Global List - Alphabetic Order

oosteri,   Bochianites  oosteri A.V.M.D. D'Orbigny, 1842 † - syn of: Bochianites  neocomiensis   (A.V.M.D. D'Orbigny, 1842 †) - (BOCHIANITIDAE) (FOSSIL)
ootanii,   Epitonium  ootanii M. Azuma, 1962 - syn of: Epitonium  sakuraii   (J.T. Kuroda & T. Habe, 1961) - (EPITONIIDAE)
ootanii,   Chlamys  ootanii M. Azuma, 1960 - syn of: Laevichlamys  squamosa   (J.F. Gmelin, 1791) - (PECTINIDAE)
opaca,   Venus  opaca W.J. Broderip & G.B. I Sowerby, 1835 - syn of: Eurhomalea  rufa   (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
opaca,   Nerita  opaca P.F. Röding, 1798 - syn of: Nerita  polita   C. Linnaeus, 1758 - (NERITIDAE)
opaca,   Bythinella  opaca (H.T. von Gallenstein, 1848) - syn of: Bythinella  angelitae   M. Haase, T. Wilke & C. Albrecht, 2007 - (BYTHINELLIDAE)
opaca,   Anodonta  opaca I. Lea, 1852 - syn of: Anodonta  grandis   T. Say, 1829 - (UNIONIDAE)
opaca,   Bythinella  opaca G.R. von Frauenfeld, 1857 - syn of: Bythinella  angelitae   M. Haase, T. Wilke & C. Albrecht, 2007 - (BYTHINELLIDAE)
opaca,   Natica  opaca C.A. Récluz, 1851 - syn of: Mammilla  melanostoma   (J.F. Gmelin, 1791) - (NATICIDAE)
opaca,   Chrysallida  opaca C. Hedley, 1906 - syn of: Odostomella  opaca   (C. Hedley, 1906) - (PYRAMIDELLIDAE)
opaca,   Ludwigella  opaca Buckman, 1901 - syn of: Graphoceras  opacum   (Buckman, 1901 †) - (GRAPHOCERATIDAE)
opacus,   Polinices  opacus C.A. Récluz, 1851 - syn of: Mammilla  melanostoma   (J.F. Gmelin, 1791) - (NATICIDAE)
opacus,   Leptochiton  opacus W.H. Dall, 1908 - syn of: Leptochiton  alveolus   (S.L. Lovén, 1846) - (LEPTOCHITONIDAE)
opalescens,   Phidiana  opalescens J.G. Cooper, 1863, 1862 - syn of: Hermissenda  crassicornis   (J.F. von Eschscholtz, 1831) - (FACELINIDAE)
opalescens,   Siphonaria  opalescens C.A. Davis, 1904 - syn of: Siphonaria  alternata   (T. Say, 1826) - (SIPHONARIIDAE)
opalescens,   Mutela  opalescens H.B. Preston, 1910 - syn of: Mutela  alata   (I. Lea, 1864) - (IRIDINIDAE)
opalescens,   Leptinaria  opalescens R.J. Shuttleworth, 1854 - syn of: Lamellaxis  monodon   (C.B. Adams, 1849) - (SUBULINIDAE)
opalescens,   Amerigo  opalescens (S.S. Berry, 1911) - syn of: Doryteuthis  opalescens   (S.S. Berry, 1911) - (LOLIGINIDAE)
opalina,   Dentimargo  opalina R.E.C. Stearns, 1872 - syn of: Dentimargo  eburneola   (T.A. Conrad, 1834) - (MARGINELLIDAE)
opalina,   Pleurotoma  opalina E.A. Smith, 1882 - syn of: Leiocithara  opalina   (E.A. Smith, 1882) - (MANGELIIDAE)
opalina,   Anodonta  opalina H.C. Küster, 1842 - syn of: Anodonta  cygnea   (C. Linnaeus, 1758) - (UNIONIDAE)
opalina,   Helix  opalina C.B. Adams, 1845 - syn of: Proserpinula  infortunata   (T.B. Bland, 1854) - (SAGDIDAE)
opalina,   Tellina  opalina C.U.A. von Salis-Marschlins, 1793 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina C.U.A. von Salis-Marschlins, 1793 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina C.U.A. von Salis-Marschlins, 1793 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina C.U.A. von Salis-Marschlins, 1793 - syn of: Tellina  hyalina   J.F. Gmelin, 1791 - (TELLINIDAE)
opalina,   Tellina  opalina L. Spengler, 1798 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina L. Spengler, 1798 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina L. Spengler, 1798 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina L. Spengler, 1798 - syn of: Tellina  hyalina   J.F. Gmelin, 1791 - (TELLINIDAE)
opalina,   Tellina  opalina J.H. Chemnitz, 1788 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina J.H. Chemnitz, 1788 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina J.H. Chemnitz, 1788 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina J.H. Chemnitz, 1788 - syn of: Tellina  hyalina   J.F. Gmelin, 1791 - (TELLINIDAE)
opalina,   Anodon  opalina J.G. Anthony, 1865 - syn of: Anodonta  grandis   T. Say, 1829 - (UNIONIDAE)
