- giemellorum, Skenea giemellorum L. Romani, C. Bogi & S. Bartolini, 2015 - (SKENEIDAE)
- giengensis, Klikia giengensis (Klein, 1846) † - (HELICIDAE) (FOSSIL)
- giennensis, Islamia henrici giennensis B. Arconada & M.A. Ramos, 2006 - (HYDROBIIDAE)
- giffardi, Rhinoclavis giffardi W.H. Dall, 1892 - syn of: Rhinoclavis aspera (C. Linnaeus, 1758) - (CERITHIIDAE)
- giffordi, Baylea giffordi A.H. Worthen, 1884 † - (GOSSELETINIDAE) (FOSSIL)
- Giffordius, Genus Giffordius H.A. Pilsbry, 1930 (POLYGYRIDAE)
- Gifuchiton, Genus Gifuchiton Hoare & Karasawa, 2008 † (LEPTOCHITONIDAE) (FOSSIL)
- gigacostata, Eratoidea gigacostata L. Bozzetti, 2016 - (MARGINELLIDAE)
- giganta, Protactoclymenia giganta Becker & al., 2002 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- Gigantaxis, Subgenus Tayloria (Gigantaxis) J.R. le B. Tomlin, 1930 (STREPTAXIDAE)
- gigantea, Achatinella gigantea W. Newcomb - syn of: Amastra magna (C.B. Adams, 1850) - (ACHATINELLIDAE)
- gigantea, Trochactaeon gigantea (J. de C. Sowerby, 1832 †) - (ACTEONELLIDAE) (FOSSIL)
- gigantea, Tornatella gigantea R.W. Dunker † - syn of: Acteon giganteum (R.W. Dunker †) - (ACTEONIDAE) (FOSSIL)
- gigantea, Leucotina gigantea (R.W. Dunker, 1877) - (AMATHINIDAE)
- gigantea, Anomalodonta gigantea Miller, 1874 † - (AMBONYCHIIDAE) (FOSSIL)
- gigantea, Aplysia gigantea G.B. II Sowerby, 1869 - (APLYSIIDAE)
- gigantea, Pseudaneitea gigantea (H.H. Suter, 1909) - (ATHORACOPHORIDAE)
- gigantea, Maitaia gigantea (De Koninck, 1877 †) - (ATOMODESMATIDAE) (FOSSIL)
- gigantea, Cochlostyla fulgetrum gigantea M. Smith, 1932 - (BRADYBAENIDAE)
- gigantea, Chauvetia gigantea P.G. Oliver, E. Rolán & J. Pelorce, 2008 - (BUCCINIDAE)
- gigantea, Sigapatella gigantea (A.G. Beu, 1970 †) - (CALYPTRAEIDAE) (FOSSIL)
- gigantea, Basedowena gigantea G.A. Solem, 1993 - (CAMAENIDAE)
- gigantea, Merica gigantea (Y.C. Lee & T.C. Lan, 2002) - (CANCELLARIIDAE)
- gigantea, Neocaprina gigantea (Plenicar, 1960 †) - (CAPRINULIDAE) (FOSSIL)
- gigantea, Neocaprina gigantea (Gemmellaro 1865) † - (CAPRINULIDAE) (FOSSIL)
- gigantea, Caprinula gigantea R.P. Whitfield, 1807 † - syn of: Titanosarcolites giganteus (R.P. Whitfield, 1807 †) - (CAPRINULIDAE) (FOSSIL)
- gigantea, Galeodea gigantea G.S. Coen, 1920 - syn of: Galeodea echinophora (C. Linnaeus, 1758) - (CASSIDAE)
- gigantea, Strophiops gigantea C.J. Maynard & W.F. Clapp, 1921 - syn of: Strophiops ajax C.J. Maynard, 1924 - (CERIONIDAE)
- gigantea, Cerion ritchiei gigantea (C.J. Maynard, 1894) - (CERIONIDAE)
- gigantea, Cerion mumia gigantea M.I. Sánchez Roig, 1951 - (CERIONIDAE)
- gigantea, Chama gigantea G. Perry, 1811 - syn of: Tridacna gigas (C. Linnaeus, 1758) - (CHAMIDAE)
- gigantea, Chondrina tenuimarginata gigantea (E.A. Rossmässler, 1853) - (CHONDRINIDAE)
- gigantea, Grandinenia maroskoi gigantea H. Nordsieck, 2012 - (CLAUSILIIDAE)
- gigantea, Cucullaea gigantea T.A. Conrad, 1862 † - (CUCULLAEIDAE) (FOSSIL)
- gigantea, Cuspidaria gigantea B. Prashad, 1932 - (CUSPIDARIIDAE)
- gigantea, Myonera gigantea (A.E. Verrill, 1884) - (CUSPIDARIIDAE)
- gigantea, Gisortia gigantea (Münster, 1828 †) - (CYPRAEIDAE) (FOSSIL)
- gigantea, Naticopsis gigantea J.W. Hall & R.P. Whitfield, 1873 † - syn of: Floyda concentrica W.H. Webster, 1905 † - (DELPHINULOPSIDAE) (FOSSIL)
- gigantea, Diaulula gigantea L.S.R. Bergh, 1905 - syn of: Sebadoris nubilosa (W.H. Pease, 1871) - (DISCODORIDIDAE)
- gigantea, Donaldina gigantea Heidelberger, 2001 † - (DONALDINIDAE) (FOSSIL)
- gigantea, Amphiscapha gigantea E.L. Yochelson, 1956 † - (EUOMPHALIDAE) (FOSSIL)
- gigantea, Pleuroploca gigantea L.C. Kiener, 1840 - syn of: Triplofusus giganteus (L.C. Kiener, 1840) - (FASCIOLARIIDAE)
- gigantea, Cranopsis gigantea M.M. Schepman, 1908 - (FISSURELLIDAE)
- gigantea, Emarginula gigantea G.T. Poppe, 2008 - (FISSURELLIDAE)
- gigantea, Gastrochaena gigantea G.P. Deshayes, 1830 - syn of: Gastrochaena cuneiformis L. Spengler, 1783 - (GASTROCHAENIDAE)
- gigantea, Gastrochaena cuneiformis gigantea G.P. Deshayes, 1830 - (GASTROCHAENIDAE)
- gigantea, Glycymeris gigantea L.A. Reeve, 1843 - (GLYCYMERIDIDAE)
- gigantea, Schizolopha gigantea Ulrich & Scofield, 1897 † - syn of: Paupospira moorei (Ulrich & Scofield, 1897 †) - (GOSSELETINIDAE) (FOSSIL)
- gigantea, Gryphaea gigantea Sowerby, 1823 † - (GRYPHAEIDAE) (FOSSIL)
- gigantea, Haliotis gigantea J.F. Gmelin, 1791 - (HALIOTIDAE)
- gigantea, Haliotis gigantea K.T. Menke, 1843 - syn of: Haliotis rubra conicopora F. Péron, 1816 - (HALIOTIDAE)
- gigantea, Halobia gigantea Smith, 1927 † - (HALOBIIDAE) (FOSSIL)
- gigantea, Helix gigantea C. Porro, 1838 - syn of: Helix pomatia C. Linnaeus, 1758 - (HELICIDAE)
- gigantea, Panomya gigantea S. Kanno, 1957 - syn of: Panomya priapus (G.T. Tilesius, 1822) - (HIATELLIDAE)
- gigantea, Holopea gigantea R.N. Nelson, 1963 † - (HOLOPEIDAE) (FOSSIL)
- gigantea, Leviathania gigantea (Makowsky, 1874 †) - (LEVIATHANIIDAE) (FOSSIL)
- gigantea, Plagiostoma gigantea Boehm, 1911 † - (LIMIDAE) (FOSSIL)
- gigantea, Lima gigantea J.E. Gray, 1825 - syn of: Crassadoma gigantea (J.E. Gray, 1825) - (LIMIDAE)
- gigantea, Paupospira gigantea Twenhofel, 1928 † - syn of: Paupospira moorei (Ulrich & Scofield, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- gigantea, Lottia gigantea Sowerby, 1834 - (LOTTIIDAE)
