIL)
- Rastodens, Genus Rastodens W.F. Ponder, 1966 (RASTODENTIDAE)
- RASTODENTIDAE Ponder, 1966 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-CINGULOPSOIDEA [Superfamily])
- rastridens, Gadila rastridens (R.B. Watson, 1879) - (GADILIDAE)
- rastrum, Cardium rastrum L.A. Reeve, 1845 - syn of: Dallocardia senticosum (Sowerby, 1833) - (CARDIIDAE)
- rastrum, Dendropoma rastrum (O.A.L. Mörch, 1861) - (VERMETIDAE)
- rastrum, Dendropoma rastrum O.A.L. Mörch, 1861 - syn of: Dendropoma rastrum (O.A.L. Mörch, 1861) - (VERMETIDAE)
- rata, Climocella rata J.F. Goulstone, 1996 - (CHAROPIDAE)
- rata, Ithycythara maera rata A.A. Olsson & A. Harbison, 1953 † - (MANGELIIDAE) (FOSSIL)
- rateginensis, Ancistrolepis rateginensis Titova, 1993 † - (BUCCINIDAE) (FOSSIL)
- rateginensis, Merriamella rateginensis Titova, 1994 † - (PTEROTHECIDAE) (FOSSIL)
- rateranus, Ortizius rateranus (G. Servain, 1880) - (OXYCHILIDAE)
- rathbunasteri, Asterophila rathbunasteri A. Warén in A. Warén & L.M. Lewis, 1994 - (EULIMIDAE)
- rathbuni, Cocculina rathbuni W.H. Dall, 1882 - (COCCULINIDAE)
- rathbuni, Panopea rathbuni White, 1887 † - (HIATELLIDAE) (FOSSIL)
- rathbuni, Acesta rathbuni (P. Bartsch, 1913) - (LIMIDAE)
- rathbuni, Lima rathbuni P. Bartsch, 1913 - syn of: Acesta rathbuni (P. Bartsch, 1913) - (LIMIDAE)
- rathbuni, Oenopota rathbuni (A.E. Verrill, 1884) - (MANGELIIDAE)
- rathbuni, Gaza rathbuni W.H. Dall, 1890 - (MARGARITIDAE)
- rathbuni, Turbonilla rathbuni A.E. Verrill & S. Smith in A.E. Verrill, 1880 - (PYRAMIDELLIDAE)
- rathbuni, Toechomya rathbuni A.H. Clarke, 1904 † - (TRIGONIIDA (UNASSIGNED)) (FOSSIL)
- rathbuni, Mesalia rathbuni C.J. Maury, 1934 † - (TURRITELLIDAE) (FOSSIL)
- rathi, Rotopericyclus rathi D. Korn & al., 2010 † - (ROTOPERICYCLIDAE) (FOSSIL)
- rathieri, Myoconcha rathieri d'Orbigny, 1850 † - (KALENTERIDAE) (FOSSIL)
- rathieri, Athleta rathieri (Hebert, 1849 †) - (VOLUTIDAE) (FOSSIL)
- rathieriana, Myoconcha rathieriana d'Orbigny, 1850 † - syn of: Myoconcha rathieri d'Orbigny, 1850 † - (KALENTERIDAE) (FOSSIL)
- rathieriana, Ditremaria rathieriana (A.V.M.D. D'Orbigny, 1850 †) - (TROCHOTOMIDAE) (FOSSIL)
- rathieriana, Trochotoma rathieriana A.V.M.D. D'Orbigny, 1850 † - syn of: Ditremaria rathieriana (A.V.M.D. D'Orbigny, 1850 †) - (TROCHOTOMIDAE) (FOSSIL)
- Rathouisia, Genus Rathouisia P.M. Heude, 1883 (RATHOUISIIDAE)
- rathouisianus, Chamalycaeus rathouisianus (P.M. Heude, 1882) - (CYCLOPHORIDAE)
- rathouisii, Euplecta rathouisii (P.M. Heude, 1880) - (ARIOPHANTIDAE)
- rathouisii, Tengchiena rathouisii (P.M. Heude, 1874) - (EUCONULIDAE)
- RATHOUISIIDAE Heude, 1855 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-SYSTELLOMMATOPHORA [Order]-VERONICELLOIDEA [Superfamily])
- rathousiana, Corbicula rathousiana P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- rathymos, Epiphragmophora rathymos E.L. Holmberg, 1912 - (EPIPHRAGMOPHORIDAE)
- rathymus, Potomida rathymus J.R. Bourguignat in É.A.A. Locard, 1882 - syn of: Potomida littoralis (G.L.C.F.D. Cuvier, 1798) - (UNIONIDAE)
- ratidota, Coelatura ratidota (Charmes, 1885) - (UNIONIDAE)
- RatiFusinus, syn of: Genus Pisania Ant. Bivona-Bernardi, 1832 (BUCCINIDAE)
- Ratifusus, syn of: Genus Cumia Ant. Bivona-Bernardi, 1838 (COLUBRARIIDAE)
- ratisukunai, Turbonilla ratisukunai A. Peñas & E. Rolán, 2010 - syn of: Turbonilla ratusukunai A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- ratna, Thuridilla ratna Er. Marcus, 1965 - syn of: Thuridilla gracilis (J.J. Risbec, 1928) - (PLAKOBRANCHIDAE)
- Ratnadvipia, Genus Ratnadvipia H.H. Godwin-Austen, 1899 (ARIOPHANTIDAE)
- ratoi, Chama ratoi P.H. Boshoff, 1965 - syn of: Chama croceata J.B.P.A. Lamarck, 1819 - (CHAMIDAE)
- ratonensis, Mytiloides ratonensis Walaszczyk & Cobban, 2000 † - (INOCERAMIDAE) (FOSSIL)
- ratschensis, Hamulina astieriana ratschensis Eristavi, 1955 † - (HAMULINIDAE) (FOSSIL)
- ratshensis, Colchidites ratshensis Rouchadze, 1933 † - (ANCYLOCERATIDAE) (FOSSIL)
- ratshensis kopetdaghensis, Colchidites ratshensis kopetdaghensis Tovbina, 1963 † - (ANCYLOCERATIDAE) (FOSSIL)
- rattei, Mekongia rattei J.C.H. Crosse & P.H. Fischer, 1876 - (VIVIPARIDAE)
- ratti, Mekongia ratti J.C.H. Crosse & P.H. Fischer, 1876 - syn of: Mekongia rattei J.C.H. Crosse & P.H. Fischer, 1876 - (VIVIPARIDAE)
- rattonei, Cavolinia rattonei Simonelli, 1896 † - syn of: Cavolinia grandis L.M.D. Bellardi, 1873 † - (CAVOLINIIDAE) (FOSSIL)
- rattus, Rhizoconus rattus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- rattus, Trona stercoraria rattus (J.B.P.A. Lamarck, 1810) - (CYPRAEIDAE)
- ratua, Cassianopsis ratua J. Gründel, Keupp & H.G. Lang, 2015 † - (NERITOPSIDAE) (FOSSIL)
- ratum, Exochoceras ratum P.A. Zhuravleva, 1972 † - syn of: Chrysoceras tumidum (P.A. Zhuravleva, 1972 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- ratus, Unio ratus I. Lea, 1872 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- ratusukunai, Turbonilla ratusukunai A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- ratzingeri, Dentimargo ratzingeri T. Cossignani, 2006 - (MARGINELLIDAE)
- rauenorum, Trochus rauenorum S. Kiel & K. Bandel, 2004 † - (TROCHIDAE) (FOSSIL)
- rauffi, Cultrigera rauffi Böhm, 1891 † - (APORRHAIDAE) (FOSSIL)
- raui, Humptulipsia raui (Goedert & Kaler, 1996 †) - (ABYSSOCHRYSIDAE) (FOSSIL)
- raui, Holcolytoceras raui Wiedmann, 1970 † - (LYTOCERATIDAE) (FOSSIL)
- rauli, Amphithalamus rauli E. Rolán, 1991 - (ANABATHRIDAE)
- rauli, Horologica rauli E. Rolán & J. Espinosa, 1992 - (CERITHIOPSIDAE)
- rauli, Gibberula rauli F. Fernandes, 1987 - (CYSTISCIDAE)
- rauli, Favartia rauli (J. Espinosa, 1990) - (MURICIDAE)
- raulinea, Rostellaria raulinea Buvignier, 1852 † - (ROSTELLARIIDAE) (FOSSIL)
- raulini, Spirancilla raulini (M.A. Peyrot, 1925 †) - (ANCILLARIIDAE) (FOSSIL)
- raulini, Euthria raulini M.A. Peyrot, 1925 † - (BUCCINIDAE) (FOSSIL)
- raulini, Merica raulini (C. Mayer, 1848 †) - (CANCELLARIIDAE) (FOSSIL)
- raulini, Cerithium raulini J.P.S. Grateloup, 1840 † - (CERITHIIDAE) (FOSSIL)
- raulini, Corbula raulini A.E.M. Cossmann & M.A. Peyrot, 1909 † - (CORBULIDAE) (FOSSIL)
- raulini, Mitrolumna raulini M.A. Peyrot, 1928 † - (MITROMORPHIDAE) (FOSSIL)
- raulini, Charonia raulini (A.E.M. Cossmann & M.A. Peyrot, 1923 †) - (RANELLIDAE) (FOSSIL)
- raulini, Alvania raulini Cossmann & Peyrot, 1919 † - (RISSOIDAE) (FOSSIL)
- raulini, Monodonta raulini A.E.M. Cossmann & M.A. Peyrot, 1916 † - (TROCHIDAE) (FOSSIL)
- raulini ferelaevigatum, Cerithium raulini ferelaevigatum L. Vignal, 1910 † - (CERITHIIDAE) (FOSSIL)
- raulini??, Charonia raulini?? (A.E.M. Cossmann & M.A. Peyrot, 1923) - (RANELLIDAE)
- Raulinia, Genus Raulinia C. Mayer, 1864 (AMATHINIDAE)
- rauliniana, Gastrochaena rauliniana G.P. Deshayes, 1856 † - (GASTROCHAENIDAE) (FOSSIL)
- raulinianiforme, Epanisoceras raulinianiforme (Breistroffer, 1937 †) - (ANCYLOCERATIDAE) (FOSSIL)
- raulinianiforme, Epitropaeum raulinianiforme M. Collignon, 1962 † - (ANCYLOCERATIDAE) (FOSSIL)
- raulinianum, Amphidonte raulinianum (d'Orbigny 1847) † - (GRYPHAEIDAE) (FOSSIL)
- raulinianus, Otohoplites raulinianus (A.V.M.D. D'Orbigny, 1841 †) - (HOPLITIDAE) (FOSSIL)
- raulsilvai, Africonus raulsilvai (E. Rolán, A. Monteiro & C.P. Fernandes, 1998) - (CONIDAE)
- raunana, Gabrielona raunana H.S. Ladd, 1966 - (PHASIANELLIDAE)
- raunana goubini, Gabrielona raunana goubini R. Robertson, 1973 - (PHASIANELLIDAE)
- rauparaha, Eomonotis rauparaha J. Grant-Mackie, 1980 † - (MONOTIDAE) (FOSSIL)
- raupi, Pharcidoconcha raupi Pojeta & Gilbert-Tomlinson, 1977 † - (CYRTODONTIDAE) (FOSSIL)
- rauracum, Neoprionoceras rauracum (C. Mayer, 1864 †) - (OPPELIIDAE) (FOSSIL)
- rausanum, Buccinum pemphigus rausanum T. Shikama, 1957 - (BUCCINIDAE)
- rauscherti, Parabuccinum rauscherti M.G. Harasewych, Y.I. Kantor & K. Linse, 2000 - (BUCCINIDAE)
- rauserae, Zephyroceras rauserae Kullmann, 1962 † - (GLAPHYRITIDAE) (FOSSIL)
- rauserae, Paragastrioceras rauserae Ruzhentsev, 1956 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- rausiana, Heleobia rausiana P. Radoman, 1974 - syn of: Semisalsa stagnorum (J.F. Gmelin, 1791) - (COCHLIOPIDAE)