opalina,   Tellina  opalina G.B. II Sowerby, 1868 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina G.B. II Sowerby, 1868 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina G.B. II Sowerby, 1868 - syn of: Angulinides  opalinus   (J.F. Gmelin, 1791) - (TELLINIDAE)
opalina,   Tellina  opalina G.B. II Sowerby, 1868 - syn of: Tellina  hyalina   J.F. Gmelin, 1791 - (TELLINIDAE)
opalinum,   Epitonium  opalinum W.H. Dall, 1927 - syn of: Opaliopsis  opalina   (W.H. Dall, 1927) - (NYSTIELLIDAE)
opalis,   Cantharidus  opalis T. Martyn, 1784 - syn of: Cantharidus  opalus   (T. Martyn, 1784) - (TROCHIDAE)
opalus,   Cantharidus  opalus (T. Martyn, 1784) - syn of: Cantharidus  opalus   (T. Martyn, 1784) - (TROCHIDAE)
opalus,   Cantharidus  opalus A.W.B. Powell, 1933 - syn of: Cantharidus  opalus   (T. Martyn, 1784) - (TROCHIDAE)
opalus,   Perna  opalus J.B.P.A. Lamarck, 1819 - syn of: Perna  viridis   (C. Linnaeus, 1758) - (MYTILIDAE)
opalus,   Pleurotoma  opalus L.A. Reeve, 1845 - syn of: Plagiostropha  opalus   (L.A. Reeve, 1845) - (DRILLIIDAE)
opalus,   Cantharidus  opalus H.H. Suter, 1908 - syn of: Cantharidus  opalus   (T. Martyn, 1784) - (TROCHIDAE)
opalus,   Limax  opalus T. Martyn, 1784 - syn of: Cantharidus  opalus   (T. Martyn, 1784) - (TROCHIDAE)
oparea,   Chondrina  oparea É.A.A. Locard, 1894 - syn of: Chondrina  bigorriensis   C. des Moulins, 1835 - (CHONDRINIDAE)
oparense,   Drupa  oparense J.C. Melvill, 1912 - syn of: Morula  oparensis   (J.C. Melvill, 1912) - (MURICIDAE)
oparica,   Hydrocena  oparica L. Pfeiffer, 1847 - syn of: Omphalotropis  pupoides   (H.E. Anton, 1839) - (ASSIMINEIDAE)
opea,   Patella  opea L.A. Reeve, 1855 - syn of: Lottia  antillarum   (G.B. I Sowerby, 1834) - (LOTTIIDAE)
operanus,   Bulimus  operanus L. Pfeiffer, 1846 - syn of: Opeas  operanum   (L. Pfeiffer, 1846) - (SUBULINIDAE)
opercularis,   Ostrea  opercularis C. Linnaeus, 1758 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Sanguinolaria  opercularis G.B. I Sowerby, 1828 - syn of: Psammotella  cruenta   (J. Lightfoot, 1786) - (PSAMMOBIIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis A. Clement, 1875 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis É.A.A. Locard, 1888 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.G. Jeffreys, 1864 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Pecten  opercularis J.B.P.A. Lamarck, 1819 - syn of: Aequipecten  opercularis   (C. Linnaeus, 1758) - (PECTINIDAE)
opercularis,   Tellina  opercularis G.B. I Sowerby, 1828 - syn of: Psammotella  cruenta   (J. Lightfoot, 1786) - (PSAMMOBIIDAE)
operculata,   Natica  operculata F. Nordsieck, 1973 - syn of: Notocochlis  dillwynii   (B.C.M. Payraudeau, 1826) - (NATICIDAE)
operculata,   Sanguinolaria  operculata J.F. Gmelin, 1791 - syn of: Psammotella  cruenta   (J. Lightfoot, 1786) - (PSAMMOBIIDAE)
operculata,   Tellina  operculata J.F. Gmelin, 1791 - syn of: Psammotella  cruenta   (J. Lightfoot, 1786) - (PSAMMOBIIDAE)
operculata,   Tectonatica  operculata F. Nordsieck, 1973 - syn of: Notocochlis  dillwynii   (B.C.M. Payraudeau, 1826) - (NATICIDAE)
operculus,   Sachites  operculus Z.X. Qian, 1984 † - syn of: Halkieria  operculus   (Z.X. Qian, 1984 †) - (HALKIERIIDAE) (FOSSIL)
operosa,   Aldanella  operosa Rozanov & Missarzhevsky, 1966 † - syn of: Aldanella  attleborensis   (Shaler & Foerste, 1888 †) - (ALDANELLIDAE) (FOSSIL)
operta,   Aplysia  operta R.H. Burne, 1906 - syn of: Aplysia  dactylomela   P.C.A.S.L. Rang, 1828 - (APLYSIIDAE)
ophidiastericola,   Stilifer  ophidiastericola T. Habe, 1951 - syn of: Stilifer  utinomi   T. Habe, 1951 - (EULIMIDAE)
ophioderma,   Ophiodermella  ophioderma W.H. Dall, 1908 - syn of: Ophiodermella  inermis   (L.A. Reeve, 1843) - (BORSONIIDAE)
ophioderma,   Pleurotoma  ophioderma W.H. Dall, 1908 - syn of: Ophiodermella  inermis   (L.A. Reeve, 1843) - (BORSONIIDAE)
ophioderma,   Ischnochiton  ophioderma W.H. Dall, 1919 - syn of: Ischnochiton  dispar   (G.B. I Sowerby in W.J. Broderip & G.B. I Sowerby, 1832) - (ISCHNOCHITONIDAE)