- gigantea, Loxonema gigantea W.H. Webster, 1888 † - syn of: Westerna gigantea (W.H. Webster, 1888 †) - (LOXONEMATIDAE) (FOSSIL)
- gigantea, Nipponothracia gigantea (T. Shikama, 1968 †) - (LUCINIDAE) (FOSSIL)
- gigantea, Pseudomiltha gigantea (G.P. Deshayes, 1825 †) - (LUCINIDAE) (FOSSIL)
- gigantea, Lucinella gigantea T. Prime, 1852 - syn of: Sphaerium simile T. Say, 1817 - (LUCINIDAE)
- gigantea, Spisula gigantea J.B.P.A. Lamarck, 1818 - syn of: Hemimactra solidissima (L.W. Dillwyn, 1817) - (MACTRIDAE)
- gigantea, Malletia gigantea (E.A. Smith, 1875) - (MALLETIIDAE)
- gigantea, Obesotoma gigantea (O.A.L. Mörch, 1869) - (MANGELIIDAE)
- gigantea, Margarites gigantea W. Leche, 1878 - syn of: Margarites olivaceus (T. Brown, 1827) - (MARGARITIDAE)
- gigantea, Megateuthis gigantea (von Schlotheim, 1820 †) - (MEGATEUTHIDIDAE) (FOSSIL)
- gigantea, Melanopsis narzolina gigantea Robles, 1975 † - (MELANOPSIDAE) (FOSSIL)
- gigantea, Ziba gigantea (L.A. Reeve, 1844) - (MITRIDAE)
- gigantea, Wiltshireia gigantea (Buckman) † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- gigantea, Hormotoma gigantea (Billings, 1857 †) - (MURCHISONIIDAE) (FOSSIL)
- gigantea, Purpura gigantea L.A. Reeve, 1846 - syn of: Stramonita haemastoma (C. Linnaeus, 1767) - (MURICIDAE)
- gigantea, Purpura gigantea P. Calcara, 1840 - syn of: Stramonita haemastoma (C. Linnaeus, 1767) - (MURICIDAE)
- gigantea, Lithophaga gigantea Stuckenberg, 1898 † - (MYTILIDAE) (FOSSIL)
- gigantea, Modiola gigantea S. Clessin, 1889 - syn of: Modiolus modiolus (C. Linnaeus, 1758) - (MYTILIDAE)
- gigantea, Nerinea gigantea D'Hombres-Firmas, 1838 † - syn of: Eunerinea gigantea (D'Hombres-Firmas, 1838 †) - (NERINEIDAE) (FOSSIL)
- gigantea, Eunerinea gigantea (D'Hombres-Firmas, 1838 †) - (NERINELLIDAE) (FOSSIL)
- gigantea, Anolax gigantea I. Lea, 1833 † - syn of: Bullia altilis (T.A. Conrad, 1832 †) - (OLIVIDAE) (FOSSIL)
- gigantea, Takasagovolva gigantea M. Azuma, 1974 - (OVULIDAE)
- gigantea, Westerna gigantea (W.H. Webster, 1888 †) - (PALAEOTROCHIDAE) (FOSSIL)
- gigantea, Floyda gigantea J.W. Hall & R.P. Whitfield, 1873 † - syn of: Floyda concentrica W.H. Webster, 1905 † - (PALAEOTROCHIDAE) (FOSSIL)
- gigantea, Crassadoma gigantea (J.E. Gray, 1825) - (PECTINIDAE)
- gigantea, Nipponoclava gigantea (G.B. Sowerby, 1888) - (PENICILLIDAE)
- gigantea, Pholadomya gigantea Sowerby, 1836 † - (PHOLADOMYIDAE) (FOSSIL)
- gigantea, Volutomorpha gigantea B. Wade, 1926 † - (PHOLIDOTOMIDAE) (FOSSIL)
- gigantea, Holandriana gigantea (J.R. Bourguignat, 1884) - (PLEUROCERIDAE)
- gigantea, Melanella gigantea J.R. Bourguignat, 1884 - syn of: Holandriana gigantea (J.R. Bourguignat, 1884) - (PLEUROCERIDAE)
- gigantea, Chondrothyretes impressa gigantea (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- gigantea, Ascheria gigantea (S. Kiel & al., 2008 †) - (PROVANNIDAE) (FOSSIL)
- gigantea, Pseudomonotis gigantea L. Waagen, 1881 † - (PSEUDOMONOTIDAE) (FOSSIL)
- gigantea, Syrnola gigantea A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- gigantea, Egilina gigantea E. Saurin, 1958 - (PYRAMIDELLIDAE)
- gigantea, Odostomia gigantea R.W. Dunker, 1877 - syn of: Leucotina casta (A. Adams, 1853) - (PYRAMIDELLIDAE)
- gigantea, Ranella gigantea J.B.P.A. Lamarck, 1816 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea, Schizoglossa gigantea A.W.B. Powell, 1930 - (RHYTIDIDAE)
- gigantea, Rissoina gigantea (G.P. Deshayes, 1848) - (RISSOINIDAE)
- gigantea, Rostellaria gigantea H.B. Geinitz, 1842 † - (ROSTELLARIIDAE) (FOSSIL)
- gigantea, Euglandina gigantea H.A. Pilsbry, 1926 - (SPIRAXIDAE)
- gigantea, Rhodea gigantea A. Mousson, 1873 - (SUBULINIDAE)
- gigantea, Fusispira gigantea Wilson, 1938 † - (SUBULITIDAE) (FOSSIL)
- gigantea, Furcella gigantea E. Home, 1806 - syn of: Kuphus polythalamia (C. Linnaeus, 1767) - (TEREDINIDAE)
- gigantea, Teredo gigantea E. Home, 1806 - syn of: Kuphus polythalamia (C. Linnaeus, 1767) - (TEREDINIDAE)
- gigantea, Morchiella gigantea (G.P. Deshayes, 1850) - (TORNIDAE)
- gigantea, Tochuina gigantea L.S.R. Bergh, 1904 - syn of: Tochuina tetraquetra (P.S. Pallas, 1788) - (TRITONIIDAE)
- gigantea, Pleurotoma gigantea O.A.L. Mörch, 1869 - syn of: Obesotoma gigantea (O.A.L. Mörch, 1869) - (TURRIDAE)
- gigantea, Anodonta gigantea I. Lea, 1838 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- gigantea, Magnonaias gigantea D.W. Barnes, 1823 - syn of: Magnonaias nervosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- gigantea, Anodonta gigantea É.A.A. Locard - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- gigantea, Saxidomus gigantea (G.P. Deshayes, 1839) - (VENERIDAE)
- gigantea, Venerupis gigantea G.P. Deshayes, 1839 - syn of: Saxidomus gigantea (G.P. Deshayes, 1839) - (VENERIDAE)
- gigantea, Venus gigantea J.F. Gmelin, 1791 - syn of: Macrocallista nimbosa (D.C. Solander, 1786) - (VENERIDAE)
- gigantea, Periglypta gigantea R.A. Philippi, 1844 - syn of: Dosinia ponderosa Gray, 1838 - (VENERIDAE)
- gigantea, Stellaria gigantea (M.M. Schepman, 1909) - (XENOPHORIDAE)
- gigantea, Stellaria gigantea M.M. Schepman, 1909 - syn of: Stellaria gigantea (M.M. Schepman, 1909) - (XENOPHORIDAE)