- rausicum, Buccinum rausicum T. Shikama, 1952 - (BUCCINIDAE)
- rava, Clathurella rava (R.B. Hinds, 1843) - (CLATHURELLIDAE)
- Ravana, Genus Ravana H.H. Godwin-Austen, 1901 (ARIOPHANTIDAE)
- ravanae, Ischnochiton ravanae E.R. Sykes, 1903 - syn of: Chiton hululensis (E.A. Smith, 1903) - (ISCHNOCHITONIDAE)
- ravanae, Perrottetia ravanae (W.T. Blanford, 1899) - (STREPTAXIDAE)
- ravella, Etrema ravella C. Hedley, 1922 - (CLATHURELLIDAE)
- raveneli, Astyris raveneli (W.H. Dall, 1889) - (COLUMBELLIDAE)
- raveneli, Columbella raveneli W.H. Dall, 1889 - syn of: Astyris raveneli (W.H. Dall, 1889) - (COLUMBELLIDAE)
- raveneli, Mitrella raveneli W.H. Dall, 1889 - syn of: Astyris raveneli (W.H. Dall, 1889) - (COLUMBELLIDAE)
- raveneli, Spisula raveneli (T.A. Conrad, 1832) - (MACTRIDAE)
- raveneli, Euvola raveneli W.H. Dall, 1898 - (PECTINIDAE)
- raveneli, Pecten raveneli (W.H. Dall, 1898) - syn of: Euvola raveneli W.H. Dall, 1898 - (PECTINIDAE)
- raveneli, Arcopagia raveneli T.A. Conrad, 1846 † - (TELLINIDAE) (FOSSIL)
- raveneli, Elliptio raveneli T.A. Conrad, 1834 - (UNIONIDAE)
- raveneliana, Ostrea raveneliana M. Tuomey & Holmes, 1855 † - (OSTREIDAE) (FOSSIL)
- raveneliana, Alasmidonta raveneliana I. Lea, 1834 - (UNIONIDAE)
- raveni, Cistulops raveni (J.C.H. Crosse, 1872) - (POMATIIDAE)
- raveni, Brachypodella raveni J.C.H. Crosse, 1872 - (UROCOPTIDAE)
- Ravenia, Subgenus Spiraxis (Ravenia) J.C.H. Crosse, 1873 (SPIRAXIDAE)
- ravergiensis, Helix ravergiensis A.E.J. Férussac, 1835 - syn of: Harmozica ravergiensis (A.E.J. Férussac, 1835) - (HELICIDAE)
- ravergiensis, Harmozica ravergiensis (A.E.J. Férussac, 1835) - (HYGROMIIDAE)
- ravergieri, Stenomphalia ravergieri (A.E.J. Férussac, 1835) - (HYGROMIIDAE)
- ravergieri transcaucasica, Stenomphalia ravergieri transcaucasica (A. Mousson, 1876) - (HYGROMIIDAE)
- ravergii, Helix ravergii A.E.J. Férussac, 1835 - syn of: Harmozica ravergiensis (A.E.J. Férussac, 1835) - (HELICIDAE)
- raveyensis, Transkeia raveyensis (R. Sturany, 1899) - (UNGULINIDAE)
- ravida, Acusta ravida (W.H. Benson, 1842) - (BRADYBAENIDAE)
- ravida, Nassa ravida A. Adams, 1852 - syn of: Nassarius splendidulus R.W. Dunker, 1846 - (NASSARIIDAE)
- ravida, Natica ravida L.F.A. Souleyet, 1852 - syn of: Polinices amiculatus (R.A. Philippi, 1849) - (NATICIDAE)
- ravida ravidella, Acusta ravida ravidella (O.F. von Möllendorff, 1899) - (BRADYBAENIDAE)
- ravida redfieldi, Acusta ravida redfieldi (L. Pfeiffer, 1852) - (BRADYBAENIDAE)
- ravidella, Acusta ravida ravidella (O.F. von Möllendorff, 1899) - (BRADYBAENIDAE)
- ravidum, Cerithium ravidum R.A. Philippi, 1849 - syn of: Cerithium rostratum A. Adams in G.B. II Sowerby, 1855 - (CERITHIIDAE)
- ravidus, Theobaldius ravidus (W.H. Benson, 1851) - (CYCLOPHORIDAE)
- ravidus, Nassarius stigmarius ravidus L.A. Reeve, 1853 - (NASSARIIDAE)
- ravidus, Polinices ravidus L.F.A. Souleyet, 1852 - syn of: Polinices amiculatus (R.A. Philippi, 1849) - (NATICIDAE)
- ravinamatia, Parvedentulina ravinamatia K.C. Emberton, 2002 - (STREPTAXIDAE)
- ravistella, Nephronaias ravistella (P.M.A. Morelet, 1849) - (UNIONIDAE)
- Ravitrona, syn of: Genus Monetaria F.H. Troschel, 1863 (CYPRAEIDAE)
- ravni, Kangilioptera ravni (Rosenkrantz, 1970 †) - (APORRHAIDAE) (FOSSIL)
- ravni, Eoatlanta ravni Schnetler, 2013 † - (ATLANTIDAE) (FOSSIL)
- ravni, Searlesia ravni Schnetler & Beyer, 1990 † - syn of: Searlesia dentifera G.J. Vermeij, 1991 † - (BUCCINIDAE) (FOSSIL)
- ravni, Retilaskeya ravni A. Nützel, 1998 † - (CERITHIOPSIDAE) (FOSSIL)
- ravni, Danoceras ravni Troedsson, 1926 † - (DIESTOCERATIDAE) (FOSSIL)
- ravni, Laternulina ravni Schnetler, 2001 † - (LATERNULIDAE) (FOSSIL)
- ravni, Modiolus ravni Lundgren, 1895 † - (MYTILIDAE) (FOSSIL)
- ravni, Cypraedia ravni (Schilder 1928 †) - (OVULIDAE) (FOSSIL)
- ravni, Solariella ravni Schnetler, 2001 † - (SOLARIELLIDAE) (FOSSIL)
- ravni, Felaniella ravni Glibert & van de Poel 1973 † - (UNGULINIDAE) (FOSSIL)
- Ravniella, Genus Ravniella Rosenkrantz, 1970 (ACTEONIDAE) (FOSSIL)
- ravnogorica, Bythinella ravnogorica P. Glöer & D.G. Georgiev, 2009 - (BYTHINELLIDAE)
- Ravnostomia, Genus Ravnostomia Adegoke, 1977 (OPISTHOBRANCHIA (UNASSIGNED)) (FOSSIL)
- ravoisieri, Unio ravoisieri G.P. Deshayes, 1847 - (UNIONIDAE)
- ravus, Conus ravus A.A. Gould, 1853 - syn of: Californiconus californicus (L.A. Reeve, 1844) - (CONIDAE)
- rawaiensis, Rhizoconus rawaiensis (A.J. Da Motta, 1978) - (CONIDAE)
- rawakiana, Acanthopleura rawakiana A. de Rochebrune, 1882 - syn of: Acanthopleura gemmata (H.M.D. de Blainville, 1825) - (CHITONIDAE)
- raweneli, Mitrella raweneli W.H. Dall, 1889 - syn of: Astyris raveneli (W.H. Dall, 1889) - (COLUMBELLIDAE)
- rawesi, Periglypta rawesi (Hislop, 1859 †) - (VENERIDAE) (FOSSIL)
- rawesi, Paludina rawesi Hislop, 1859 † - (VIVIPARIDAE) (FOSSIL)
- rawhiti, Hadopyrgus rawhiti M. Haase, 2008 - (HYDROBIIDAE)
- rawitensis, Austrodrillia rawitensis C. Hedley, 1922 - (HORAICLAVIDAE)
- rawnesleyi, Thersites rawnesleyi J.C. Cox, 1873 - (CAMAENIDAE)
- rawsoni, Pseudocrioceras rawsoni Ropolo & Gonnet, 1999 † - (ANCYLOCERATIDAE) (FOSSIL)
- rawsoni, Pollia rawsoni (J.C. Melvill, 1897) - (BUCCINIDAE)
- rawsoni, Drymaeus rawsoni (R.J.L. Guppy, 1871) - (BULIMULIDAE)
- rawsoni, Calliostoma rawsoni W.H. Dall, 1889 - syn of: Calliostoma jujubinum (J.F. Gmelin, 1791) - (CALLIOSTOMATIDAE)
- rawsoni, Cerithium rawsoni O.A.L. Mörch, 1876 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (CERITHIIDAE)
- rawsoni, Helicina rawsoni (L. Pfeiffer, 1867) - (HELICINIDAE)
- rawsoni, Heteroceras rawsoni Delanoy & J.J. Bert, 2006 † - (HETEROCERATIDAE) (FOSSIL)
- rawsoni, Morula rawsoni J.C. Melvill, 1897 - (MURICIDAE)
- rawsoni, Pseudomyophorella rawsoni D.P. Kelly † - (MYOPHORELLIDAE) (FOSSIL)
- rawsoni, Polyptychites rawsoni Alsen, 2006 † - (POLYPTYCHITIDAE) (FOSSIL)
- rawsoni, Chondropoma rawsoni L. Pfeiffer, 1867 - (POMATIIDAE)
- rawsoni, Pyrazus rawsoni O.A.L. Mörch, 1876 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (POTAMIDIDAE)
- raxae, Orcula dolium raxae E. Gittenberger, 1978 - (ORCULIDAE)
- raybaudii, Zoila marginata raybaudii F.Jr. Lorenz, 1992 - (CYPRAEIDAE)
- raybaudii, Comitas raybaudii L. Bozzetti, 1994 - (PSEUDOMELATOMIDAE)
- raybaudii, Conomurex decorus raybaudii K. Nicolay & E. Romagna-Manoja, 1983 - (STROMBIDAE)
- raybaudii, Cinguloterebra raybaudii (U. Aubry, 1993) - (TEREBRIDAE)
- rayensis, Bythinella rayensis E. Caziot, 1910 - syn of: Belgrandiella saxatilis (P. de Reyniés, 1844) - (BYTHINELLIDAE)
- rayensis, Belgrandiella rayensis E. Caziot, 1910 - syn of: Belgrandiella saxatilis (P. de Reyniés, 1844) - (HYDROBIIDAE)
- rayi, Spiralix rayi (É.A.A. Locard, 1883) - (MOITESSIERIIDAE)
- rayi, Opisthosiphon rayi C. de la Torre & P. Bartsch - (POMATIIDAE)
- rayi, Unio rayi J.R. Bourguignat, 1882 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- rayiana, Balea rayiana J.R. Bourguignat, 1857 - syn of: Balea perversa (C. Linnaeus, 1758) - (CLAUSILIIDAE)
- rayianum, Obscurella rayianum J.R. Bourguignat, 1860 - syn of: Cochlostoma obscurum (J.P.R. Draparnaud, 1801) - (COCHLOSTOMATIDAE)
- rayianum, Carychium rayianum J.R. Bourguignat, 1857 - syn of: Carychium minimum O.F. Müller, 1774 - (ELLOBIIDAE)
- raylenea, Wallowaconcha raylenea Yancey & Stanley, 1999 † - (WALLOWACONCHIDAE) (FOSSIL)
- raymondi, Arcochiton raymondi Hoare & Sturgeon, 1976 † - (ACUTICHITONIDAE) (FOSSIL)
- raymondi, Bulimus raymondi J.R. Bourguignat, 1863 - (BULIMULIDAE)
- raymondi, Coreospira raymondi Shaw, 1957 † - (COREOSPIRIDAE) (FOSSIL)
- raymondi, Endoceras raymondi Flower, 1958 † - (ENDOCERATIDAE) (FOSSIL)
- raymondi, Eulima raymondi J.J. Rivers, 1904 - (EULIMIDAE)
- raymondi, Glaphyrites raymondi Plummer & P.H. Scott, 1937 † - (GLAPHYRITIDAE) (FOSSIL)
- raymondi, Maurohelix raymondi (A. Moquin-Tandon, 1848) - (HELICIDAE)
- raymondi, Evencoceras raymondi Gil, 1988 † - (INTEJOCERATIDAE) (FOSSIL)