ophiodon,   Dentalium  ophiodon W.H. Dall, 1881 - syn of: Compressidens  ophiodon   (W.H. Dall, 1881) - (PULSELLIDAE)
ophioneus,   Nautilus  ophioneus L. Waagen, 1879 † - syn of: Pselioceras  ophioneus   (L. Waagen, 1879 †) - (GRYPOCERATIDAE) (FOSSIL)
ophonia,   Columbella  ophonia P.L. Duclos, 1846 - syn of: Euplica  varians   (G.B. I Sowerby, 1832) - (COLUMBELLIDAE)
opifex,   Modiolus  opifex T. Say, 1825 - syn of: Gregariella  coralliophaga   (T. Say, 1825) - (MYTILIDAE)
opilina,   Anodonta  opilina I. Lea, 1852 - syn of: Anodonta  cygnea   (C. Linnaeus, 1758) - (UNIONIDAE)
opima,   Microginella  opima C.F. Laseron, 1957 - syn of: Granulina  opima   (C.F. Laseron, 1957) - (MARGINELLIDAE)
opima,   Venus  opima J.F. Gmelin, 1791 - syn of: Marcia  opima   (J.F. Gmelin, 1791) - (VENERIDAE)
opima,   Cystiscus  opima (C.F. Laseron, 1957) - syn of: Granulina  opima   (C.F. Laseron, 1957) - (MARGINELLIDAE)
opimata,   Monachoides  opimata É.A.A. Locard - syn of: Perforatella  incarnata   (O.F. Müller, 1774) - (HYGROMIIDAE)
opimum,   Monoceros  opimum L.H. Hupé, 1854 - syn of: Testallium  cepa   (J. de C. Sowerby, 1846 †) - (PSEUDOLIVIDAE)
opinatum,   Ukhtoceras  opinatum P.A. Zhuravleva, 1972 † - syn of: Ukhtoceras  uchtense   (Holzapfel, 1899 †) - (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
opiniosus,   Onithochiton  opiniosus T. Iredale & A.F.B. Hull, 1932 - syn of: Onithochiton  neglectus   A. de Rochebrune, 1881 - (CHITONIDAE)
opipara,   Glyptosepia  opipara T. Iredale, 1926 - syn of: Sepia  opipara   (T. Iredale, 1926) - (SEPIIDAE)
opiparis,   Melania  opiparis P.M.A. Morelet, 1851 - syn of: Pachychilus  glaphyrus   (P.M.A. Morelet, 1851) - (PACHYCHILIDAE)
opiparus,   Parachiton  opiparus T. Iredale & A.F.B. Hull, 1925 - syn of: Leptochiton  alveolus   (S.L. Lovén, 1846) - (LEPTOCHITONIDAE)
opis,   Charonia  opis P.F. Röding, 1798 - syn of: Charonia  lampas   (C. Linnaeus, 1758) - (RANELLIDAE)
opis,   Buccinum  opis P.F. Röding, 1798 - syn of: Charonia  lampas   (C. Linnaeus, 1758) - (RANELLIDAE)
opistochetos,   Ptychobela  opistochetos R.N. Kilburn, 1989 - syn of: Ptychobela  opisthochetos   R.N. Kilburn, 1989 - (PSEUDOMELATOMIDAE)
opistodon,   Truncatellina  opistodon O.W.H. Reinhardt, 1879 - syn of: Truncatellina  opisthodon   (O.W.H. Reinhardt, 1879) - (VERTIGINIDAE)
oppansus,   Zizyphinus  oppansus É.A.A. Locard, 1898 - syn of: Calliostoma  leptophyma   P. Dautzenberg & H. Fischer, 1896 - (CALLIOSTOMATIDAE)
oppeli,   Alaria  oppeli H. Rolle, 1860 † - syn of: Diarthema  munsterianum   (A.V.M.D. D'Orbigny, 1850 †) - (APORRHAIDAE) (FOSSIL)
oppidi,   Pyrenaearia  oppidi P. Fagot, 1885 - syn of: Pyrenaearia  carascalensis   (A. Michaud, 1831) - (HYGROMIIDAE)
oppilata,   Polygyra  oppilata E.C. Von Martens, 1865 - syn of: Polygyra  implicata   (E.C. Von Martens, 1865) - (POLYGYRIDAE)
oppilata,   Polygyra  oppilata (P.M.A. Morelet, 1849) - syn of: Polygyra  implicata   (E.C. Von Martens, 1865) - (POLYGYRIDAE)
oppilata,   Helix  oppilata P.M.A. Morelet, 1849 - syn of: Polygyra  oppilata   (P.M.A. Morelet, 1849) - (POLYGYRIDAE)
oppilata,   Poligyra  oppilata H.A. Pilsbry, 1910 - syn of: Polygyra  oppilata   (P.M.A. Morelet, 1849) - (POLYGYRIDAE)
opportuna,   Auriculodes  opportuna A.A. Gould - syn of: Auriculodes  pallidum   (G.B. II Sowerby, 1839) - (ELLOBIIDAE)
opposita,   Lyria  opposita T. Iredale, 1937 - syn of: Lyria  pattersonia   (G. Perry, 1811) - (VOLUTIDAE)
opposita,   Helix  opposita C.A. Westerlund, 1898 - syn of: Fruticicola  stoliczkana   (G. Nevill, 1878) - (BRADYBAENIDAE)
opposita,   Sodaliscala  opposita M.E.A. de Boury, 1921 - syn of: Epitonium  oppositum   (M.E.A. de Boury, 1921) - (EPITONIIDAE)
oppressa,   Emarginula  oppressa K.H. Barnard, 1963 - syn of: Emarginula  oppressa   K.H. Barnard, 1963 - (FISSURELLIDAE)
oppressa,   Emarginula  oppressa K.H. Barnard, 1958 - syn of: Emarginula  oppressa   K.H. Barnard, 1963 - (FISSURELLIDAE)