- gigantea, Xenophora gigantea M.M. Schepman, 1909 - syn of: Stellaria gigantea (M.M. Schepman, 1909) - (XENOPHORIDAE)
- gigantea atlantica, Ranella gigantea atlantica T.A. de M. Monterosato, 1890 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea curvicauda, Ranella gigantea curvicauda G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea dilatata, Ranella gigantea dilatata G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea duplonodosum, Ranella gigantea duplonodosum F. Settepassi, 1970 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea exile, Ranella gigantea exile F. Settepassi, 1970 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea inflatum, Ranella gigantea inflatum F. Settepassi, 1970 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea intusdentata, Ranella gigantea intusdentata G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea magnifica, Ranella gigantea magnifica G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea nodosecarinata, Ranella gigantea nodosecarinata G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea nodosum, Ranella gigantea nodosum F. Settepassi, 1970 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea oceanica, Ranella gigantea oceanica G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea rarituberculatum, Ranella gigantea rarituberculatum F. Settepassi, 1970 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantea sieboldii, Haliotis gigantea sieboldii L.A. Reeve, 1846 - (HALIOTIDAE)
- gigantea tenuis, Ranella gigantea tenuis G.S. Coen, 1941 - syn of: Ranella olearium (C. Linnaeus, 1758) - (RANELLIDAE)
- gigantensis, Naesiotus gigantensis C.C. Christensen & W.B. Miller, 1977 - (BULIMULIDAE)
- giganteum, Abyssochrysos giganteum S. Kiel & al., 2008 † - (ABYSSOCHRYSIDAE) (FOSSIL)
- giganteum, Acteon giganteum (R.W. Dunker †) - (ACTEONIDAE) (FOSSIL)
- giganteum, Ancyloceras giganteum Yabe & Shimizu, 1931 † - (ANCYLOCERATIDAE) (FOSSIL)
- giganteum, Ammonitoceras giganteum Kakabadze & Hoedemaeker, 2004 † - (ANCYLOCERATIDAE) (FOSSIL)
- giganteum, Fremontoceras giganteum Flower, 1952 † - (APSIDOCERATIDAE) (FOSSIL)
- giganteum, Crucibulum giganteum Gardner, 1877 † - (CALYPTRAEIDAE) (FOSSIL)
- giganteum, Campanile giganteum (J.B.P.A. Lamarck, 1822 †) - (CAMPANILIDAE) (FOSSIL)
- giganteum, Bittium giganteum P. Bartsch, 1911 - (CERITHIIDAE)
- giganteum, Dentalium giganteum Sowerby, 1846 † - (DENTALIIDAE) (FOSSIL)
- giganteum, Austiniceras giganteum Anderson, 1958 † - (DESMOCERATIDAE) (FOSSIL)
- giganteum, Bythiospeum charpyi giganteum R. Bernasconi, 1969 - (HYDROBIIDAE)
- giganteum, Catyrephoceras giganteum (C.H. Blake, 1882 †) - (LECHRITROCHOCERATIDAE) (FOSSIL)
- giganteum, Plagiostoma giganteum Sowerby, 1814 † - (LIMIDAE) (FOSSIL)
- giganteum, Farcimen bituberculatum giganteum C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- giganteum, Incidostoma giganteum (L.A. Reeve, 1842) - (NEOCYCLOTIDAE)
- giganteum, Stacheoceras giganteum Ehiro, 2006 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- giganteum, Oriostoma giganteum (Lindström, 1884 †) - (ORIOSTOMATIDAE) (FOSSIL)
- giganteum, Paracenoceras giganteum (A.V.M.D. D'Orbigny, 1842 †) - (PARACENOCERATIDAE) (FOSSIL)
- giganteum, Cyclonema giganteum Lindström, 1884 † - syn of: Oriostoma giganteum (Lindström, 1884 †) - (PLATYCERATIDAE) (FOSSIL)
- giganteum, Lithidion giganteum E. Neubert, 2002 - (POMATIIDAE)
- giganteum, Cyclostoma giganteum L. Pfeiffer, 1848 - syn of: Incidostoma confusum (E.R. Sykes, 1894) - (POMATIIDAE)
- giganteum, Cyclostoma giganteum L.A. Reeve, 1842 - syn of: Incidostoma giganteum (L.A. Reeve, 1842) - (POMATIIDAE)
- giganteum, Mooreoceras giganteum Clifton, 1942 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- giganteum, Spyroceras giganteum Flower, 1945 † - (SPYROCERATIDAE) (FOSSIL)
- giganteum, Allumettoceras giganteum Flower, 1947 † - (TRIPTEROCERATIDAE) (FOSSIL)
- giganteum, Umbonium giganteum (R.P. Lesson, 1831) - (TROCHIDAE)
- giganteum, Crenuloceras giganteum Flower, 1968 † - (TROCHOLITIDAE) (FOSSIL)
- giganteum, Onustus giganteum M.M. Schepman, 1909 - syn of: Stellaria gigantea (M.M. Schepman, 1909) - (XENOPHORIDAE)
- giganteus, Titanosarcolites giganteus (R.P. Whitfield, 1807 †) - (ANTILLOCAPRINIDAE) (FOSSIL)
- giganteus, Ceratosiphon giganteus T. Kase, 1984 † - (APORRHAIDAE) (FOSSIL)
- giganteus, Aviculopecten giganteus Chao, 1929 † - (AVICULOPECTINIDAE) (FOSSIL)
- giganteus, Belemnites giganteus von Schlotheim, 1820 † - syn of: Megateuthis gigantea (von Schlotheim, 1820 †) - (BELEMNITELLIDAE) (FOSSIL)
- giganteus, Capulus giganteus T. Habe - (CAPULIDAE)
- giganteus, Dendronotus giganteus O'Donoghue, 1921 - syn of: Dendronotus iris J.G. Cooper, 1863 - (DENDRONOTIDAE)
- giganteus, Heteronodosus giganteus Pan & Zhang, 1983 † - (EUOMPHALIDAE) (FOSSIL)
- giganteus, Triplofusus giganteus (L.C. Kiener, 1840) - (FASCIOLARIIDAE)
- giganteus, Gigantocapulus giganteus (A. Schmidt, 1873 †) - (GIGANTOCAPULIDAE) (FOSSIL)
- giganteus, Radiodiscus giganteus W.K. Weyrauch, 1958 - (HELICODISCIDAE)
- giganteus, Palaeomphalus giganteus Kobayashi, 1959 † - syn of: Scalites keizanensis O. Kobayashi, 1934 † - (HELICOTOMIDAE) (FOSSIL)