- raymondi, Leurocycloceras raymondi Foerste, 1928 † - (KIONOCERATIDAE) (FOSSIL)
- raymondi, Cyanoplax dentiens raymondi (H.A. Pilsbry, 1894) - (LEPIDOCHITONIDAE)
- raymondi, Nodulotrophon raymondi (C.L. Moody, 1916) - (MURICIDAE)
- raymondi, Orcula raymondi J.R. Bourguignat, 1863 - (ORCULIDAE)
- raymondi, Aequipecten raymondi T.A. Conrad, 1857 † - syn of: Leptopecten discus (T.A. Conrad, 1857 †) - (PECTINIDAE) (FOSSIL)
- raymondi, Ancylus raymondi J.R. Bourguignat, 1853 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- raymondi, Prodentalium raymondi A.T. Young, 1942 † - (PRODENTALIIDAE) (FOSSIL)
- raymondi, Turbonilla raymondi W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- raymondi, Sphaerium raymondi J.G. Cooper, 1892 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- raymondi, Cyrtospira raymondi Hudson, 1905 † - (SUBULITIDAE) (FOSSIL)
- raymondi, Trachydomia raymondi Sturgeon, 1964 † - (TRACHYSPIRIDAE) (FOSSIL)
- raymondi, Astraea raymondi Clark, 1918 - syn of: Pomaulax biangulata W.M. Gabb, 1866 - (TURBINIDAE)
- Raymondiceras, Subgenus Cheiloceras (Raymondiceras) Munster, 1839 (CHEILOCERATIDAE) (FOSSIL)
- raymondoi, Anodonta raymondoi J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- raymondrobertsi, Pseudozonaria raymondrobertsi (H.A. Pilsbry, 1922 †) - (CYPRAEIDAE) (FOSSIL)
- raynali, Ougapia raynali (J. Gassies, 1865) - (RHYTIDIDAE)
- raynaudi, Anisoceras raynaudi Boule & al., 1907 † - (ANISOCERATIDAE) (FOSSIL)
- raynaudi, Euaspidoceras raynaudi Bonnot, 1996 † - (ASPIDOCERATIDAE) (FOSSIL)
- raynaudiana, Natica raynaudiana C.A. Récluz, 1843 - syn of: Natica arachnoidea (J.F. Gmelin, 1791) - (NATICIDAE)
- rayneri, Kochia rayneri E.M. Fletcher, 1975 † - (KOCHIIDAE) (FOSSIL)
- raynevaliana, Ena frivaldskii raynevaliana (J.R. Bourguignat, 1855) - (ENIDAE)
- raynevalianus, Bulimus raynevalianus J.R. Bourguignat - syn of: Meijeriella frivaldskyi (L. Pfeiffer, 1847) - (BULIMULIDAE)
- raynoldiana, Natica raynoldiana C.A. Récluz, 1843 - syn of: Natica arachnoidea (J.F. Gmelin, 1791) - (NATICIDAE)
- Rayonnoceras, Genus Rayonnoceras Croneis, 1926 (CARBACTINOCERATIDAE) (FOSSIL)
- rayopsis, Anodonta rayopsis G. Servain, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- raysummersi, Purpuradusta hammondae raysummersi F.A. Schilder, 1960 - (CYPRAEIDAE)
- raysutana, Anachis raysutana K.R. Smythe, 1985 - (COLUMBELLIDAE)
- raywalkeri, Zoila raywalkeri F.Jr. Lorenz, 2011 - (CYPRAEIDAE)
- raywalkeri, Dermomurex raywalkeri R. Houart, 1986 - (MURICIDAE)
- raywalkeri, Notopeplum raywalkeri H. Morrison, 2013 - (VOLUTIDAE)
- razafyi, Gulella razafyi K.C. Emberton, 2001 - (STREPTAXIDAE)
- razai, Kohaticeras razai Fatmi & Hölder, 1975 † - (HILDOCERATIDAE) (FOSSIL)
- razamola, Oliva razamola P.L. Duclos, 1835 - syn of: Olivella volutella (J.B.P.A. Lamarck, 1811) - (OLIVIDAE)
- razavii, Protocardia razavii Repin, 2013 † - (CARDIIDAE) (FOSSIL)
- razelmiana, Pseudamnicola razelmiana A.V. Grossu, 1986 - (HYDROBIIDAE)
- razetoi, Agaronia razetoi G.L. Terzer, 1992 - (OLIVIDAE)
- razlogi, Helicella razlogi (I. Pintér, 1969) - (HYGROMIIDAE)
- razumowskajae, Metalegoceras sogurense razumowskajae (Voinova, 1934 †) - (METALEGOCERATIDAE) (FOSSIL)
- reachensis, Inoceramus crippsi reachensis Etheridge † - (INOCERAMIDAE) (FOSSIL)
- readi, Japonites readi Tozer, 1994 † - (GYMNITIDAE) (FOSSIL)
- reagani, Portlandella reagani (W.H. Dall †) - (NUCULANIDAE) (FOSSIL)
- realejoensis, Turbonilla realejoensis L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- realensis, Microceramus realensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Realia, syn of: Genus Liarea L. Pfeiffer, 1853 (LIAREIDAE)
- reamensis, Besla reamensis E. Saurin, 1962 - (PYRAMIDELLIDAE)
- reaseri, Quitmaniceras reaseri Powell, 1963 † - (ACANTHOCERATIDAE) (FOSSIL)
- reatina, Pauluccinella reatina C. Stella, 1961 - syn of: Pauluccinella minima (M. Paulucci, 1881) - (HYDROBIIDAE)
- reaumuriana, Lavigno reaumuriana C.A. Récluz in J.C. Chenu, 1845 - syn of: Scrobicularia plana (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
- reayi, Pisotrigonia reayi (Fleming, 1987 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- rebainsi, Neopilina rebainsi L.I. Moskalev, Y.I. Starobogatov & Z.A. Filatova, 1983 - (NEOPILINIDAE)
- rebecca, Wairarapa rebecca P. Vella, 1954 † - (DRILLIIDAE) (FOSSIL)
- rebeccae, Janolus rebeccae M. Schrödl, 1996 - (PROCTONOTIDAE)
- rebeccaense, Dentalium rebeccaense J. Henderson, 1920 - syn of: Paradentalium americanum (J.C. Chenu, 1843) - (DENTALIIDAE)
- Rebeccapecten, Genus Rebeccapecten Ward , 1992 (PECTINIDAE) (FOSSIL)
- rebeli, Albinaria rebeli A.J. Wagner, 1924 - (CLAUSILIIDAE)
- rebeli, Mentissella rebeli (R. Sturany, 1897) - (CLAUSILIIDAE)
- rebelle, Cyrtactinoceras rebelle (Barrande, 1866 †) - (PROTEOCERATIDAE) (FOSSIL)
- rebellis, Algerina rebellis (Barrande, 1881 †) - (SPANILIDAE) (FOSSIL)
- rebenacqensis, Palaospeum bessoni rebenacqensis H.D. Boeters & A. Bertrand, 2001 - (MOITESSIERIIDAE)
- rebiana, Xeroleuca rebiana P.M. Pallary, 1913 - (HYGROMIIDAE)
- rebillyi, Eocrioceratites rebillyi (M. Collignon, 1962 †) - (HIMANTOCERATIDAE) (FOSSIL)
- rebjongensis, Leucotina rebjongensis E. Robba, 2013 † - (AMATHINIDAE) (FOSSIL)
- rebjongensis, Koloonella rebjongensis E. Robba, 2013 † - (MURCHISONELLIDAE) (FOSSIL)
- rebjongensis, Asmunda rebjongensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- rebjongensis, Strioturbonilla rebjongensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- rebjongensis, Costosyrnola rebjongensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- Rebmanniella, syn of: Genus Limicolariopsis d'Ailly, 1910 (ACHATINIDAE)
- reborai, Protoginella reborai T. Cossignani, 2011 - (MARGINELLIDAE)
- reboudi, Pupoides reboudi J.R. Bourguignat, 1876 - syn of: Pupoides coenopictus (F.W. Hutton, 1834) - (PUPILLIDAE)
- reboudiana, Xerosecta reboudiana (J.R. Bourguignat, 1863) - (HYGROMIIDAE)
- reboudiana, Albea reboudiana (O. Böttger, 1863) - (SPHINCTEROCHILIDAE)
- reboudii, Clausilia rugosa reboudii D. Dupuy, 1850 - (CLAUSILIIDAE)
- rebouleti, Gassendiceras rebouleti J.J. Bert & al., 2013 † - (HEMIHOPLITIDAE) (FOSSIL)
- rebouli, Uhligella rebouli Jacob, 1908 † - (DESMOCERATIDAE) (FOSSIL)
- rebouli, Acanthodiscus rebouli (Kilian †) - (NEOCOMITIDAE) (FOSSIL)
- rebouli, Trigonia rebouli Henry, 1876 † - (TRIGONIIDAE) (FOSSIL)
- reburrus, Orthrozanclus reburrus S. Conway Morris & Caron, 2007 † - (ORTHROZANCLIDAE) (FOSSIL)
- rebus, Pinufius rebus Er. Marcus & Ev. Marcus, 1960 - (PINUFIIDAE)
- Rebusum, Genus Rebusum Gregorio, 1930 (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- recalvum, Pisidium subtruncatum recalvum J.G.J. Kuiper, 1960 - (SPHAERIIDAE)
- recapitula, Cratis recapitula (C. Hedley, 1906) - (PHILOBRYIDAE)
- recava, Biomphalopa recava (C. Hedley, 1912) - (CHAROPIDAE)
- recavus, Diadelochiton recavus Hoare, 2002 † - (HELMINTHOCHITONIDAE) (FOSSIL)
- recedens, Drymaeus recedens (L. Pfeiffer, 1864) - (BULIMULIDAE)
- recedens, Sumelia recedens (L. Németh & M. Szekeres, 1995) - (CLAUSILIIDAE)
- recedens, Formosanella recedens (O. Böttger & P.B. Schmacker, 1894.) - (CLAUSILIIDAE)
- recedens, Libera recedens A. Garrett, 1884 - (ENDODONTIDAE)
- recedens, Poleumita recedens J. Perner, 1903 † - syn of: Oriostoma recedens (J. Perner, 1903 †) - (EUOMPHALIDAE) (FOSSIL)
- recedens, Oriostoma recedens (J. Perner, 1903 †) - (ORIOSTOMATIDAE) (FOSSIL)
- recens, Pisinna rugosa recens (W.F. Ponder, 1968) - (ANABATHRIDAE)
- recens, Aeneator recens (R.K. Dell, 1951) - (BUCCINIDAE)
- recens, Brachyptychia recens (P.V. Gredler, 1894.) - (CLAUSILIIDAE)
- recens, Siphonochelus recens F. Nordsieck, 1972 - syn of: Typhinellus labiatus (G.J. De Cristofori & G. Jan, 1832) - (MURICIDAE)
- recens, Solamen recens (R. Tate, 1897) - (MYTILIDAE)
- recens, Linucula recens R.K. Dell, 1956 - (NUCULIDAE)
- recens, Taranis nexilis recens (C.A. Fleming, 1948) - (RAPHITOMIDAE)
- recens, Botelloides ludbrookae recens W.F. Ponder, 1985 - (TROCHIDAE)
- recens, Bolma recens (R.K. Dell, 1967) - (TURBINIDAE)