oppressus,   Trochus  oppressus (F.W. Hutton, 1878) - syn of: Coelotrochus  chathamensis   (H.H. Suter, 1897) - (TROCHIDAE)
oppressus,   Trochus  oppressus H.H. Suter, 1907 - syn of: Coelotrochus  chathamensis   (H.H. Suter, 1897) - (TROCHIDAE)
opsimathes,   Lienardia  opsimathes J.C. Melvill & R. Standen, 1903 - syn of: Lienardia  soror   (E.A. Smith, 1882) - (CLATHURELLIDAE)
optabilis,   Eucithara  optabilis G.B. III Sowerby, 1907 - syn of: Eucithara  coronata   (R.B. Hinds, 1843) - (MANGELIIDAE)
optabilis,   Leptoconus  optabilis A. Adams, 1855 - syn of: Gradiconus  philippii   (L.C. Kiener, 1847) - (CONIDAE)
optabilis,   Margarites  optabilis P.P. Carpenter, 1864 - syn of: Lirularia  optabilis   (P.P. Carpenter, 1864) - (TROCHIDAE)
optabilis,   Cythara  optabilis G.B. III Sowerby, 1907 - syn of: Eucithara  coronata   (R.B. Hinds, 1843) - (MANGELIIDAE)
optabilis,   Vexitomina  optabilis R. Murdoch & H.H. Suter, 1906 - syn of: Awateria  optabilis   (R. Murdoch & H.H. Suter, 1906) - (BORSONIIDAE)
optabilis,   Drillia  optabilis R. Murdoch & H.H. Suter, 1906 - syn of: Awateria  optabilis   (R. Murdoch & H.H. Suter, 1906) - (BORSONIIDAE)
optata,   Nassa  optata A.A. Gould, 1860 - syn of: Nassarius  nigellus   (L.A. Reeve, 1854) - (NASSARIIDAE)
optata,   Lucerapex  optata E.A. Smith, 1899 - syn of: Lucerapex  indagatoris   (H.J. Finlay, 1927) - (TURRIDAE)
optima,   Euciroa  optima G.B. III Sowerby, 1894 - syn of: Euciroa  eburnea   (J. Wood-Mason & A. Alcock, 1891) - (EUCIROIDAE)
optima,   Verticordia  optima G.B. III Sowerby, 1894 - syn of: Euciroa  eburnea   (J. Wood-Mason & A. Alcock, 1891) - (EUCIROIDAE)
optima,   Epitonium  optima J.C. Melvill & R. Standen, 1903 - syn of: Amaea  optima   (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
optima,   Bela  optima K.H.J. Thiele, 1925 - syn of: Microdrillia  optima   (K.H.J. Thiele, 1925) - (BORSONIIDAE)
optimum,   Calliostoma  optimum A. de Rochebrune & J.F. Mabille, 1891 - syn of: Calliostoma  nudum   (R.A. Philippi, 1845) - (CALLIOSTOMATIDAE)
optimus,   Antillophos  optimus K. Fraussen & G.T. Poppe, 2005 - syn of: Antillophos  opimus   K. Fraussen & G.T. Poppe, 2005 - (NASSARIIDAE)
optimus,   Conus  optimus G.B. III Sowerby, 1913 - syn of: Fulgiconus  exiguus   (J.B.P.A. Lamarck, 1810) - (CONIDAE)
optiva,   Siphonaria  optiva T. Iredale, 1940 - syn of: Siphonaria  laciniosa   (C. Linnaeus, 1758) - (SIPHONARIIDAE)
optiva,   Turbonilla  optiva S. Nomura, 1937 - syn of: Pyrgiscus  optivus   (S. Nomura, 1937) - (PYRAMIDELLIDAE)
optiva,   Macoma  optiva (M. Yokoyama, 1923 †) - syn of: Macoma  optiva   (M. Yokoyama, 1923 †) - (TELLINIDAE) (FOSSIL)
optiva,   Macoma  optiva I.A. Korobkov, 1958 † - syn of: Macoma  optiva   (M. Yokoyama, 1923 †) - (TELLINIDAE) (FOSSIL)
opulens,   Columbella  opulens L.H. Woolacott, 1957 - syn of: Pyrene  punctata   (J.G. Bruguière, 1789) - (COLUMBELLIDAE)
opulenta,   Tropidoturris  opulenta K.H.J. Thiele, 1925 - syn of: Tropidoturris  scitecosta   (G.B. III Sowerby, 1903) - (BORSONIIDAE)
opuntia,   Okenia  opuntia N. Coleman, 2001 - syn of: Okenia  echinata   K. Baba, 1949 - (GONIODORIDIDAE)
opuntia,   Okenia  opuntia K. Baba, 1960 - syn of: Okenia  echinata   K. Baba, 1949 - (GONIODORIDIDAE)
opuraensis,   Crypta  opuraensis J.A. Bartrum & A.W.B. Powell, 1928 † - syn of: Maoricrypta  radiata   (F.W. Hutton, 1873 †) - (CALYPTRAEIDAE) (FOSSIL)
oradovekaiae,   Omulevia  oradovekaiae Vostokova, 1964 † - syn of: Scalites  oradovekaiae   (Vostokova, 1964 †) - (RAPHISTOMATIDAE) (FOSSIL)
orangica,   Leda  orangica A. de Rochebrune & J.F. Mabille, 1889 - syn of: Neilonella  sulculata   (A.A. Gould, 1852) - (NEILONELLIDAE)
oranica,   Schilderia  oranica J.C.H. Crosse, 1896 - syn of: Schilderia  achatidea   (J.E. Gray in G.B. I Sowerby, 1837) - (CYPRAEIDAE)
oranica,   Alexia  oranica P.M. Pallary, 1900 - syn of: Myosotella  denticulata   (G. Montagu, 1803) - (ELLOBIIDAE)