- giganteus, Torreites giganteus Philip & Platel, 1998 † - (HIPPURITIDAE) (FOSSIL)
- giganteus, Heterochiton giganteus (Scalia, 1903 †) - (ISCHNOCHITONIDAE) (FOSSIL)
- giganteus, Leptochiton giganteus H.F. Nierstrasz, 1905 - syn of: Leptochiton alveolus (S.L. Lovén, 1846) - (LEPTOCHITONIDAE)
- giganteus, Acanthopecten giganteus C. Chen & al., 1974 † - (LIMIPECTINIDAE) (FOSSIL)
- giganteus, Margarites giganteus (W. Leche, 1878) - (MARGARITIDAE)
- giganteus, Gigantites giganteus (Sowerby, J) † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- giganteus, Chorus giganteus (R.P. Lesson, 1831) - (MURICIDAE)
- giganteus, Anodontites trapesialis giganteus (J.B. von Spix & J.A. Wagner, 1827) - (MYCETOPODIDAE)
- giganteus, Modiolus giganteus F.A. von Quenstedt, 1857 † - (MYTILIDAE) (FOSSIL)
- giganteus, Mytilus edulis giganteus Wood, 1874 - (MYTILIDAE)
- giganteus, Nautilus giganteus A.V.M.D. D'Orbigny, 1842 † - syn of: Paracenoceras hexagonum (Sowerby, 1826 †) - (NAUTILIDAE) (FOSSIL)
- giganteus, Liguus blainianus giganteus M.I. Sánchez Roig, 1951 - (ORTHALICIDAE)
- giganteus, Chimbuites giganteus E. Matsumoto & Skwarko, 1993 † - (PACHYDISCIDAE) (FOSSIL)
- giganteus, Camptonectes giganteus Arkell, 1926 † - (PECTINIDAE) (FOSSIL)
- giganteus, Binatisphinctes giganteus Gérard & Contaut, 1936 † - (PERISPHINCTIDAE) (FOSSIL)
- giganteus, Pileolus giganteus A. de Rochebrune, 1863 † - (PILEOLIDAE) (FOSSIL)
- giganteus, Neocraspedites giganteus Imlay, 1960 † - (POLYPTYCHITIDAE) (FOSSIL)
- giganteus, Scalites giganteus Kobayashi, 1959 † - syn of: Scalites keizanensis O. Kobayashi, 1934 † - (RAPHISTOMATIDAE) (FOSSIL)
- giganteus, Exochorhynchus giganteus Astaf'yeva-Urbaytis, 1981 † - (SANGUINOLITIDAE) (FOSSIL)
- giganteus, Scaphander lignarius giganteus A. Risso, 1826 - (SCAPHANDRIDAE)
- giganteus, Sinotitanoceras giganteus Pan, 1983 † - (TAINOCERATIDAE) (FOSSIL)
- giganteus, Alaskadiscus giganteus Twenhofel, 1928 † - (TROPIDODISCIDAE) (FOSSIL)
- giganteus, Unionelloides giganteus (D. Mongin, 1963 †) - (UNIONIDAE) (FOSSIL)
- giganteus, Cuneopsis giganteus D. Mongin, 1963 † - syn of: Unionelloides giganteus (D. Mongin, 1963 †) - (UNIONIDAE) (FOSSIL)
- giganteus, Anodon giganteus J.B. von Spix & J.A. Wagner, 1827 - syn of: Anodontites trapesialis giganteus (J.B. von Spix & J.A. Wagner, 1827) - (UNIONIDAE)
- giganteus, Macroceramus giganteus M.I. Sánchez Roig - (UROCOPTIDAE)
- giganteus, Vermetus giganteus Martin, 1879 † - (VERMETIDAE) (FOSSIL)
- giganteus, Vermetus giganteus J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Ceraesignum maximum (G.B. I Sowerby, 1825) - (VERMETIDAE)
- giganteus, Vaginulus giganteus H.H. Godwin-Austen - (VERONICELLIDAE)
- gigantia, Mesalia gigantia Awad & Abed, 1967 † - (TURRITELLIDAE) (FOSSIL)
- gigantica, Glycymerita gigantica Kanjilal & Srinivasan, 2002 † - (GLYCYMERIDIDAE) (FOSSIL)
- gigantica, Gigantostrea gigantica (D.C. Solander in G. Brander, 1766 †) - (OSTREIDAE) (FOSSIL)
- gigantica, Ostrea gigantica D.C. Solander in G. Brander, 1766 † - syn of: Gigantostrea gigantica (D.C. Solander in G. Brander, 1766 †) - (OSTREIDAE) (FOSSIL)
- gigantica, Bucardiomya gigantica Jaitly, 2013 † - (PHOLADOMYIDAE) (FOSSIL)
- gigantica, Cyprimeria gigantica D.C. Solander in G. Brander, 1766 † - syn of: Gigantostrea gigantica (D.C. Solander in G. Brander, 1766 †) - (VENERIDAE) (FOSSIL)
- giganticus, Palaeostylus giganticus Winters, 1963 † - (PALAEOSTYLIDAE) (FOSSIL)
- giganticus, Taemasotrochus giganticus Tassell, 1982 † - (PSEUDOPHORIDAE) (FOSSIL)
- Gigantidas, Genus Gigantidas R. von Cosel & B.A. Marshall, 2003 (MYTILIDAE)
- Gigantidus, syn of: Genus Gigantidas R. von Cosel & B.A. Marshall, 2003 (MYTILIDAE)
- gigantis, Durangites gigantis Tavera, 1985 † - syn of: Protacanthodiscus andreaei Kilian, 1889 † - (HIMALAYITIDAE) (FOSSIL)
- gigantissima, Chauvetia gigantissima P.G. Oliver & E. Rolán, 2009 - (BUCCINIDAE)
- gigantissima, Notomya gigantissima C.O. Waterhouse, 1969 † - (EDMONDIIDAE) (FOSSIL)
- gigantissima, Striostrea gigantissima (J. Finch, 1824 †) - (OSTREIDAE) (FOSSIL)
- Gigantites, Genus Gigantites Buckman, 1921 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- Gigantocallista, Genus Gigantocallista Takagi, 1990 † (VENERIDA (UNASSIGNED)) (FOSSIL)
- GIGANTOCAPULIDAE Beu, 2007 † - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-VANIKOROIDEA [Superfamily]) (FOSSIL)
- Gigantocapulus, Genus Gigantocapulus Hayami & Kanie, 1980 † (GIGANTOCAPULIDAE) (FOSSIL)
- Gigantocyclus, Genus Gigantocyclus Termier & Termier, 1977 † (LUCINIDAE) (FOSSIL)
- Gigantocypraea, Subgenus Zoila (Gigantocypraea) F.A. Schilder, 1927 (CYPRAEIDAE)
- gigantogaleatus, Arcestes gigantogaleatus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- Gigantogonia, Genus Gigantogonia Cossmann, 1909 † (COELOSTYLINIDAE) (FOSSIL)
- gigantoides, Haliotis gigantoides Yabe & K.M. Hatai, 1941 † - (HALIOTIDAE) (FOSSIL)
- gigantoides, Modiolus gigantoides A.A. Olsson, 1914 † - (MYTILIDAE) (FOSSIL)
- Gigantomilax, Genus Gigantomilax O. Böttger, 1883 (LIMACIDAE)
- gigantonodus, Euomphalus gigantonodus Wang, 1985 † - syn of: Cylicioscapha multinodosa Pan, 1983 † - (EUOMPHALIDAE) (FOSSIL)