- recens, Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- recens, Venus recens H.S. Holten, 1802 - syn of: Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- recens marmorata, Marcia recens marmorata (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- recentis, Gyronites recentis Tozer, 1994 † - (PROPTYCHITIDAE) (FOSSIL)
- receptoria, Kermia receptoria (J.C. Melvill & R. Standen, 1901) - (RAPHITOMIDAE)
- recessa, Microsveltia recessa T. Iredale, 1925 - (CANCELLARIIDAE)
- recessa, Cerion recessa (C.J. Maynard & W.F. Clapp, 1919) - (CERIONIDAE)
- rechifora, Leiosolenus rechifora (Itoigawa 1955) † - (MYTILIDAE) (FOSSIL)
- rechingeri, Albinaria rechingeri O.E. Paget, 1971 - (CLAUSILIIDAE)
- rechingeri, Assyriella rechingeri (A. Fuchs & F. Käufel, 1936) - (HELICIDAE)
- rechonchuda, Anachis rechonchuda Lima & Guimarães, 2015 - (COLUMBELLIDAE)
- recidivus, Nassarius recidivus (E.C. Von Martens, 1876) - (NASSARIIDAE)
- recifensis, Daphnella recifensis K.H. Barnard, 1958 - (RAPHITOMIDAE)
- Recilites, Genus Recilites Marek , 1967 (PAUXILLITIDAE) (FOSSIL)
- reciproca, Tomopleura reciproca (A.A. Gould, 1860) - (BORSONIIDAE)
- recisa, Succinea recisa P.M.A. Morelet, 1851 - (SUCCINEIDAE)
- recisum, Chaetoderma recisum (G. Schwabl, 1963) - (CHAETODERMATIDAE)
- recisus, Joculator recisus A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- Reclasta, syn of: Genus Naesiotus J.A. Albers, 1850 (BULIMULIDAE)
- reclina, Zebina reclina W.J. Sleurs, 1991 - (ZEBINIDAE)
- reclinans, Sonninia reclinans Buckman † - (SONNINIIDAE) (FOSSIL)
- reclinata, Eulima reclinata A. Adams, 1861 - (EULIMIDAE)
- reclinatum, Cyrtolites reclinatum Trueman & Williams † - (CYRTOLITIDAE) (FOSSIL)
- reclinatum, Winnipegoceras reclinatum (Troedsson, 1926 †) - (WESTONOCERATIDAE) (FOSSIL)
- reclivata, Neritina usnea reclivata T. Say, 1822 - (NERITIDAE)
- reclusa, Semicassis reclusa R.J.L. Guppy, 1873 † - (CASSIDAE) (FOSSIL)
- reclusa, Galatea reclusa Favanne, 1780 - syn of: Galatea paradoxa (I. von Born, 1780) - (DONACIDAE)
- reclusa, Oliva reclusa F.P. Marrat, 1871 - (OLIVIDAE)
- reclusa, Tellina reclusa (W.H. Dall, 1900) - (TELLINIDAE)
- reclusa, Merisca reclusa W.H. Dall, 1900 - syn of: Tellina reclusa (W.H. Dall, 1900) - (TELLINIDAE)
- reclusa, Taheitia reclusa (R.J.L. Guppy, 1871) - (TRUNCATELLIDAE)
- reclusa, Venus reclusa Favanne, 1780 - syn of: Galatea paradoxa (I. von Born, 1780) - (VENERIDAE)
- reclusa, Xenophora reclusa T.A. Conrad in Wailes, 1854 † - (XENOPHORIDAE) (FOSSIL)
- reclusiana, Tornatellina reclusiana (S.A.A. Petit De La Saussaye, 1843) - (ACHATINELLIDAE)
- reclusiana, Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- reclusiana, Natica reclusiana G.P. Deshayes, 1839 - syn of: Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- reclusiana imperforata, Neverita reclusiana imperforata W.H. Dall, 1909 - syn of: Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- reclusianum, Cyclotus reclusianum L. Pfeiffer - syn of: Gonatorhaphe fornicata L. Pfeiffer - (CYCLOPHORIDAE)
- reclusianus, Fusus reclusianus S.A.A. Petit De La Saussaye, 1851 - syn of: Pusionella valida candida (R.A. Philippi, 1848) - (FASCIOLARIIDAE)
- reclusianus, Polinices reclusianus G.P. Deshayes, 1839 - syn of: Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- reclusum, Teinostoma reclusum W.H. Dall, 1889 - (TORNIDAE)
- reclusus, Calliostoma reclusus (T.A. Conrad, 1830 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- recluzi, Paramya recluzi (C.B. Adams, 1864) - (MYIDAE)
- recluzi, Trivia recluzi F. Cailliaud in A.E.M. Cossmann, 1896 † - (TRIVIIDAE) (FOSSIL)
- Recluzia, Genus Recluzia R. Petit, 1853 (JANTHINIDAE)
- recluziana, Albersia zonulata recluziana (E.J. Le Guillou, 1842) - (CAMAENIDAE)
- recluziana, Scintilla recluziana G.P. Deshayes, 1856 - (GALEOMMATIDAE)
- recluziana, Helix recluziana E.J. Le Guillou, 1842 - syn of: Albersia zonulata recluziana (E.J. Le Guillou, 1842) - (HELICIDAE)
- recluziana, Partula recluziana S.A.A. Petit De La Saussaye, 1850 - (PARTULIDAE)
- recluziana, Vanikoro recluziana A. Adams & G.F. Angas, 1864 - syn of: Vanikoro sigaretiformis (V.L.V. Potiez & A. Michaud, 1838) - (VANIKORIDAE)
- recluzianum, Cyclotus recluzianum L. Pfeiffer - syn of: Gonatorhaphe fornicata L. Pfeiffer - (CYCLOPHORIDAE)
- recluzianum, Penicillus recluzianum J.C. Chenu, 1842 - syn of: Verpa philippinensis (J.C. Chenu, 1843) - (PENICILLIDAE)
- recluzianum, Cyclostoma recluzianum L. Pfeiffer - syn of: Gonatorhaphe fornicata L. Pfeiffer - (POMATIIDAE)
- recluzianus, Mesembrinus recluzianus (L. Pfeiffer, 1847) - (BULIMULIDAE)
- recluzianus, Kioconus recluzianus (M. Bernardi, 1853) - (CONIDAE)
- recluzianus, Fusus recluzianus S.A.A. Petit De La Saussaye, 1851 - syn of: Pusionella valida candida (R.A. Philippi, 1848) - (FASCIOLARIIDAE)
- recluzianus, Polinices recluzianus G.P. Deshayes, 1839 - syn of: Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- recluzianus, Clithon recluzianus E.J. Le Guillou, 1841 - (NERITIDAE)
- recluzianus alta, Polinices recluzianus alta R. Arnold, 1903 - syn of: Neverita reclusiana (G.P. Deshayes, 1839) - (NATICIDAE)
- recluzianus gloriakiiensis, Conus recluzianus gloriakiiensis J.T. Kuroda & K. Itô, 1961 - syn of: Kioconus gloriakiiensis (J.T. Kuroda & K. Itô, 1961) - (CONIDAE)
- recluzianus lineolatus, Otosomus recluzianus lineolatus T.A. Conrad, 1855 - syn of: Mesembrinus lineolatus (T.A. Conrad, 1855) - (BULIMULIDAE)
- recluzianus martensianus, Mesembrinus recluzianus martensianus H.A. Pilsbry, 1899 - (BULIMULIDAE)
- recluzianus roseorapum, Conus recluzianus roseorapum G. Raybaudi Massilia & A.J. Da Motta, 1990 - syn of: Kioconus roseorapum (G. Raybaudi Massilia & A.J. Da Motta, 1990) - (CONIDAE)
- recluzianus simanoki, Kioconus recluzianus simanoki M.J. Tenorio, G.T. Poppe & S.P. Tagaro, 2007 - (CONIDAE)
- recluzianus urashimanus, Conus recluzianus urashimanus J.T. Kuroda & K. Itô, 1961 - syn of: Kioconus urashimanus (J.T. Kuroda & K. Itô, 1961) - (CONIDAE)
- recluzii, Anisodonta recluzii A. Adams, 1864 - (BASTEROTIIDAE)
- recluzii, Cyrena recluzii T. Prime, 1865 - syn of: Polymesoda inflata (R.A. Philippi, 1851) - (CYRENIDAE)
- recluzii, Abra recluzii G.P. Deshayes, 1857 † - (SEMELIDAE) (FOSSIL)
- recognita, Polinices recognita J.F. Mabille & A. de Rochebrune, 1889 - syn of: Falsilunatia patagonica (R.A. Philippi, 1845) - (NATICIDAE)
- recognita, Natica recognita J.F. Mabille & A. de Rochebrune, 1889 - syn of: Falsilunatia patagonica (R.A. Philippi, 1845) - (NATICIDAE)
- recognita, Chione recognita E.A. Smith, 1886 - syn of: Timoclea subnodulosa (S.C.T. Hanley, 1845) - (VENERIDAE)
- recognitus, Bulimulus recognitus J.F. Mabille, 1895 - syn of: Rabdotus sufflatus A.A. Gould, 1859 - (BULIMULIDAE)
- recognitus, Pyruconus recognitus (R.J.L. Guppy, 1867 †) - (CONIDAE) (FOSSIL)
- recognitus, Conus recognitus R.J.L. Guppy, 1867 † - syn of: Pyruconus recognitus (R.J.L. Guppy, 1867 †) - (CONIDAE) (FOSSIL)
- recognitus, Melina recognitus J.F. Mabille, 1895 † - (MALLEIDAE) (FOSSIL)
- recognitus, Isognomon recognitus J.F. Mabille, 1895 - (PTERIIDAE)
- recondita, Sitala recondita H.H. Godwin-Austen, 1883 - (ARIOPHANTIDAE)
- recondita, Chauvetia recondita (G.A. Brugnone, 1873) - (BUCCINIDAE)
- recondita, Renschiphaedusa cumingiana recondita (E.R. Sykes, 1894) - (CLAUSILIIDAE)
- recondita, Gibberula recondita (T.A. de M. Monterosato, 1884) - (CYSTISCIDAE)
- recondita, Spengleria recondita (B. Phillips, 1829 †) - (GASTROCHAENIDAE) (FOSSIL)
- recondita, Gastrocopta recondita C.M. Tapparone-Canefri, 1883 - (GASTROCOPTIDAE)
- recondita, Helix recondita C.A. Westerlund, 1876 - syn of: Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- recondita, Austromactra recondita (G.P. Deshayes, 1857 †) - (MACTRIDAE) (FOSSIL)
- recondita, Bela recondita É.A.A. Locard, 1897 - syn of: Gymnobela pyrrhogramma (P. Dautzenberg & H. Fischer, 1896) - (MANGELIIDAE)
- recondita, Marginella recondita T.A. de M. Monterosato, 1884 - syn of: Gibberula recondita (T.A. de M. Monterosato, 1884) - (MARGINELLIDAE)