oranica,   Rissoa  oranica P.M. Pallary, 1900 - syn of: Alvania  scabra   (P.M. Pallary, 1900) - (RISSOIDAE)
orariana,   Ividella  orariana W.H. Dall & P. Bartsch, 1909 - syn of: Ividella  notabilis   (C.B. Adams, 1852) - (PYRAMIDELLIDAE)
orba,   Campylaea  orba M. von Kimakowicz, 1890 - syn of: Campylaea  faustina   (E.A. Rossmässler, 1835) - (HELICIDAE)
orbella,   Crepidula  orbella M. Yokoyama, 1922 - syn of: Ergaea  walshi   (Herrmannsen in L.A. Reeve, 1859) - (CALYPTRAEIDAE)
orbella,   Lucina  orbella A.A. Gould, 1851 - syn of: Diplodonta  orbella   (Gould, 1851) - (UNGULINIDAE)
orbica,   Circe  orbica L.A. Reeve, 1863 - syn of: Circe  tumefacta   G.B. II Sowerby, 1851 - (VENERIDAE)
orbicella,   Goniatites  orbicella J.W. Hall, 1860 † - syn of: Tornoceras  orbicella   (J.W. Hall, 1860 †) - (TORNOCERATIDAE) (FOSSIL)
orbiculare,   Tonna  orbiculare G. Perry, 1811 - syn of: Tonna  dolium   (C. Linnaeus, 1758) - (TONNIDAE)
orbiculare,   Amphidesma  orbiculare L.H. Hupé in C. Gay, 1854 - syn of: Semele  solida   Gray, 1828 - (SEMELIDAE)
orbiculare,   Goniatites  orbiculare G.G. Münster, 1832 † - syn of: Sporadoceras  orbiculare   (G.G. Münster, 1832 †) - (SPORADOCERATIDAE) (FOSSIL)
orbicularis,   Hexabranchus  orbicularis F.D. Abraham, 1877 - syn of: Hexabranchus  sanguineus   (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
orbicularis,   Mytilus  orbicularis P.M. Pallary, 1903 - syn of: Mytilus  galloprovincialis   J.B.P.A. Lamarck, 1819 - (MYTILIDAE)
orbicularis,   Chlamys  orbicularis G.B. II Sowerby, 1842 - syn of: Lissochlamys  exotica   (L.W. Dillwyn, 1817) - (PECTINIDAE)
orbicularis,   Orbicularia  orbicularis G.P. Deshayes, 1839 - syn of: Orbicularia  orbiculata   (W. Wood, 1828) - (PHARIDAE)
orbicularis,   Placuna  orbicularis L. Philipsson, 1788 - syn of: Placuna  placenta   (C. Linnaeus, 1758) - (PLACUNIDAE)
orbicularis,   Placuna  orbicularis L. Philipsson, 1788 - syn of: Placuna  placenta   (C. Linnaeus, 1758) - (PLACUNIDAE)
orbicularis,   Monocondylus  orbicularis P.M.A. Morelet, 1866 - syn of: Pseudodon  cambodjensis   (S.A.A. Petit De La Saussaye, 1865) - (UNIONIDAE)
orbicularis,   Glycymeris  orbicularis K. Martin, 1887 - syn of: Glycymeris  martini   Finlay, 1927 - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis K. Martin, 1887 - syn of: Glycymeris  glycymeris   (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis K. Martin, 1887 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis K. Martin, 1887 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Venus  orbicularis C. Linnaeus, 1758 - syn of: Codakia  orbicularis   (C. Linnaeus, 1758) - (LUCINIDAE)
orbicularis,   Venus  orbicularis C. Linnaeus, 1758 - syn of: Codakia  distinguenda   (G.W. Tryon, 1872) - (LUCINIDAE)
orbicularis,   Anodon  orbicularis P.M. Heude, 1880 - syn of: Sinanodonta  woodiana   (I. Lea, 1834) - (UNIONIDAE)
orbicularis,   Glycymeris  orbicularis E.M. Da Costa, 1778 - syn of: Glycymeris  martini   Finlay, 1927 - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis E.M. Da Costa, 1778 - syn of: Glycymeris  glycymeris   (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis E.M. Da Costa, 1778 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis E.M. Da Costa, 1778 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Elizia  orbicularis W. Wood, 1828 - syn of: Orbicularia  orbiculata   (W. Wood, 1828) - (PHARIDAE)
orbicularis,   Venus  orbicularis auct. non C. Linnaeus, 1758 - syn of: Codakia  orbicularis   (C. Linnaeus, 1758) - (LUCINIDAE)
orbicularis,   Venus  orbicularis auct. non C. Linnaeus, 1758 - syn of: Codakia  distinguenda   (G.W. Tryon, 1872) - (LUCINIDAE)
orbicularis,   Hermaea  orbicularis A. da Costa, 1866 - syn of: Placida  dendritica   (J. Alder & A. Hancock, 1843) - (LIMAPONTIIDAE)