- Gigantonotum, syn of: Genus Pleurobranchella K.H.J. Thiele, 1925 (PLEUROBRANCHAEIDAE)
- Gigantopecten, Genus Gigantopecten Dall, 1912 † (PECTINIDAE) (FOSSIL)
- Gigantopelta, Genus Gigantopelta Chen, Linse & al., 2015 (PELTOSPIRIDAE)
- Gigantostrea, Genus Gigantostrea F. Sacco, 1897 † (OSTREIDAE) (FOSSIL)
- gigantulus, Nassarius gigantulus G. Bonelli in O.G. Michelotti, 1840 † - (NASSARIIDAE) (FOSSIL)
- gigantum, Carbactinoceras gigantum Liang Xiluo & Wang Mingqian, 1991 † - (CARBACTINOCERATIDAE) (FOSSIL)
- gigantum, Pseudogastrioceras gigantum J.K. Zhao & al., 1978 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- gigantum, Neotainoceras gigantum Zheng, 1984 † - (TAINOCERATIDAE) (FOSSIL)
- gigantus, Modiolus gigantus Li & al., 1982 † - (MYTILIDAE) (FOSSIL)
- gigantus, Neoaganides gigantus Liang, 1983 † - (PSEUDOHALORITIDAE) (FOSSIL)
- gigartoides, Amalda gigartoides (Olson, 1956 †) - (ANCILLARIIDAE) (FOSSIL)
- gigas, Pleuroceras gigas Howarth, 1958 † - (AMALTHEIDAE) (FOSSIL)
- gigas, Ampullaria gigas J.B. von Spix in J.A. Wagner, 1827 - syn of: Pomacea maculata (G. Perry, 1810) - (AMPULLARIIDAE)
- gigas, Proaustraliceras gigas (J. de C. Sowerby, 1828 †) - (ANCYLOCERATIDAE) (FOSSIL)
- gigas, Aplysia gigas P.C.A.S.L. Rang, 1828 - syn of: Dolabella auricularia gigas (P.C.A.S.L. Rang, 1828) - (APLYSIIDAE)
- gigas, Dolabella auricularia gigas (P.C.A.S.L. Rang, 1828) - (APLYSIIDAE)
- gigas, Arctoceras gigas Tozer, 1994 † - syn of: Arctoceras tuberculatum (Smith, 1932 †) - (ARCTOCERATIDAE) (FOSSIL)
- gigas, Wiegmannia gigas W.E. Collinge, 1901 - (ARIOPHANTIDAE)
- gigas, Austenia gigas (W.H. Benson, 1836) - (ARIOPHANTIDAE)
- gigas, Gravesia gigas (Zieten, 1830 †) - (AULACOSTEPHANIDAE) (FOSSIL)
- gigas, Koninckites gigas (L. Waagen, 1895 †) - (BEYRICHITIDAE) (FOSSIL)
- gigas, Engina gigas B.M. Landau & G.J. Vermeij, 2012 † - (BUCCINIDAE) (FOSSIL)
- gigas, Campanile gigas (K. Martin, 1881 †) - (CAMPANILIDAE) (FOSSIL)
- gigas, Nemocardium gigas (J.L.M. Defrance, 1817 †) - (CARDIIDAE) (FOSSIL)
- gigas, Dinoplax gigas (J.F. Gmelin, 1791) - (CHAETOPLEURIDAE)
- gigas, Chama gigas C. Linnaeus, 1758 - syn of: Tridacna gigas (C. Linnaeus, 1758) - (CHAMIDAE)
- gigas, Chiton gigas J.F. Gmelin, 1791 - syn of: Dinoplax gigas (J.F. Gmelin, 1791) - (CHITONIDAE)
- gigas, Formosana gigas (O.F. von Möllendorff, 1885) - (CLAUSILIIDAE)
- gigas, Grandinenia takagii gigas H. Nordsieck, 2007 - (CLAUSILIIDAE)
- gigas, Cochlostoma gigas S. Gofas & T. Backeljau, 1994 - (COCHLOSTOMATIDAE)
- gigas, Conus gigas G. Fischer von Waldheim, 1807 - syn of: Kalloconus pulcher (J. Lightfoot, 1786) - (CONIDAE)
- gigas, Crioceratites gigas Ackermann, 1932 † - syn of: Emericiceras gigas (Ackermann, 1932 †) - (CRIOCERATITIDAE) (FOSSIL)
- gigas, Cylindrobulla gigas P.S. Mikkelsen, 1998 - (CYLINDROBULLIDAE)
- gigas, Zoila gigas (F. McCoy, 1867 †) - (CYPRAEIDAE) (FOSSIL)
- gigas, Kentrodoris gigas L.S.R. Bergh, 1876 - syn of: Jorunna funebris (E.F. Kelaart, 1859) - (DISCODORIDIDAE)
- gigas, Aphelodoris gigas N.G. Wilson, 2003 - (DORIDIDAE)
- gigas, Pseudochloritis gigas (Pfeffer, 1930) † - (ELONIDAE) (FOSSIL)
- gigas, Emericiceras gigas (Ackermann, 1932 †) - (EMERICICERATIDAE) (FOSSIL)
- gigas, Risselloidea gigas Pan, 1977 † - (EUCYCLIDAE) (FOSSIL)
- gigas, Mucronalia gigas J.T. Kuroda & T. Habe, 1950 - syn of: Melanella teinostoma gigas (J.T. Kuroda & T. Habe, 1950) - (EULIMIDAE)
- gigas, Melanella teinostoma gigas (J.T. Kuroda & T. Habe, 1950) - (EULIMIDAE)
- gigas, Facelina gigas A. da Costa, 1866, 1863 - syn of: Facelina quatrefagesi A.J.B.M. Vayssière, 1888 - (FACELINIDAE)
- gigas, Pleuroploca gigas J.F. Gmelin, 1791 - syn of: Triplofusus giganteus (L.C. Kiener, 1840) - (FASCIOLARIIDAE)
- gigas, Lucapinella gigas G.W. Nowell-Usticke, 1959 - (FISSURELLIDAE)
- gigas, Scelidotoma gigas (E.C. Von Martens, 1881) - (FISSURELLIDAE)
- gigas, Tugali gigas E.C. Von Martens, 1881 - syn of: Scelidotoma gigas (E.C. Von Martens, 1881) - (FISSURELLIDAE)
- gigas, Ephippodonta gigas H. Kubo, 1996 - (GALEOMMATIDAE)
- gigas, Domatoceras gigas Tzvetaev, 1898 † - (GRYPOCERATIDAE) (FOSSIL)
- gigas, Haliotis gigas P.F. Röding, 1798 - syn of: Haliotis gigantea J.F. Gmelin, 1791 - (HALIOTIDAE)
- gigas, Panopea gigas J. Lightfoot, 1786 - syn of: Panopea glycimeris (I. von Born, 1778) - (HIATELLIDAE)
- gigas, Himantoceras gigas Thieuloy & Bulot, 1993 † - (HIMANTOCERATIDAE) (FOSSIL)
- gigas, Criohimantoceras gigas Thieuloy & Bulot, 1993 † - syn of: Himantoceras gigas Thieuloy & Bulot, 1993 † - (HIMANTOCERATIDAE) (FOSSIL)
- gigas, Hippopodium gigas Tate † - (HIPPOPODIUMIDAE) (FOSSIL)
- gigas, Whitfieldiella gigas (Chubb, 1967 †) - (HIPPURITIDAE) (FOSSIL)
- gigas, Barretia gigas Chubb, 1967 † - syn of: Whitfieldiella gigas (Chubb, 1967 †) - (HIPPURITIDAE) (FOSSIL)
- gigas, Discula gigas T.V. Wollaston, 1878 - syn of: Discula lyelliana R.T. Lowe, 1852 - (HYGROMIIDAE)
- gigas, Leptotheuthis gigas Meyer, 1834 † - (LEPTOTHEUTHIDAE) (FOSSIL)
- gigas, Peripetoceras gigas Prinoth & Posenato, 2007 † - (LIROCERATIDAE) (FOSSIL)
- gigas, Worthenia gigas E.F.R.K. Koken, 1898 † - syn of: Wortheniella gigas (E.F.R.K. Koken, 1898 †) - (LOPHOSPIRIDAE) (FOSSIL)