- recondita, Nucula recondita S. Gofas & C. Salas, 1996 - syn of: Austronucula perminima (T.A. de M. Monterosato, 1875) - (NUCULIDAE)
- recondita, Pholas recondita Phillips, 1829 † - (PHOLADIDAE) (FOSSIL)
- recondita, Polycerella recondita R.L. Schmekel, 1965 - syn of: Polycerella emertoni (A.E. Verrill, 1880) - (POLYCERIDAE)
- recondita, Gymnobela recondita N. Tiberi, 1869 - syn of: Gymnobela pyrrhogramma (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- recondita, Sportella recondita (P. Fischer in L. de Folin, 1872) - (SPORTELLIDAE)
- recondita, Stenothyra recondita W.A. Lindholm, 1929 - (STENOTHYRIDAE)
- recondita, Sulcerato recondita (J.C. Melvill & R. Standen, 1903) - (TRIVIIDAE)
- recondita, Erato recondita J.C. Melvill & R. Standen, 1903 - syn of: Sulcerato recondita (J.C. Melvill & R. Standen, 1903) - (TRIVIIDAE)
- recondita, Proterato recondita J.C. Melvill & R. Standen, 1903 - syn of: Sulcerato recondita (J.C. Melvill & R. Standen, 1903) - (TRIVIIDAE)
- recondita, Onchidiopsis recondita L.S.R. Bergh, 1853 - syn of: Onchidiopsis carnea L.S.R. Bergh, 1853 - (VELUTINIDAE)
- recondita, Pullastra recondita Phillips, 1829 † - (VENERIDAE) (FOSSIL)
- recondita apicoflavicans, Gibberula recondita apicoflavicans É.A.A. Locard & E. Caziot, 1900 - syn of: Gibberula recondita (T.A. de M. Monterosato, 1884) - (CYSTISCIDAE)
- reconditum, Radoceras reconditum P.A. Zhuravleva, 1972 † - syn of: Onyxites inversus (Wenjukov, 1866 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- reconditum, Pleurotomella reconditum (É.A.A. Locard, 1891) - (RAPHITOMIDAE)
- reconditum, Raphitoma reconditum É.A.A. Locard, 1891 - syn of: Pleurotomella reconditum (É.A.A. Locard, 1891) - (RAPHITOMIDAE)
- reconditus, Bulimus reconditus L.A. Reeve, 1849 - syn of: Bostryx nigropileatus L.A. Reeve, 1849 - (BULIMULIDAE)
- reconditus, Euomphalus reconditus Klipstein, 1843 † - syn of: Anomphalus helicoides (Münster, 1841 †) - (EUOMPHALIDAE) (FOSSIL)
- reconditus, Spaniorinus reconditus (P. Fischer, 1872 †) - (GALEOMMATIDAE) (FOSSIL)
- reconditus, Mimachlamys reconditus (D.C. Solander, 1766 †) - (PECTINIDAE) (FOSSIL)
- reconditus, Adelomelon reconditus D. Frassinetti, 2000 † - (VOLUTIDAE) (FOSSIL)
- reconducta, Hyaloscala reconducta M.E.A. de Boury, 1919 - syn of: Epitonium kraussi (P. Nyst, 1871) - (EPITONIIDAE)
- reconductum, Epitonium reconductum M.E.A. de Boury, 1919 - syn of: Epitonium kraussi (P. Nyst, 1871) - (EPITONIIDAE)
- recopei, Holcodiscus recopei J.H.F. Douvillé, 1910 † - syn of: Holcoptychites neuquensis J.H.F. Douvillé, 1910 † - (HOLCODISCIDAE) (FOSSIL)
- recopei, Holcoptychites recopei J.H.F. Douvillé, 1910 † - (NEOCOMITIDAE) (FOSSIL)
- recordata, Drillia recordata (E.R. Sykes, 1905) - (DRILLIIDAE)
- recourti, Americoliva recourti E.J. Petuch & R.F. Myers, 2014 - (OLIVIDAE)
- Recourtoliva, Genus Recourtoliva Petuch & Berschauer, 2017 (OLIVIDAE)
- recreata, Amaea recreata M.E.A. de Boury, 1919 - syn of: Epitonium kraussi (P. Nyst, 1871) - (EPITONIIDAE)
- recta, Achatinella livida recta W. Newcomb, 1854 - (ACHATINELLIDAE)
- recta, Acteocina recta (A.V.M.D. D'Orbigny, 1841) - (ACTEOCINIDAE)
- recta, Allatheca recta (A.V. Sysoev, 1968 †) - (ALLATHECIDAE) (FOSSIL)
- recta, Bulla recta O.A.L. Mörch, 1875 - syn of: Volvulella minuta (K.J. Bush, 1885) - (BULLIDAE)
- recta, Westraltrachia recta G.A. Solem, 1984 - (CAMAENIDAE)
- recta, Cardinia recta J.B.M. Dana, 1847 † - syn of: Stutchburia recta (J.B.M. Dana, 1847 †) - (CARDINIIDAE) (FOSSIL)
- recta, Carditamera recta T.A. Conrad, 1868 † - (CARDITIDAE) (FOSSIL)
- recta, Heleobia recta A. Mousson - syn of: Semisalsa stagnorum (J.F. Gmelin, 1791) - (COCHLIOPIDAE)
- recta, Styliola recta H.M.D. de Blainville, 1827 - syn of: Styliola subula (J.R.C. Quoy & J.P. Gaimard, 1827) - (CRESEIDAE)
- recta, Creseis recta J.E. Gray, 1850 - syn of: Creseis clava (P.C.A.S.L. Rang, 1828) - (CRESEIDAE)
- recta, Diplommatina recta E.A. Smith, 1895 - (DIPLOMMATINIDAE)
- recta, Dreissena recta É.A.A. Locard, 1893 - syn of: Dreissena polymorpha (P.S. Pallas, 1771) - (DREISSENIDAE)
- recta, Notomya recta J.B.M. Dana, 1847 † - syn of: Cleobis recta (J.B.M. Dana, 1847 †) - (EDMONDIIDAE) (FOSSIL)
- recta, Eulima recta C.B. Adams, 1852 - (EULIMIDAE)
- recta, Melanella recta E. Réquien, 1849 - syn of: Melanella polita (C. Linnaeus, 1758) - (EULIMIDAE)
- recta, Austrocarina recta (C. Hedley, 1903) - (HORAICLAVIDAE)
- recta, Hydrobia recta É.A.A. Locard, 1899 - syn of: Peringia ulvae (T. Pennant, 1777) - (HYDROBIIDAE)
- recta, Stutchburia recta (J.B.M. Dana, 1847 †) - (KALENTERIDAE) (FOSSIL)
- recta, Laternula recta (L.A. Reeve, 1863) - (LATERNULIDAE)
- recta, Leiostyla recta R.T. Lowe, 1852 - (LAURIIDAE)
- recta, Lepetopsis recta Tolmachoff, 1930 † - syn of: Calloconus recta (Tolmachoff, 1930 †) - (LEPETOPSIDAE) (FOSSIL)
- recta, Ovocerina recta (Barrande, 1865 †) - (MANDALOCERATIDAE) (FOSSIL)
- recta, Mangelia recta E.A. Smith, 1888 - (MANGELIIDAE)
- recta, Eratoidea recta T. McCleery, 2011 - (MARGINELLIDAE)
- recta, Tricarilda recta A. Nützel & J. Gründel, 2015 † - (MATHILDIDAE) (FOSSIL)
- recta, Cleobis recta (J.B.M. Dana, 1847 †) - (MEGADESMIDAE) (FOSSIL)
- recta, Calloconus recta (Tolmachoff, 1930 †) - (METOPTOMATIDAE) (FOSSIL)
- recta, Cymatonota recta Ulrich, 1893 † - (MODIOMORPHIDAE) (FOSSIL)
- recta, Myalina recta Shumard, 1858 † - (MYALINIDAE) (FOSSIL)
- recta, Tritia recta (G.F. Dollfus & P. Dautzenberg, 1886 †) - (NASSARIIDAE) (FOSSIL)
- recta, Decoritheca recta Z.X. Qian, 1989 † - (NOVITATIDAE) (FOSSIL)
- recta, Oxychilus recta É.A.A. Locard, 1894 - syn of: Oxychilus draparnaudi (H.H. Beck, 1837) - (OXYCHILIDAE)
- recta, Atrina recta W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - (PINNIDAE)
- recta, Wrightudora recta (J. Gundlach in L. Pfeiffer, 1863) - (POMATIIDAE)
- recta, Prothyris recta Whidborne, 1896 † - (PROTHYRIDAE) (FOSSIL)
- recta, Turbonilla recta W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- recta, Odostomia recta C.F. Laseron, 1959 - (PYRAMIDELLIDAE)
- recta, Volvulella recta H.W. Harry, 1967 - syn of: Volvulella minuta (K.J. Bush, 1885) - (RHIZORIDAE)
- recta, Kaitoa recta C.R. Laws, 1939 † - (SCAPHANDRIDAE) (FOSSIL)
- recta, Oxyloma recta A.A. Baudon, 1877 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- recta, Stenomelania recta (I. Lea, 1850) - (THIARIDAE)
- recta, Parailsanella recta (Missarzhevsky, 1989 †) - (TRENELLIDAE) (FOSSIL)
- recta, Isitella recta Missarzhevsky, 1989 † - syn of: Parailsanella recta (Missarzhevsky, 1989 †) - (TRENELLIDAE) (FOSSIL)
- recta, Triphora recta E.A. Smith, 1890 - (TRIPHORIDAE)
- recta, Niveria recta (O. Couffon, 1902) - (TRIVIIDAE)
- recta, Vermicularia recta A.A. Olsson & A. Harbison, 1953 † - (TURRITELLIDAE) (FOSSIL)
- recta, Ligumia recta (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- recta, Myonia recta J.B.M. Dana, 1847 † - syn of: Cleobis recta (J.B.M. Dana, 1847 †) - (VACUNELLIDAE) (FOSSIL)
- recta, Serpula recta J. Fleming in T. Brown, 1827 - syn of: Cornuoides minor T. Brown, 1827 - (VERMETIDAE)
- recta, Eotebenna recta Missarzhevsky & Mambetov, 1981 † - (YOCHELCIONELLIDAE) (FOSSIL)
- recta barreti, Wrightudora recta barreti (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- recta macilenta, Leiostyla recta macilenta R.T. Lowe, 1852 - (LAURIIDAE)
- recta martiensis, Wrightudora recta martiensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- Rectacirsa, Subgenus Cirsotrema (Rectacirsa) T. Iredale, 1936 (EPITONIIDAE)
- Rectacrisa, syn of: Subgenus Cirsotrema (Rectacirsa) T. Iredale, 1936 (EPITONIIDAE)
- rectaespinosa, Oistotrigonia rectaespinosa (Saveliev, 1958 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- rectalaterarca, Dunbarella rectalaterarca (Cox, 1857 †) - (PTERINOPECTINIDAE) (FOSSIL)
- rectangula, Hawaiarca rectangula W.H. Dall & al., 1938 - (ARCIDAE)
- rectangula, Beichuania rectangula H.X. Liu & Gu, 1988 † - (BEICHUANIIDAE) (FOSSIL)