orbicularis,   Lucina  orbicularis C. Linnaeus, 1758 - syn of: Codakia  orbicularis   (C. Linnaeus, 1758) - (LUCINIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Glycymeris  martini   Finlay, 1927 - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Glycymeris  glycymeris   (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Tellina  orbicularis G.B. III Sowerby, 1889 - syn of: Apolymetis  orbicularis   (G.B. III Sowerby, 1889) - (TELLINIDAE)
orbicularis,   Goniatites  orbicularis G.G. Münster, 1832 † - syn of: Sporadoceras  muensteri   (von Buch, 1832 †) - (SPORADOCERATIDAE) (FOSSIL)
orbicularis,   Placuna  orbicularis L. Philipsson, 1788 - syn of: Placuna  placenta   (C. Linnaeus, 1758) - (PLACUNIDAE)
orbicularis,   Placuna  orbicularis L. Philipsson, 1788 - syn of: Placuna  placenta   (C. Linnaeus, 1758) - (PLACUNIDAE)
orbicularis,   Lucina  orbicularis G.P. Deshayes, 1836 † - syn of: Codakia  orbicularis   (C. Linnaeus, 1758) - (LUCINIDAE) (FOSSIL)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Glycymeris  martini   Finlay, 1927 - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Glycymeris  glycymeris   (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Glycymeris  orbicularis G.F. Angas, 1879 - syn of: Tucetona  flabellata   (J.E. Tenison-Woods, 1877) - (GLYCYMERIDIDAE)
orbicularis,   Lyrioschizodus  orbicularis Newell & Boyd, 1975 † - syn of: Lyroschizodus  orbicularis   (Newell & Boyd, 1975 †) - (SCHIZODIDAE) (FOSSIL)
orbicularis,   Isoarca  orbicularis R. Tate, 1896 † - syn of: Joannites  subdiffissus   (Mojsisovics, 1875 †) - (JOANNITIDAE) (FOSSIL)
orbicularis,   Kellia  orbicularis Wood, 1840 † - syn of: Aligena  orbicularis   (Wood, 1840 †) - (LASAEIDAE) (FOSSIL)
orbiculata,   Hemicycla  orbiculata W. Wood, 1828 - syn of: Hemicycla  plicaria   (J.B.P.A. Lamarck, 1816) - (HELICIDAE)
orbiculata,   Axinopsida  orbiculata (G.O. Sars, 1878) - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Axinopsida  orbiculata (G.O. Sars, 1878) - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Axinopsida  orbiculata (G.O. Sars, 1878) - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Axinopsida  orbiculata (G.O. Sars, 1878) - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Dosinia  orbiculata R.W. Dunker, 1877 - syn of: Dosinia  exoleta   (C. Linnaeus, 1758) - (VENERIDAE)
orbiculata,   Thyasira  orbiculata G. Seguenza, 1876 - syn of: Parathyasira  granulosa   (T.A. de M. Monterosato, 1874) - (THYASIRIDAE)
orbiculata,   Scrobicularia  orbiculata L. Spengler, 1793 - syn of: Scrobicularia  plana   (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
orbiculata,   Semele  orbiculata T. Say, 1822 - syn of: Semele  proficua   (R. Pulteney, 1799) - (SEMELIDAE)
orbiculata,   Nassa  orbiculata A. Adams, 1852 - syn of: Nassarius  kraussianus   (R.W. Dunker, 1846) - (NASSARIIDAE)
orbiculata,   Philobrya  orbiculata C. Hedley, 1916 - syn of: Philobrya  sublaevis   J.P.L. Pelseneer, 1903 - (PHILOBRYIDAE)
orbiculata,   Tellina  orbiculata S.A. Renier - syn of: Arcopagia  balaustina   (C. Linnaeus, 1758) - (TELLINIDAE)
orbiculata,   Helicina  orbiculata A.J. Wagner, 1910 - syn of: Olygyra  orbiculata   (T. Say, 1818) - (HELICINIDAE)
orbiculata,   Diplodonta  orbiculata É.A.A. Locard, 1898 - syn of: Diplodonta  brocchii   (G.P. Deshayes, 1850) - (UNGULINIDAE)
orbiculata,   Crepidula  orbiculata W.H. Dall, 1919 - syn of: Crepipatella  orbiculata   (W.H. Dall, 1919) - (CALYPTRAEIDAE)
orbiculata,   Codakia  orbiculata G. Montagu, 1808 - syn of: Ctena  orbiculata   (G. Montagu, 1808) - (LUCINIDAE)
orbiculata,   Axinopsida  orbiculata A.E. Verrill & K.J. Bush, 1898 - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Axinopsida  orbiculata A.E. Verrill & K.J. Bush, 1898 - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Dosinia  orbiculata T. Brown, 1827 - syn of: Dosinia  exoleta   (C. Linnaeus, 1758) - (VENERIDAE)
orbiculata,   Mya  orbiculata L. Spengler, 1793 - syn of: Scrobicularia  plana   (E.M. Da Costa, 1778) - (SCROBICULARIIDAE)
orbiculata,   Venus  orbiculata G. Montagu, 1808 - syn of: Ctena  orbiculata   (G. Montagu, 1808) - (LUCINIDAE)