- gigas, Mactra gigas G.W. Nowell-Usticke, 1969 - (MACTRIDAE)
- gigas, Obesotoma gigas (T.A. Verkrüzen, 1875) - (MANGELIIDAE)
- gigas, Marginellona gigas (E.C. Von Martens, 1904) - (MARGINELLIDAE)
- gigas, Pachydomus gigas J.B.M. Dana, 1847 † - syn of: Cleobis grandis J.B.M. Dana, 1847 † - (MEGADESMIDAE) (FOSSIL)
- gigas, Melongena gigas C. Beets, 1941 † - (MELONGENIDAE) (FOSSIL)
- gigas, Pseudoschistoceras gigas (Smith, 1927 †) - (METALEGOCERATIDAE) (FOSSIL)
- gigas, Mya gigas J. Lightfoot, 1786 - syn of: Panopea glycimeris (I. von Born, 1778) - (MYIDAE)
- gigas, Neripteron gigas R.P. Lesson - syn of: Neritina granosa G.B. I Sowerby, 1825 - (NERITIDAE)
- gigas, Notaeolidia gigas C.N.E. Eliot, 1905 - (NOTAEOLIDIIDAE)
- gigas, Dosidicus gigas (A.V.M.D. D'Orbigny, 1835) - (OMMASTREPHIDAE)
- gigas, Crassostrea gigas (C.P. Thunberg, 1793) - (OSTREIDAE)
- gigas, Oopecten gigas (von Schlotheim 1813) † - (PECTINIDAE) (FOSSIL)
- gigas, Oopecten gigas Schlotheim, 1813 † - (PECTINIDAE) (FOSSIL)
- gigas, Siliqua gigas R.P. Lesson, 1830 - (PHARIDAE)
- gigas, Phragmoceras gigas Hedstrom, 1917 † - (PHRAGMOCERATIDAE) (FOSSIL)
- gigas, Pinna gigas P.F. Röding, 1798 - syn of: Pinna nobilis C. Linnaeus, 1758 - (PINNIDAE)
- gigas, Pleurobranchus gigas Sawaya & Grempel, 1972 - (PLEUROBRANCHIDAE)
- gigas, Telescopium gigas K. Martin, 1881 † - syn of: Campanile gigas (K. Martin, 1881 †) - (POTAMIDIDAE) (FOSSIL)
- gigas, Purpuroidea gigas (Etallon, 1861 †) - (PURPUROIDEIDAE) (FOSSIL)
- gigas, Onoba gigas L. Bozzetti, 2008 - (RISSOIDAE)
- gigas, Semisulcospira gigas H.A. Pilsbry & Y. Hirase, 1904 - syn of: Semisulcospira libertina gigas H.A. Pilsbry & Y. Hirase, 1904 - (SEMISULCOSPIRIDAE)
- gigas, Semisulcospira libertina gigas H.A. Pilsbry & Y. Hirase, 1904 - (SEMISULCOSPIRIDAE)
- gigas, Tenagodus gigas R.P. Lesson, 1830 - (SILIQUARIIDAE)
- gigas, Siphonaria gigas G.B. I Sowerby, 1825 - (SIPHONARIIDAE)
- gigas, Acharax gigas (S. Kanno, 1960 †) - (SOLEMYIDAE) (FOSSIL)
- gigas, Lobatus gigas (C. Linnaeus, 1758) - (STROMBIDAE)
- gigas, Strombus gigas C. Linnaeus, 1758 - syn of: Lobatus gigas (C. Linnaeus, 1758) - (STROMBIDAE)
- gigas, Struthiolaria papulosa gigas G.B. II Sowerby, 1842 - (STRUTHIOLARIIDAE)
- gigas, Ochroderma gigas E.C. Von Martens - (SUBULINIDAE)
- gigas, Subulites gigas d'Eichwald, 1842 † - (SUBULITIDAE) (FOSSIL)
- gigas, Tridacna gigas (C. Linnaeus, 1758) - (TRIDACNIDAE)
- gigas, Inella gigas (R.B. Hinds, 1843) - (TRIPHORIDAE)
- gigas, Turbo gigas Imlay, 1940 † - (TURBINIDAE) (FOSSIL)
- gigas, Pleurotoma gigas T.A. Verkrüzen, 1875 - syn of: Obesotoma gigas (T.A. Verkrüzen, 1875) - (TURRIDAE)
- gigas, Coelocentrum gigas E.C. Von Martens, 1897 - (UROCOPTIDAE)
- gigas, Myonia gigas J.B.M. Dana, 1847 † - syn of: Cleobis grandis J.B.M. Dana, 1847 † - (VACUNELLIDAE) (FOSSIL)
- gigas, Pelecyora gigas (J.B.P.A. Lamarck, 1818 †) - (VENERIDAE) (FOSSIL)
- gigas, Vermetus gigas Ant. Bivona-Bernardi, 1832 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas, Serpulorbis gigas Ant. Bivona-Bernardi in R.A. Philippi, 1836 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas, Archivesica gigas (W.H. Dall, 1896) - (VESICOMYIDAE)
- gigas, Calyptogena gigas W.H. Dall, 1896 - syn of: Archivesica gigas (W.H. Dall, 1896) - (VESICOMYIDAE)
- gigas, Vesicomya gigas W.H. Dall, 1896 - syn of: Archivesica gigas (W.H. Dall, 1896) - (VESICOMYIDAE)
- gigas, Wortheniella gigas (E.F.R.K. Koken, 1898 †) - (WORTHENIELLIDAE) (FOSSIL)
- gigas alfredensis, Dinoplax gigas alfredensis P. Bartsch - (CHAETOPLEURIDAE)
- gigas anguimanum, Proaustraliceras gigas anguimanum R. Casey, 1961 † - (ANCYLOCERATIDAE) (FOSSIL)
- gigas angulata, Ostrea gigas angulata J.B.P.A. Lamarck, 1819 - syn of: Crassostrea angulata (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- gigas angulatus, Vermetus gigas angulatus T.A. de M. Monterosato, 1880 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas arcuatum, Proaustraliceras gigas arcuatum (T.L. Casey, 1961 †) - (ANCYLOCERATIDAE) (FOSSIL)
- gigas conglobata, Vermetus gigas conglobata T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas conglobatus, Vermetus gigas conglobatus T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas destituta, Vermetus gigas destituta T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas destitutus, Vermetus gigas destitutus T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas inscriptum, Proaustraliceras gigas inscriptum R. Casey, 1961 † - (ANCYLOCERATIDAE) (FOSSIL)
- gigas kumamoto, Crassostrea gigas kumamoto Amemiya, 1928 - syn of: Crassostrea sikamea (Amemiya, 1928) - (OSTREIDAE)
- gigas minor, Vermetus gigas minor P.M. Pallary, 1912 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas pahayokee, Strombus gigas pahayokee E.J. Petuch, 1994 - syn of: Lobatus gigas (C. Linnaeus, 1758) - (STROMBIDAE)
- gigas rufa, Vermetus gigas rufa T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas sikamea, Crassostrea gigas sikamea Amemiya, 1928 - syn of: Crassostrea sikamea (Amemiya, 1928) - (OSTREIDAE)
- gigas typica, Vermetus gigas typica T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- gigas validifossus, Dinoplax gigas validifossus E.A. Ashby, 1934 - syn of: Dinoplax validifossus E.A. Ashby, 1934 - (CHAETOPLEURIDAE)