- rectangula, Nuculopsis rectangula (McChesney, 1860 †) - (NUCULIDAE) (FOSSIL)
- rectangula, Stenoclymenia rectangula Hartenfels & Becker, 2016 † - (PLATYCLYMENIIDAE) (FOSSIL)
- rectangula, Electroma rectangula Finlay & J. Marwick, 1938 † - (PTERIIDAE) (FOSSIL)
- rectangular, Diastole rectangular (L. Pfeiffer, 1846) - (EUCONULIDAE)
- Rectangularca, Genus Rectangularca F.E. Eames, 1951 (NOETIIDAE) (FOSSIL)
- rectangulare, Loxonema rectangulare Spitz, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- rectangulare, Aulametacoceras rectangulare (J. Von Hauer, 1850 †) - (TAINOCERATIDAE) (FOSSIL)
- rectangulare, Trapezium rectangulare Woods † - (TRAPEZIDAE) (FOSSIL)
- rectangulare, Trochonemella rectangulare W.J. Raymond, 1905 † - syn of: Trochonemella knoxvillensis (Ulrich & Scofield, 1897 †) - (TROCHONEMATIDAE) (FOSSIL)
- rectangularis, Gaudemerites rectangularis Guex & al., 2005 † - (ALBANITIDAE) (FOSSIL)
- rectangularis, Arca rectangularis S. Tokunaga, 1906 - syn of: Arca boucardi F.P. Jousseaume, 1894 - (ARCIDAE)
- rectangularis, Basterotina rectangularis E.V. Coan, 1999 - (BASTEROTIIDAE)
- rectangularis, Ceratites rectangularis Smith, 1914 † - syn of: Silberlingitoides clarkei (Smith, 1914 †) - (CERATITIDAE) (FOSSIL)
- rectangularis, Condylocardia rectangularis B.C. Cotton, 1930 - (CONDYLOCARDIIDAE)
- rectangularis, Lophospira rectangularis Ulrich & Scofield, 1897 † - syn of: Trochonemella knoxvillensis (Ulrich & Scofield, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- rectangularis, Gloverina rectangularis R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- rectangularis, Trematodiscus rectangularis (J. Von Hauer †) - (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- rectangularis, Asgardaspira rectangularis (Kobayashi, 1959 †) - (OPHILETIDAE) (FOSSIL)
- rectangularis, Palaeomutela rectangularis Amalitsky, 1892 † - (PALAEOMUTELIDAE) (FOSSIL)
- rectangularis, Paraceltites rectangularis Miller, 1944 † - (PARACELTITIDAE) (FOSSIL)
- rectangularis, Parkinsonia eimensis rectangularis Wetzel, 1937 † - (PARKINSONIIDAE) (FOSSIL)
- rectangularis, Leptosolen rectangularis (Woods, 1897 †) - (PHARIDAE) (FOSSIL)
- rectangularis, Mareleptopoma rectangularis E. Rolán & R. Fernández-Garcés, 1993 - (PICKWORTHIIDAE)
- rectangularis, Plectonotus rectangularis Knod, 1908 † - (PLECTONOTIDAE) (FOSSIL)
- rectangularis, Pyrgulina rectangularis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- rectangularis, Sinuites rectangularis Ulrich & Scofield, 1897 † - (SINUITIDAE) (FOSSIL)
- rectangularis, Parviturbo rectangularis F. Rubio, E. Rolán & R. Fernández-Garcés, 2015 - (SKENEIDAE)
- rectangularis, Tetragonites rectangularis Wiedmann 1962 † - (TETRAGONITIDAE) (FOSSIL)
- rectangularis, Thracia rectangularis T. Soot-Ryen, 1941 - syn of: Thracia gracilis J.G. Jeffreys, 1863 - (THRACIIDAE)
- rectangularum, Beyrichoceras rectangularum Bisat, 1934 † - (MAXIGONIATITIDAE) (FOSSIL)
- rectangulata, Myadora rectangulata K.H. Barnard, 1964 - (MYOCHAMIDAE)
- rectangulata, Cyathodonta rectangulata O. Macsotay, 1968 - syn of: Cyathodonta rugosa (J.B.P.A. Lamarck, 1818) - (THRACIIDAE)
- rectangulata, Thracia rectangulata O. Macsotay, 1968 - syn of: Cyathodonta rugosa (J.B.P.A. Lamarck, 1818) - (THRACIIDAE)
- rectangulata, Policordia rectangulata I.N.V. Ivanova, 1977 - (VERTICORDIIDAE)
- rectangulatus, Euomphalus rectangulatus Mansuy, 1913 † - syn of: Discotropis klobukowskii (Mansuy, 1912 †) - (EUOMPHALIDAE) (FOSSIL)
- rectangulatus, Primitiviptychites rectangulatus Bogoslowsky, 1902 † - (POLYPTYCHITIDAE) (FOSSIL)
- Rectanguloceras, Genus Rectanguloceras Stumbur , 1962 (TARPHYCERATIDAE) (FOSSIL)
- rectangulus, Parallelodon rectangulus Mansuy, 1914 † - (PARALLELODONTIDAE) (FOSSIL)
- Rectartemon, Genus Rectartemon F.C. Baker, 1925 (STREPTAXIDAE)
- rectaspira, Vokesimurex rectaspira R. Houart & V. Héros, 2015 - (MURICIDAE)
- Rectaxis, Genus Rectaxis F.C. Baker, 1926 (SPIRAXIDAE)
- rectaxis, Orienticoptis rectaxis (H.A. Pilsbry, 1930) - (UROCOPTIDAE)
- rectaxis sculpturata, Orienticoptis rectaxis sculpturata H.A. Pilsbry, 1929 - syn of: Orienticoptis sculpturata (H.A. Pilsbry, 1929) - (UROCOPTIDAE)
- rectecostata, Medfrazyga rectecostata A. Nützel & Nakazawa, 2012 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- rectecostata, Angularia rectecostata A. Nützel & Erwin, 2004 † - (PURPURINIDAE) (FOSSIL)
- rectecostata, Werfenella rectecostata (J. Von Hauer, 1851 †) - (PURPURINIDAE) (FOSSIL)
- rectecostatus, Turbo rectecostatus J. Von Hauer, 1851 † - syn of: Werfenella rectecostata (J. Von Hauer, 1851 †) - (TURBINIDAE) (FOSSIL)
- rectelabiatus, Pachyomphalus rectelabiatus (E.A.L. Kittl, 1894 †) - (TRICOLNATICOPSIDAE) (FOSSIL)
- recticanalis, Panamurex recticanalis N.E. Weisbord, 1962 - (MURICIDAE)
- recticanalis, Murex recticanalis S.V. Wood, 1879 - syn of: Trophonopsis muricata (G. Montagu, 1803) - (MURICIDAE)
- recticanalis, Panamurex recticanalis Auct. non N.E. Weisbord, 1962 - syn of: Panamurex eugeniae E.H. Vokes, 1992 - (MURICIDAE)
- Recticardo, Genus Recticardo Cossmann, 1908 (CARDIIDA (UNASSIGNED)) (FOSSIL)
- recticeps, Macromphalina recticeps (H.A. Pilsbry & A.A. Olsson, 1945) - (VANIKORIDAE)
- recticornis, Murex recticornis E.C. Von Martens in C.H.W.T. Löbbecke & W. Kobelt, 1880 - syn of: Chicoreus longicornis (R.W. Dunker, 1864) - (MURICIDAE)
- recticosta, Turricula recticosta (L.M.D. Bellardi, 1850 †) - (CLAVATULIDAE) (FOSSIL)
- recticosta, Clymenia recticosta Rzehak, 1910 † - syn of: Platyclymenia annulata (G.G. Münster, 1832 †) - (CLYMENIIDAE) (FOSSIL)
- recticosta, Boreosiphopsis recticosta (A. von Koenen, 1889 †) - (CONIDAE) (FOSSIL)
- recticosta, Euomphalopterus recticosta J. Perner, 1903 † - (EUOMPHALIDAE) (FOSSIL)
- recticosta, Triptychia recticosta (O. Boettger, 1877) † - (FILHOLIIDAE) (FOSSIL)
- recticosta, Bela taprurensis recticosta (P.M. Pallary, 1904) - (MANGELIIDAE)
- recticosta, Decorochilina recticosta (J. Perner, 1903 †) - (SOLENISCIDAE) (FOSSIL)
- recticosta, Macrochilina recticosta J. Perner, 1903 † - syn of: Decorochilina recticosta (J. Perner, 1903 †) - (SOLENISCIDAE) (FOSSIL)
- recticosta, Melanoides recticosta (E.C. Von Martens, 1882) - (THIARIDAE)
- recticosta, Trachycion recticosta (L. Pfeiffer, 1847) - (UROCOPTIDAE)
- recticosta townsendi, Trachycion recticosta townsendi (H.A. Pilsbry & T.D.A. Cockerell, 1903) - (UROCOPTIDAE)
- recticostata, Lissodrillia recticostata W.G. Fargo, 1953 - syn of: Cerodrillia simpsoni (W.H. Dall, 1887) - (DRILLIIDAE)
- recticostata, Soliclymenia recticostata Ruan, 1981 † - (GLATZIELLIDAE) (FOSSIL)
- recticostata, Darellella recticostata Buckman † - (HILDOCERATIDAE) (FOSSIL)
- recticostata, Tinnyea recticostata (B.W. Jenkins, 1864 †) - (PACHYCHILIDAE) (FOSSIL)
- recticostata, Pseudozygopleura recticostata Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- recticostata, Turbonilla recticostata J.C. Melvill, 1904 - (PYRAMIDELLIDAE)
- recticostata, Torrecoptis recticostata C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- recticostatum, Mortoniceras recticostatum Spath, 1925 † - (BRANCOCERATIDAE) (FOSSIL)
- recticostatum, Crioceratites recticostatum Karakasch, 1907 † - (CRIOCERATITIDAE) (FOSSIL)
- recticostatum, Gargasiceras recticostatum (Kilian, 1913 †) - (DESHAYESITIDAE) (FOSSIL)
- recticostatus, Kutatissites recticostatus (Eristavi, 1955 †) - (ANCYLOCERATIDAE) (FOSSIL)
- recticostatus, Bellerophon recticostatus Portlock, 1843 † - (BELLEROPHONTIDAE) (FOSSIL)
- recticostatus, Hamites recticostatus Seunes, 1890 † - syn of: Glyptoxoceras rugatum (E. Forbes, 1846 †) - (HAMITIDAE) (FOSSIL)
- recticostatus, Costidiscus recticostatus (A.V.M.D. D'Orbigny, 1840 †) - (MACROSCAPHITIDAE) (FOSSIL)
- recticostatus, Ruanites recticostatus (Erben, 1962 †) - (MIMOSPHINCTIDAE) (FOSSIL)
- recticostatus, Nassarius recticostatus (L.M.D. Bellardi, 1882 †) - (NASSARIIDAE) (FOSSIL)
- recticostulata, Rissoina recticostulata A.E.M. Cossmann & M.A. Peyrot, 1919 † - syn of: Rissoina subconoidea (J.P.S. Grateloup, 1847 †) - (RISSOINIDAE) (FOSSIL)