orbiculata,   Axinopsida  orbiculata A.E. Verrill & K.J. Bush, 1898 - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Axinopsida  orbiculata A.E. Verrill & K.J. Bush, 1898 - syn of: Axinopsida  serricata   (P.P. Carpenter, 1864) - (THYASIRIDAE)
orbiculata,   Macoma  orbiculata O.A. Scarlato, 1981 † - syn of: Macoma  golikovi   O.A. Scarlato & A.I. Kafanov, 1988 - (TELLINIDAE) (FOSSIL)
orbiculatus,   Unio  orbiculatus S.P. Hildreth, 1828 - syn of: Lampsilis  abrupta   T. Say, 1831 - (UNIONIDAE)
orbiculatus,   Stilifer  orbiculatus C. Hedley, 1907 - syn of: Fossarella  orbiculatus   (C. Hedley, 1907) - (VANIKORIDAE)
orbiculum,   Ammonites  orbiculum A.H.E. Beyrich, 1837 † - syn of: Sphaeromanticoceras  orbiculum   (A.H.E. Beyrich, 1837 †) - (GEPHUROCERATIDAE) (FOSSIL)
orbiculus,   Tropicorbis  orbiculus H.B. Baker, 1945 - syn of: Biomphalaria  orbicula   (P.M.A. Morelet, 1849) - (PLANORBIDAE)
orbigniana,   Sepia  orbigniana A.E.J. Férussac, 1826 - syn of: Sepia  orbignyana   A.E.J. Férussac, 1826 - (SEPIIDAE)
orbignianus,   Murex  orbignianus A. Risso, 1826 - syn of: Ocenebra  erinaceus   (C. Linnaeus, 1758) - (MURICIDAE)
orbigny,   Osteodesma  orbigny P. Fischer, 1857 - syn of: Entodesma  brasiliense   (A.A. Gould, 1850) - (LYONSIIDAE)
orbigny,   Haliotis  orbigny O.G. Costa, 1838 - syn of: Scissurella  costata   d'Orbigny, 1824 - (SCISSURELLIDAE)
orbigny,   Biradiolites  orbigny Toucas, 1940 † - syn of: Biradiolites  lameracensis   Toucas, 1909 † - (RADIOLITIDAE) (FOSSIL)
orbignyana,   Patella  orbignyana F. Nordsieck & F.F. Talavera, 1979 - syn of: Patella  ulyssiponensis   J.F. Gmelin, 1791 - (PATELLIDAE)
orbignyana,   Castalia  orbignyana L. Deville & L.H. Hupé, 1850 - syn of: Castalia  orbignyi   (L. Deville & L.H. Hupé, 1850) - (HYRIIDAE)
orbignyana,   Monocondylaea  orbignyana M. Doello-Jurado, 1917 - syn of: Monocondylaea  paraguayana   D'Orbigny, 1835 - (MYCETOPODIDAE)
orbignyana,   Bulla  orbignyana A.E.J. Férussac, 1822 - syn of: Haminoea  orbignyana   (A.E.J. Férussac, 1822) - (HAMINOEIDAE)
orbignyana,   Pleurotomaria  orbignyana d’Archiac & de Verneuil, 1842 † - syn of: Devonorhineoderma  orbignyana   (d’Archiac & de Verneuil, 1842 †) - (GOSSELETINIDAE) (FOSSIL)
orbignyana,   Loxacypraea  orbignyana (J.P.S. Grateloup, 1846 †) - syn of: Loxacypraea  colligens   (F. Sacco, 1894 †) - (CYPRAEIDAE) (FOSSIL)
orbignyana,   Loxacypraea  orbignyana F. Sacco, 1894 † - syn of: Loxacypraea  colligens   (F. Sacco, 1894 †) - (CYPRAEIDAE) (FOSSIL)
orbignyanus,   Murex  orbignyanus A. Risso, 1826 - syn of: Ocenebra  erinaceus   (C. Linnaeus, 1758) - (MURICIDAE)
orbignyanus,   Mytilus  orbignyanus L.H. Hupé in C. Gay, 1854 - syn of: Aulacomya  atra   (J.I. Molina, 1782) - (MYTILIDAE)
orbignyanus,   Posterobranchus  orbignyanus A. de Rochebrune, 1881 - syn of: Navanax  orbignyanus   (A. de Rochebrune, 1881) - (AGLAJIDAE)
orbignyanus,   Ammonites  orbignyanus H.B. Geinitz, 1849 † - syn of: Placenticeras  orbignyanum   (H.B. Geinitz, 1849 †) - (PLACENTICERATIDAE) (FOSSIL)
orbignyanus,   Fusus  orbignyanus Münster, 1841 † - syn of: Soleniscus  orbignyi   (Münster, 1841 †) - (SOLENISCIDAE) (FOSSIL)
orbignyanus,   Goniatites  orbignyanus de Verneuil, 1845 † - syn of: Medlicottia  orbignyana   (de Verneuil, 1845 †) - (MEDLICOTTIIDAE) (FOSSIL)
orbignyanus,   Turbo  orbignyanus d’Archiac & de Verneuil, 1842 † - syn of: Devonorhineoderma  orbignyana   (d’Archiac & de Verneuil, 1842 †) - (GOSSELETINIDAE) (FOSSIL)
orbignyi,   Fossarus  orbignyi G.W. Nowell-Usticke, 1959 - syn of: Fossarus  ambiguus   (C. Linnaeus, 1758) - (PLANAXIDAE)
orbignyi,   Trophon  orbignyi A. Carcelles, 1946 - syn of: Trophon  pelseneeri   E.A. Smith, 1915 - (MURICIDAE)
orbignyi,   Discodoris  orbignyi H. Adams & A. Adams, 1858 - syn of: Montereina  punctifera   (F.D. Abraham, 1877) - (DISCODORIDIDAE)
orbignyi,   Alvania  orbignyi J.V. Audouin, 1826 - syn of: Alvania  dorbignyi   (J.V. Audouin, 1826) - (RISSOIDAE)