- gigas verrilli, Lobatus gigas verrilli (J.T.L. McGinty, 1955) - (STROMBIDAE)
- gigasulcata, Asprella gigasulcata (R.G. Moolenbeek, D. Röckel & P. Bouchet, 2008) - (CONIDAE)
- gigaxi, Helicella gigaxi L. Pfeiffer - (HYGROMIIDAE)
- gigaxii, Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- gigliolii, Philinopsis gigliolii (C.M. Tapparone-Canefri, 1874) - (AGLAJIDAE)
- gigliolii, Fusinus gigliolii T.A. de M. Monterosato, 1890 - syn of: Fusinus rostratus (A.G. Olivi, 1792) - (FASCIOLARIIDAE)
- gigliottii, Metula gigliottii J. Coltro, 2005 - (BUCCINIDAE)
- gignouxi, Nigericeras gignouxi Schneegans, 1943 † - syn of: Nigericeras gadeni (Chudeau, 1909 †) - (ACANTHOCERATIDAE) (FOSSIL)
- gignouxi, Brancoceras gignouxi M. Collignon, 1949 † - (BRANCOCERATIDAE) (FOSSIL)
- gignouxi, Davouxiceras gignouxi (Sarkar, 1955 †) - (EMERICICERATIDAE) (FOSSIL)
- gignouxi, Forbesiceras gignouxi (M. Collignon, 1929 †) - (FORBESICERATIDAE) (FOSSIL)
- gignouxi, Phyllopachyceras gignouxi M. Collignon, 1937 † - (PHYLLOCERATIDAE) (FOSSIL)
- gijigensis, Praeundulomya gijigensis Maslennikow, 1959 † - (SANGUINOLITIDAE) (FOSSIL)
- gijon, Prunum gijon J. Espinosa & J.A. Ortea, 2006 - (MARGINELLIDAE)
- gijskronenbergi, Persististrombus gijskronenbergi M. Harzhauser, 2007 † - (STROMBIDAE) (FOSSIL)
- gilae, Tryonia gilae D.W. Taylor, 1987 - (COCHLIOPIDAE)
- gilae, Pyrgulopsis gilae (D.W. Taylor, 1987) - (HYDROBIIDAE)
- gilae, Fontelicella gilae D.W. Taylor, 1987 - syn of: Pyrgulopsis gilae (D.W. Taylor, 1987) - (HYDROBIIDAE)
- gilanensis, Likharevia gilanensis H. Nordsieck, 1995 - (CLAUSILIIDAE)
- gilanensis, Caspiophaedusa perlucens gilanensis H. Nordsieck, 1978 - (CLAUSILIIDAE)
- gilanensis costulata, Likharevia gilanensis costulata H. Nordsieck, 1995 - (CLAUSILIIDAE)
- gilberthae, Limicolaria gilberthae G. Revoil, 1882 - (ACHATINIDAE)
- Gilbertharrisella, Genus Gilbertharrisella Hodson, 1927 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- gilbertharrisi, Muricopsis gilbertharrisi (N.E. Weisbord, 1962) - (MURICIDAE)
- gilbertharrisi, Ostrea gilbertharrisi C.J. Maury, 1917 † - (OSTREIDAE) (FOSSIL)
- gilbertharrisi, Argopecten gilbertharrisi F. Hodson & F. Hodson, 1927 † - (PECTINIDAE) (FOSSIL)
- gilbertharrisi, Turritella gilbertharrisi F. Hodson, 1926 † - (TURRITELLIDAE) (FOSSIL)
- gilbertharrisi democracianus, Argopecten gilbertharrisi democracianus F. Hodson & F. Hodson, 1927 - (PECTINIDAE)
- gilberti, Conlinoceras gilberti Cobban & Scott, 1972 † - (ACANTHOCERATIDAE) (FOSSIL)
- gilberti, Acteon gilberti A.E.M. Cossmann, 1889 † - (ACTEONIDAE) (FOSSIL)
- gilberti, Baculites gilberti Cobban, 1962 † - (BACULITIDAE) (FOSSIL)
- gilberti, Badistes gilberti (L. Pfeiffer, 1846) - (CAMAENIDAE)
- gilberti, Ceratites gilberti Smith, 1914 † - syn of: Frechites occidentalis (Smith, 1914 †) - (CERATITIDAE) (FOSSIL)
- gilberti, Lienardia gilberti S.M. Souverbie, 1874 - syn of: Lienardia giliberti (S.M. Souverbie, 1874) - (CLATHURELLIDAE)
- gilberti, Colubraria gilberti D. Monsecour & H. Dekker, 2014 - (COLUBRARIIDAE)
- gilberti, Nitidoconus gilberti (L. Bozzetti, 2012) - (CONIDAE)
- gilberti, Allerisma gilberti White, 1883 † - syn of: Alula gilberti (White, 1883 †) - (EDMONDIIDAE) (FOSSIL)
- gilberti, Cordiceramus gilberti (White, 1876 †) - (INOCERAMIDAE) (FOSSIL)
- gilberti, Crassula gilberti (J.A. Bartrum, 1919 †) - (MACTRIDAE) (FOSSIL)
- gilberti, Cypraedia gilberti (K.V.W. Palmer, 1937 †) - (OVULIDAE) (FOSSIL)
- gilberti, Tubiferoceras gilberti (Kindle & M. Breger, 1904 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- gilberti, Gyraulus gilberti (R.W. Dunker, 1848) - (PLANORBIDAE)
- gilberti, Kashmirites gilberti Mathews, 1929 † - syn of: Wasatchites perrini Mathews, 1929 † - (PRIONITIDAE) (FOSSIL)
- gilberti, Decorospira gilberti Blodgett & Johnson, 1992 † - (PSEUDOPHORIDAE) (FOSSIL)
- gilberti, Pseudoptychoceras gilberti Etayo-Serna, 1979 † - (PTYCHOCERATIDAE) (FOSSIL)
- gilberti, Alula gilberti (White, 1883 †) - (SANGUINOLITIDAE) (FOSSIL)
- gilberti, Hoploscaphites gilberti Landman & al., 2013 † - (SCAPHITIDAE) (FOSSIL)
- gilberti, Tritonia gilberti F.M. MacFarland, 1966 - syn of: Tochuina tetraquetra diomedea (L.S.R. Bergh, 1894) - (TRITONIIDAE)
- gilberti, Jujubinus gilberti (R.P. Montrouzier in P. Fischer, 1878) - (TROCHIDAE)
- gilbertianus, Octopus gilbertianus S.S. Berry, 1912 - syn of: Enteroctopus dofleini (G. Wülker, 1910) - (OCTOPODIDAE)
- Gilbertina, Genus Gilbertina L.J. Morlet, 1888 (RINGICULIDAE)
- gilbertoi, Trivellona gilbertoi D. Fehse, 2015 - (TRIVIIDAE)
- gilbertsoni, Mitra gilbertsoni (J.M. Cate, 1968) - (MITRIDAE)
- gilbertsoni, Murchisonia gilbertsoni de Koninck, 1883 † - syn of: Donaldospira pertusa (de Koninck, 1883 †) - (MURCHISONIIDAE) (FOSSIL)
- gilbertsoni, Donaldospira gilbertsoni J. Donald, 1895 † - syn of: Murchisonia angulata marginata Lotz, 1900 † - (ORTHONEMIDAE) (FOSSIL)
- Gilbertsonia, Genus Gilbertsonia Morris, Dickins & Astafieva-Urbaitis, 1991 † (PHOLADOMYOIDEA (UNASSIGNED)) (FOSSIL)
- Gilbertturricula, Genus Gilbertturricula Cadée & Janssen, 1985 † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- gilbertus, Rhinus gilbertus L.R.L. Simone & R. Casati, 2013 - (SIMPULOPSIDAE)