- rectidens, Cerastoderma rectidens G.S. Coen, 1917 - syn of: Cerastoderma glaucum (J.G. Bruguière, 1789) - (CARDIIDAE)
- rectidens, Sphaerium rectidens Y.I. Starobogatov & E.A. Streletzkaja, 1967 - syn of: Sphaerium nitidum S. Clessin, 1976 - (SPHAERIIDAE)
- Rectidens, Genus Rectidens C.T. Simpson, 1900 (UNIONIDAE)
- rectidentata, Matschachelia rectidentata (A.A. Schileyko, 1975) - (LAURIIDAE)
- rectidorsalis, Glycymeris rectidorsalis J. Marwick, 1931 † - (GLYCYMERIDIDAE) (FOSSIL)
- rectiensis, Brachidontes rectiensis (Woods) † - (MYTILIDAE) (FOSSIL)
- rectilabrum, Setobaudinia rectilabrum (E.A. Smith, 1894) - (CAMAENIDAE)
- rectilabrum, Damochlora rectilabrum E.A. Smith, 1894 - syn of: Setobaudinia rectilabrum (E.A. Smith, 1894) - (CAMAENIDAE)
- Rectilabrum, Genus Rectilabrum P. Bouchet & A. Warιn, 1986 (EULIMIDAE)
- rectilabrum, Lymnaea rectilabrum T.N. Annandale & B. Prashad, 1919 - syn of: Radix gedrosiana rectilabrum (T.N. Annandale & B. Prashad, 1919) - (LYMNAEIDAE)
- rectilabrum, Radix gedrosiana rectilabrum (T.N. Annandale & B. Prashad, 1919) - (LYMNAEIDAE)
- rectilabrum, Euspira rectilabrum T.A. Conrad, 1858 † - (NATICIDAE) (FOSSIL)
- rectilabrum, Lioglyphostoma rectilabrum J.H. McLean & L.H. Poorman, 1971 - (PSEUDOMELATOMIDAE)
- rectilamellata, Chuniscala rectilamellata R.N. Kilburn, 1985 - (EPITONIIDAE)
- rectilaminatum, Epitonium rectilaminatum W.H. Dall, 1907 - syn of: Epitonium sawinae (W.H. Dall, 1903) - (EPITONIIDAE)
- rectilatera, Magnatica rectilatera Finlay, 1926 † - (NATICIDAE) (FOSSIL)
- rectilatera, Trochonemopsis rectilatera (J.W. Hall & R.P. Whitfield, 1872 †) - (OMPHALOTROCHIDAE) (FOSSIL)
- rectilaterale, Tryblidium rectilaterale Berkey, 1898 † - syn of: Kirengella rectilateralis (Berkey, 1898 †) - (TRYBLIDIIDAE) (FOSSIL)
- rectilateralis, Dunbarites rectilateralis (Miller, 1930 †) - (ADRIANITIDAE) (FOSSIL)
- rectilateralis, Turricula rectilateralis G.B. II Sowerby, 1874 - syn of: Vexillum suluense (A. Adams & L.A. Reeve, 1850) - (CLAVATULIDAE)
- rectilateralis, Vexillum rectilateralis G.B. II Sowerby, 1874 - syn of: Vexillum suluense (A. Adams & L.A. Reeve, 1850) - (COSTELLARIIDAE)
- rectilateralis, Kirengella rectilateralis (Berkey, 1898 †) - (KIRENGELLIDAE) (FOSSIL)
- rectilateralis, Mitra rectilateralis G.B. II Sowerby, 1874 - syn of: Vexillum suluense (A. Adams & L.A. Reeve, 1850) - (MITRIDAE)
- rectilinea, Strobeus rectilinea (B. Phillips, 1836 †) - (SOLENISCIDAE) (FOSSIL)
- rectilinea, Schwartziella rectilinea E. Rolán & L. Luque, 2000 - (ZEBINIDAE)
- rectilinearis, Carbonicola rectilinearis Trueman & Weir, 1948 † - (ANTHRACOSIIDAE) (FOSSIL)
- rectilinearis, Mesembrinus rectilinearis (L. Pfeiffer, 1855) - (BULIMULIDAE)
- rectilineum, Buccinum rectilineum B. Phillips, 1836 † - syn of: Strobeus rectilinea (B. Phillips, 1836 †) - (BUCCINIDAE) (FOSSIL)
- rectilobatus, Neoaganides rectilobatus Ruzhentsev, 1950 † - (PSEUDOHALORITIDAE) (FOSSIL)
- Rectilyonsiella, syn of: Genus Lyonsiella G.O. Sars, 1872 (LYONSIELLIDAE)
- rectimarginata, Cardiomya rectimarginata R.K. Dell, 1962 - (CUSPIDARIIDAE)
- rectimargo, Calyptogena rectimargo O.A. Scarlato, 1981 - (VESICOMYIDAE)
- Rectimitoceras, Genus Rectimitoceras Becker, 1996 (PRIONOCERATIDAE) (FOSSIL)
- rectimurum, Orthonema rectimurum Batten, 1985 † - (ORTHONEMATIDAE) (FOSSIL)
- rectinea, Macrochilina rectinea (B. Phillips, 1836 †) - (SOLENISCIDAE) (FOSSIL)
- rectinoda, Porcellia rectinoda Winchell, 1863 † - (PORCELLIIDAE) (FOSSIL)
- Rectiplanes, syn of: Genus Antiplanes W.H. Dall, 1902 (PSEUDOMELATOMIDAE)
- rectiradiatus, Kammerkarites rectiradiatus Guex, 1995 † - (SCHLOTHEIMIIDAE) (FOSSIL)
- rectirostris, Vokesimurex rectirostris (G.B. II Sowerby, 1841) - (MURICIDAE)
- rectirostris, Haustellum rectirostris T. Shikama, 1973 - syn of: Vokesimurex gallinago (G.B. III Sowerby, 1903) - (MURICIDAE)
- rectirostris, Exilioidea rectirostris (P.P. Carpenter, 1864) - (PTYCHATRACTIDAE)
- rectirostris, Tibia rectirostris J.B.P.A. Lamarck, 1822 - syn of: Tibia fusus (C. Linnaeus, 1758) - (ROSTELLARIIDAE)
- rectisima, Hoernesia rectisima H. Guo, 1985 † - (BAKEVELLIIDAE) (FOSSIL)
- rectispina, Agnocardia rectispina (A. von Koenen, 1893 †) - (CARDIIDAE) (FOSSIL)
- rectistriata, Lophospira rectistriata W.J. Raymond, 1908 † - (LOPHOSPIRIDAE) (FOSSIL)
- rectistriata, Decorochilina rectistriata (J. Perner, 1903 †) - (SOLENISCIDAE) (FOSSIL)
- rectistriata, Macrochilina rectistriata J. Perner, 1903 † - syn of: Decorochilina rectistriata (J. Perner, 1903 †) - (SOLENISCIDAE) (FOSSIL)
- rectistriatum, Palaeozygopleura rectistriatum (J.W. Hall, 1879 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- rectistriatus, Waagenella rectistriatus Weir, 1931 † - (BELLEROPHONTIDAE) (FOSSIL)
- rectistrigata, Limicolaria rectistrigata (E.A. Smith, 1880) - (ACHATINIDAE)
- rectistrigatus, Neopetraeus arboriferus rectistrigatus H.A. Pilsbry, 1898 - (BULIMULIDAE)
- Rectisulcus, syn of: Genus Antiplanes W.H. Dall, 1902 (PSEUDOMELATOMIDAE)
- rectisuturale, Pseudophacoceras rectisuturale Foord † - (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- rectius, Dentalium rectius P.P. Carpenter, 1864 - syn of: Rhabdus rectius (P.P. Carpenter, 1864) - (DENTALIIDAE)
- rectius, Rhabdus rectius (P.P. Carpenter, 1864) - (RHABDIDAE)
- rectiuscula, Eulima rectiuscula W.H. Dall, 1890 - syn of: Eulima ephamilla R.B. Watson, 1883 - (EULIMIDAE)
- Rectiviviparus, Subgenus Viviparus (Rectiviviparus) H.A. Pilsbry & J.C. Bequaert, 1927 (VIVIPARIDAE)
- Rectobelus, Subgenus Obeliscus (Rectobelus) F.C. Baker, 1937 (SUBULINIDAE)
- Rectoclymenia, Genus Rectoclymenia Wedekind, 1908 (RECTOCLYMENIIDAE) (FOSSIL)
- RECTOCLYMENIIDAE Schindewolf, 1923 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CLYMENIIDA [Order]-CYRTOCLYMENIOIDEA [Superfamily]) (FOSSIL)
- rectoconum, Acaroceras rectoconum C. Chen, Z. Qi & T.E. Chen, 1979 † - (ACAROCERATIDAE) (FOSSIL)
- rectodonta, Palaeomutela rectodonta Amalitsky, 1892 † - (PALAEOMUTELIDAE) (FOSSIL)
- rectodorsala, Palaeomutela rectodorsala Gusev † - (PALAEOMUTELIDAE) (FOSSIL)
- rectodorsalis, Pitar rectodorsalis K.L. Lamprell & R.N. Kilburn, 1999 - (VENERIDAE)
- rectogallica, Turbonilla rectogallica F. Sacco, 1892 - (PYRAMIDELLIDAE)
- rectoides, Austropyrgus rectoides A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- rectoides, Unio rectoides R.P. Whitfield, 1885 - syn of: Ligumia recta (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- Rectoleacina, Genus Rectoleacina H.A. Pilsbry, 1907 (OLEACINIDAE)
- rector, Subvestinautilus rector Shimanskiy, 1967 † - (KONINCKIOCERATIDAE) (FOSSIL)
- Rectseptoceras, Genus Rectseptoceras Tsou & Chen, 1979 (ELLESMEROCERIDA (UNASSIGNED)) (FOSSIL)
- rectum, Cristilabrum rectum G.A. Solem, 1988 - (CAMAENIDAE)
- rectum, Cerithium rectum Vinassa de Regny, 1898 † - syn of: Teremitra hortensis (Vinassa de Regny, 1898 †) - (CERITHIIDAE) (FOSSIL)
- rectum, Chaetoderma rectum G. Schwabl, 1963 - syn of: Chaetoderma hancocki (G. Schwabl, 1963) - (CHAETODERMATIDAE)
- rectum, Fissidentalium rectum (J.F. Gmelin, 1791 †) - (DENTALIIDAE) (FOSSIL)
- rectum, Gomphoceras rectum Barrande, 1865 † - syn of: Ovocerina recta (Barrande, 1865 †) - (DIESTOCERATIDAE) (FOSSIL)
- rectum, Labeceras rectum Klinger, 1976 † - (LABECERATIDAE) (FOSSIL)
- rectum, Orthodesma rectum R.P. Whitfield, 1875 † - (MODIOMORPHIDAE) (FOSSIL)
- rectus, Insignicornus rectus A.V. Sysoev, 1973 † - (ALTAICORNIDAE) (FOSSIL)
- rectus, Baculites rectus Marshall, 1926 † - (BACULITIDAE) (FOSSIL)
- rectus, Austropyrgus rectus (W.F. Ponder, D.J. Colgan, A. Clark, W.B. Miller & T. Terzis, 1994) - (HYDROBIIDAE)
- rectus, Modiolus rectus (T.A. Conrad, 1837) - (MYTILIDAE)
- rectus, Parapronorites rectus Leonova, 1989 † - (PRONORITIDAE) (FOSSIL)
- rectus, Pseudozygopleura rectus Hoare & Sturgeon, 1981 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- rectus, Ramosites rectus Ruzhencev & Bogoslovskaya, 1978 † - (RAMOSITIDAE) (FOSSIL)
- rectus, Exochorhynchus rectus Astaf'yeva-Urbaytis, 1981 † - (SANGUINOLITIDAE) (FOSSIL)