orbignyi,   Janthina  orbignyi O.A.L. Mörch, 1860 - syn of: Janthina  janthina   (C. Linnaeus, 1758) - (JANTHINIDAE)
orbignyi,   Mycetopoda  orbignyi H.F.A. von Ihering, 1910 - syn of: Mycetopoda  siliquosa   (J.B. von Spix, 1827) - (MYCETOPODIDAE)
orbignyi,   Fossarus  orbignyi P. Fischer, 1864 - syn of: Fossarus  ambiguus   (C. Linnaeus, 1758) - (PLANAXIDAE)
orbignyi,   Unio  orbignyi L. Deville & L.H. Hupé, 1850 - syn of: Castalia  orbignyi   (L. Deville & L.H. Hupé, 1850) - (HYRIIDAE)
orbignyi,   Acmaea  orbignyi W.H. Dall, 1909 - syn of: Lottia  orbignyi   (W.H. Dall, 1909) - (LOTTIIDAE)
orbignyi,   Epitonium  orbignyi P. Nyst, 1871 - syn of: Epitonium  georgettinum   L.C. Kiener, 1838 - (EPITONIIDAE)
orbignyi,   Rissoina  orbignyi A. Adams, 1851 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi A. Adams, 1851 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi A. Adams, 1851 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi A. Adams, 1851 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Rissoina  orbignyi G. Nevill, 1884 - syn of: Rissoina  dorbignyi   A. Adams, 1851 - (RISSOINIDAE)
orbignyi,   Cavolinia  orbignyi L.F.A. Souleyet, 1852 - syn of: Diacria  quadridentata   (H.M.D. de Blainville, 1821) - (CAVOLINIIDAE)
orbignyi,   Conus  orbignyi D. Röckel, G. Richard & R.G. Moolenbeek, 1995 - syn of: Conasprella  coriolisi   (G. Richard & R.G. Moolenbeek, 1995) - (CONIDAE)
orbignyi,   Conus  orbignyi D. Röckel, G. Richard & R.G. Moolenbeek, 1995 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Conus  orbignyi D. Röckel, G. Richard & R.G. Moolenbeek, 1995 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1973 - syn of: Conasprella  coriolisi   (G. Richard & R.G. Moolenbeek, 1995) - (CONIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1973 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1973 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Doris  orbignyi H. Adams & A. Adams, 1858 - syn of: Montereina  punctifera   (F.D. Abraham, 1877) - (DISCODORIDIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1975 - syn of: Conasprella  coriolisi   (G. Richard & R.G. Moolenbeek, 1995) - (CONIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1975 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Conus  orbignyi R.N. Kilburn, 1975 - syn of: Conasprella  elokismenos   (R.N. Kilburn, 1975) - (CONIDAE)
orbignyi,   Fusus  orbignyi L.H. Hupé, 1854 † - syn of: Latirolagena  orbignyi   (L.H. Hupé, 1854 †) - (FASCIOLARIIDAE) (FOSSIL)
orbignyi,   Natica  orbignyi L.H. Hupé, 1854 † - syn of: Natica  subsolida   A.V.M.D. D'Orbigny, 1847 † - (NATICIDAE) (FOSSIL)
orbis,   Theba  orbis J.G. Hidalgo, 1875 - syn of: Theba  pisana   (O.F. Müller, 1774) - (HELICIDAE)
orbita,   Aenator  orbita A.N. Golikov & B.I. Sirenko, 1988 - syn of: Aeneator  recens   (R.K. Dell, 1951) - (BUCCINIDAE)
orbita,   Vasticardium  orbita (L.A. Reeve, 1845) - syn of: Vasticardium  hawaiensis   W.H. Dall, P. Bartsch & H.A. Rehder, 1939 - (CARDIIDAE)
orbita,   Acrosterigma  orbita W.H. Dall, P. Bartsch & H.A. Rehder, 1939 - syn of: Vasticardium  hawaiensis   W.H. Dall, P. Bartsch & H.A. Rehder, 1939 - (CARDIIDAE)
orbita,   Trachycardium  orbita W.J. Broderip & G.B. I Sowerby, 1833 - syn of: Vasticardium  orbita   (L.A. Reeve, 1845) - (CARDIIDAE)
orbita,   Vasticardium  orbita W.H. Dall, P. Bartsch & H.A. Rehder, 1939 - syn of: Vasticardium  hawaiensis   W.H. Dall, P. Bartsch & H.A. Rehder, 1939 - (CARDIIDAE)
orbita,   Cardium  orbita L.A. Reeve, 1845 - syn of: Vasticardium  orbita   (L.A. Reeve, 1845) - (CARDIIDAE)
orbitatus,   Conus  orbitatus L.A. Reeve, 1843 - syn of: Asprella  sulcata   (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
orbitosus,   Sakhaites  orbitosus Vozin, 1972 † - syn of: Sakhaites  vronskyi   (A.M. Popov, 1961 †) - (OPHICERATIDAE) (FOSSIL)
orbus,   Unio  orbus É.A.A. Locard, 1889 - syn of: Unio  arcuatus   N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)