- rectus, Obeliscus rectus F.C. Baker, 1927 - (SUBULINIDAE)
- rectus, Teredo rectus B. Wade, 1926 † - (TEREDINIDAE) (FOSSIL)
- rectus, Unio rectus É.A.A. Locard, 1890 - syn of: Unio pictorum (C. Linnaeus, 1758) - (UNIONIDAE)
- recuperator, Hysteroceras recuperator Van Hoepen, 1944 † - (BRANCOCERATIDAE) (FOSSIL)
- recuperator, Sementiconcha recuperator Hautmann & al., 2013 † - (MYOPHORICARDIIDAE) (FOSSIL)
- recuperoi, Subgrossouvria recuperoi (C. Gemmellaro, 1872 †) - (PERISPHINCTIDAE) (FOSSIL)
- recurrens, Melanopsis recurrens Š. Brusina, 1874 † - (MELANOPSIDAE) (FOSSIL)
- recurrens, Ergalatax recurrens T. Iredale, 1931 - syn of: Ergalatax contracta (L.A. Reeve, 1846) - (MURICIDAE)
- recurrens, Viviparus recurrens Penecke, 1884 † - (VIVIPARIDAE) (FOSSIL)
- recurrens transitans, Melanopsis recurrens transitans Š. Brusina, 1874 † - (MELANOPSIDAE) (FOSSIL)
- recursa, Sinployea recursa G.A. Solem, 1983 - (CHAROPIDAE)
- recurva, Spinigera recurva Hudleston, 1888 † - syn of: Spiniloma recurva (Hudleston, 1888 †) - (APORRHAIDAE) (FOSSIL)
- recurva, Clivipollia recurva (L.A. Reeve, 1846) - (BUCCINIDAE)
- recurva, Rhinoclavis kochi recurva (G.B. II Sowerby, 1855) - (CERITHIIDAE)
- recurva, Clio recurva (J.G. Children, 1823) - (CLIIDAE)
- recurva, Strombina recurva (G.B. I Sowerby, 1832) - (COLUMBELLIDAE)
- recurva, Thala recurva (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- recurva, Pusia recurva G.B. III Sowerby, 1890 - syn of: Pusia recurvirostris (G.B. III Sowerby, 1908) - (COSTELLARIIDAE)
- recurva, Ctenodonta recurva Ulrich, 1894 † - (CTENODONTIDAE) (FOSSIL)
- recurva, Eulima recurva O. Böttger, 1893 - (EULIMIDAE)
- recurva, Mayesella recurva (Kitchin, 1903) † - (IOTRIGONIIDAE) (FOSSIL)
- recurva, Anatina recurva W. Wood, 1828 - syn of: Anatina anatina (L. Spengler, 1802) - (MACTRIDAE)
- recurva, Mactra recurva Wood, 1828 - syn of: Anatina anatina (L. Spengler, 1802) - (MACTRIDAE)
- recurva, Mactra recurva W. Wood, 1828 - syn of: Anatina anatina (L. Spengler, 1802) - (MACTRIDAE)
- recurva, Metoptoma recurva Berkey, 1898 † - (METOPTOMATIDAE) (FOSSIL)
- recurva, Palaeoscurria recurva J. Perner, 1903 † - (METOPTOMATIDAE) (FOSSIL)
- recurva, Nassaria recurva G.B. II Sowerby, 1859 - syn of: Nassaria acuminata (L.A. Reeve, 1844) - (NASSARIIDAE)
- recurva, Nucula recurva T.A. Conrad, 1831 - syn of: Nuculana montagui (Gray, 1825) - (NUCULIDAE)
- recurva, Phenacovolva recurva (G.B. II Sowerby in A. Adams & L.A. Reeve, 1848) - (OVULIDAE)
- recurva, Spiniloma recurva (Hudleston, 1888 †) - (SPINILOMATIDAE) (FOSSIL)
- recurva, Tellina recurva W.H. Dall, 1900 - syn of: Tellina tabogensis A.E. Salisbury, 1934 - (TELLINIDAE)
- recurva, Tudicla recurva A. Adams, 1854 - syn of: Afer porphyrostoma (L.A. Reeve, 1847) - (TURBINELLIDAE)
- recurvans, Mopalia recurvans Barnawell, 1960 - (MOPALIIDAE)
- recurvata, Corbicula recurvata (J.F.T. Eydoux, 1838) - (CYRENIDAE)
- recurvata, Fissurella recurvata E.M. Da Costa, 1839 - syn of: Diodora graeca (C. Linnaeus, 1758) - (FISSURELLIDAE)
- recurvata, Ctena orbiculata recurvata W.H. Dall, 1901 - (LUCINIDAE)
- recurvata, Trituba recurvata S. Gofas, 2003 - (NEWTONIELLIDAE)
- recurvata, Tortulosa recurvata L. Pfeiffer, 1862 - (PUPINIDAE)
- recurvatus, Gemixystus recurvatus (J.C. Verco, 1909) - (MURICIDAE)
- recurvatus, Angulus recurvatus L.G. Hertlein & A.M. Strong, 1949 - syn of: Tellina tabogensis A.E. Salisbury, 1934 - (TELLINIDAE)
- Recurvella, Genus Recurvella Chavan, 1937 (LUCINIDAE) (FOSSIL)
- Recurvina, Subgenus Strombina (Recurvina) P.O. Jung, 1989 (COLUMBELLIDAE) (FOSSIL)
- recurvirostra, Crepidula recurvirostra T.A. Conrad, 1870 † - (CALYPTRAEIDAE) (FOSSIL)
- recurvirostra, Nodolatirus recurvirostra (G.H. Schubert & J.A. Wagner, 1829) - (FASCIOLARIIDAE)
- recurvirostra, Limacina recurvirostra A. da Costa, 1865 - syn of: Peracle reticulata (A.V.M.D. D'Orbigny, 1834) - (LIMACINIDAE)
- recurvirostra, Sepia recurvirostra J.J.S. Steenstrup, 1875 - (SEPIIDAE)
- recurvirostra, Turbinella recurvirostra G.H. Schubert & J.A. Wagner, 1829 - syn of: Nodolatirus recurvirostra (G.H. Schubert & J.A. Wagner, 1829) - (TURBINELLIDAE)
- recurvirostrata, Crassispira recurvirostrata J.T. Kuroda, 1972 - (PSEUDOMELATOMIDAE)
- recurvirostratum, Latirus recurvirostratum G.H. Schubert & J.A. Wagner, 1829 - syn of: Nodolatirus recurvirostra (G.H. Schubert & J.A. Wagner, 1829) - (FASCIOLARIIDAE)
- recurvirostris, Crepidula recurvirostris T.A. Conrad, 1870 - syn of: Crepidula cymbaeformis T.A. Conrad, 1844 - (CALYPTRAEIDAE)
- recurvirostris, Pusionella recurvirostris F.P. Marrat, 1877 - syn of: Perrona aculeiformis (J.B.P.A. Lamarck, 1816) - (CLAVATULIDAE)
- recurvirostris, Pusia recurvirostris (G.B. III Sowerby, 1908) - (COSTELLARIIDAE)
- recurvirostris, Latirus recurvirostris G.H. Schubert & J.A. Wagner, 1829 - syn of: Nodolatirus recurvirostra (G.H. Schubert & J.A. Wagner, 1829) - (FASCIOLARIIDAE)
- recurvirostris, Mitra recurvirostris G.B. III Sowerby, 1908 - syn of: Pusia recurvirostris (G.B. III Sowerby, 1908) - (MITRIDAE)
- recurvirostris, Vokesimurex recurvirostris (W.J. Broderip, 1832) - (MURICIDAE)
- recurvirostris, Murex recurvirostris (W.J. Broderip, 1833) - syn of: Vokesimurex recurvirostris (W.J. Broderip, 1832) - (MURICIDAE)
- recurvirostris, Myalina recurvirostris F.B. Meek & A.H. Worthen, 1860 † - syn of: Myalina wyomingensis Lea, 1853 † - (MYALINIDAE) (FOSSIL)
- recurvirostris, Anodonta recurvirostris W. Kobelt, 1892 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- recurvirostris citrinus, Murex recurvirostris citrinus M. Smith, 1940 - syn of: Vokesimurex rubidus (F.C. Baker, 1897) - (MURICIDAE)
- recurvirostris delicatus, Murex recurvirostris delicatus M. Smith, 1940 - syn of: Vokesimurex rubidus (F.C. Baker, 1897) - (MURICIDAE)
- recurvirostris lividus, Vokesimurex recurvirostris lividus (P.P. Carpenter, 1857) - syn of: Vokesimurex lividus (P.P. Carpenter, 1857) - (MURICIDAE)
- recurvirostris rubidus, Vokesimurex recurvirostris rubidus F.C. Baker, 1897 - syn of: Vokesimurex rubidus (F.C. Baker, 1897) - (MURICIDAE)
- recurvirostris sallasi, Vokesimurex recurvirostris sallasi (H.A. Rehder & R.T. Abbott, 1951) - syn of: Vokesimurex sallasi (H.A. Rehder & Abbott, 1951) - (MURICIDAE)
- recurvirostrum, Phalium recurvirostrum J.F. Gmelin, 1791 - syn of: Semicassis granulata (I. von Born, 1778) - (CASSIDAE)
- recurvirostrum, Vokesimurex recurvirostrum (W.J. Broderip, 1833 †) - (MURICIDAE) (FOSSIL)
- recurvum, Rhinoclavis recurvum G.B. Sowerby, 1855 - syn of: Rhinoclavis kochi (R.A. Philippi, 1848) - (CERITHIIDAE)
- recurvum, Suecoceras recurvum Holm † - (ENDOCERATIDAE) (FOSSIL)
- recurvum, Ischadium recurvum (C.S. Rafinesque, 1820) - (MYTILIDAE)
- recurvum, Ovula recurvum G.B. II Sowerby in A. Adams & L.A. Reeve, 1848 - syn of: Phenacovolva recurva (G.B. II Sowerby in A. Adams & L.A. Reeve, 1848) - (OVULIDAE)
- recurvum, Ancylus recurvum H.C. Küster, 1893 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- recurvum, Ancylus recurvum D. Dupuy, 1850 - syn of: Ancylus fluviatilis O.F. Müller, 1774 - (PLANORBIDAE)
- recurvum, Semele recurvum Arkell, 1933 † - (SEMELIDAE) (FOSSIL)
- recurvus, Sphenosphaera recurvus (Ulrich & Scofield, 1897 †) - (BELLEROPHONTIDAE) (FOSSIL)
- recurvus, Rhinoclavis recurvus G.B. II Sowerby, 1855 - syn of: Rhinoclavis sordidula (A.A. Gould, 1849) - (CERITHIIDAE)
- recurvus, Gradiconus recurvus (W.J. Broderip, 1833) - (CONIDAE)
- recurvus, Hypseloconus recurvus Berkey, 1898 † - (HYPSELOCONIDAE) (FOSSIL)
- recurvus, Cypricardites recurvus (T.A. Conrad, 1842 †) - (KALENTERIDAE) (FOSSIL)
- recurvus, Trophon recurvus (F.C.L. Koch in R.A. Philippi, 1846) - (MURICIDAE)
- recurvus, Ancylus recurvus E.C. Von Martens, 1873 - (PLANORBIDAE)
- recurvus helenae, Conus recurvus helenae J.S. Schwengel, 1955 - syn of: Gradiconus scalaris (A. Valenciennes, 1832) - (CONIDAE)
- recussa, Sportella recussa L.C. Glenn, 1904 † - (SPORTELLIDAE) (FOSSIL)
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