- gilbertvossi, Pectinodonta gilbertvossi A.A. Olsson, 1971 - (PECTINODONTIDAE)
- Gilbertwhitea, Genus Gilbertwhitea Crickmay, 1930 † (PARALLELODONTIDAE) (FOSSIL)
- gilchristae, Ethalia gilchristae D.G. Herbert, 1992 - (TROCHIDAE)
- gilchristi, Armina gilchristi K.M. White, 1955 - (ARMINIDAE)
- gilchristi, Microcardium gilchristi (G.B. III Sowerby, 1904) - (CARDIIDAE)
- gilchristi, Cetoconcha gilchristi (G.B. III Sowerby, 1904) - (CETOCONCHIDAE)
- gilchristi, Stauroteuthis gilchristi (C.W. Robson, 1924) - (CIRROTEUTHIDAE)
- gilchristi, Chunioteuthis gilchristi C.W. Robson, 1924 - syn of: Stauroteuthis gilchristi (C.W. Robson, 1924) - (CIRROTEUTHIDAE)
- gilchristi, Conus gilchristi G.B. III Sowerby, 1903 - syn of: Nataliconus natalis (G.B. II Sowerby, 1858) - (CONIDAE)
- gilchristi, Crassatella gilchristi G.B. III Sowerby, 1904 - (CRASSATELLIDAE)
- gilchristi, Cardiomya gilchristi (G.B. III Sowerby, 1904) - (CUSPIDARIIDAE)
- gilchristi, Abraliopsis gilchristi (G.C. Robson, 1924) - (ENOPLOTEUTHIDAE)
- gilchristi, Pseudamussium gilchristi (Sowerby III, 1904) - (PECTINIDAE)
- gilchristi, Pleurobranchella gilchristi O'Donoghue, 1929 - syn of: Pleurobranchella nicobarica K.H.J. Thiele, 1925 - (PLEUROBRANCHAEIDAE)
- gilchristi, Solariella gilchristi K.H. Barnard, 1963 - syn of: Solariella intermissa K.H.J. Thiele, 1925 - (SOLARIELLIDAE)
- gilchristi, Tellina gilchristi G.B. III Sowerby, 1904 - (TELLINIDAE)
- gilchristi, Astralium gilchristi G.B. III Sowerby, 1903 - syn of: Bolma bathyraphis (E.A. Smith, 1899) - (TURBINIDAE)
- gilchristi, Bolma gilchristi G.B. III Sowerby, 1903 - syn of: Bolma bathyraphis (E.A. Smith, 1899) - (TURBINIDAE)
- gilchristi, Gemmula gilchristi (G.B. III Sowerby, 1902) - (TURRIDAE)
- gilchristi, Turris gilchristi A. Dey, 1961 † - (TURRIDAE) (FOSSIL)
- gilchristi, Neptuneopsis gilchristi G.B. III Sowerby, 1898 - (VOLUTIDAE)
- gilchristi, Athleta gilchristi (G.B. III Sowerby, 1902) - (VOLUTIDAE)
- gilchristi mozambicana, Athleta gilchristi mozambicana (H.A. Rehder, 1972) - syn of: Athleta mozambicana (H.A. Rehder, 1972) - (VOLUTIDAE)
- gilderoyi, Naesiotus gilderoyi J.J. Van Mol, 1972 - syn of: Naesiotus cavagnaroi A.G. Smith, 1972 - (BULIMULIDAE)
- gilesae, Kiotoceras gilesae Flower, 1976 † - (ENDOCERATIDAE) (FOSSIL)
- gilesi, Paludinella gilesi G.F. Angas, 1877 - syn of: Coxiella gilesi (G.F. Angas, 1877) - (ASSIMINEIDAE)
- gilesi, Coxiella gilesi (G.F. Angas, 1877) - (POMATIOPSIDAE)
- gilesorum, Magdalemitra gilesorum R.N. Kilburn, 1974 - (VOLUTOMITRIDAE)
- gilgitensis, Auroradiolites gilgitensis (J.H.F. Douvillé, 1926 †) - (RADIOLITIDAE) (FOSSIL)
- gilgitensis, Praeradiolites gilgitensis J.H.F. Douvillé, 1926 † - syn of: Auroradiolites gilgitensis (J.H.F. Douvillé, 1926 †) - (RADIOLITIDAE) (FOSSIL)
- gili, Pazinotus gili P.M.S. Costa & A. Pimenta, 2012 - (MURICIDAE)
- gili, Latiaxis gili S. Kosuge, 1990 - syn of: Babelomurex tectumsinensis (G.P. Deshayes, 1856) - (MURICIDAE)
- giliberti, Lienardia giliberti (S.M. Souverbie, 1874) - (CLATHURELLIDAE)
- giliberti, Pleurotoma giliberti S.M. Souverbie, 1874 - syn of: Lienardia giliberti (S.M. Souverbie, 1874) - (TURRIDAE)
- gilii, Nassarius gilii B.M. Landau & al., 2013 † - (NASSARIIDAE) (FOSSIL)
- gillei, Conus gillei F.P. Jousseaume, 1884 - syn of: Cylinder dalli (R.E.C. Stearns, 1873) - (CONIDAE)
- gillei, Mauritia gillei F.P. Jousseaume, 1893 - syn of: Mauritia maculifera F.A. Schilder, 1932 - (CYPRAEIDAE)
- gilleni, Granulomelon gilleni G.A. Solem, 1993 - (CAMAENIDAE)
- gillensis, Sinumelon gillensis G.A. Solem, 1993 - (CAMAENIDAE)
- gilletae, Melanoides gilletae R. Rey, 1974 † - (THIARIDAE) (FOSSIL)
- gilleti, Scambula gilleti Chavan 1939 † - (CRASSATELLIDAE) (FOSSIL)
- gilletteorum, Panamurex gilletteorum E.H. Vokes, 1963 † - syn of: Viator sexangulus (W.H. Dall, 1915 †) - (MURICIDAE) (FOSSIL)
- gilletti, Turritella gilletti T.A. Garrard, 1974 - syn of: Turritella alba H. Adams, 1872 - (TURRITELLIDAE)
- gilletti, Kurosioia gilletti T.A. Garrard, 1974 - syn of: Turritella alba H. Adams, 1872 - (TURRITELLIDAE)
- gilli, Fusus gilli C.J. Maury, 1910 † - syn of: Vokesimurex gilli (C.J. Maury, 1910 †) - (FASCIOLARIIDAE) (FOSSIL)
- gilli, Sphenoceramus gilli Walaszczyk & Cobban, 2006 † - (INOCERAMIDAE) (FOSSIL)
- gilli, Latiaxis gilli S. Kosuge, 1990 - (MURICIDAE)
- gilli, Vokesimurex gilli (C.J. Maury, 1910 †) - (MURICIDAE) (FOSSIL)
- gilli, Turbonilla gilli W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- gilli, Hoploscaphites gilli Cobban & Jeletzky, 1965 † - (SCAPHITIDAE) (FOSSIL)
- gilli, Tylospira gilli J. Marwick, 1960 - (STRUTHIOLARIIDAE)
- gilli delmontensis, Turbonilla gilli delmontensis W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- gilli polynematicus, Murex gilli polynematicus J. Brown & H.A. Pilsbry, 1911 † - syn of: Vokesimurex polynematicus (J. Brown & H.A. Pilsbry, 1911 †) - (MURICIDAE) (FOSSIL)
- Gillia, Subgenus Lepyrium (Gillia) W. Stimpson, 1865 (LITHOGLYPHIDAE)
- gilliamense, Stacheoceras gilliamense Böse, 1919 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- gilliana, Porcellia gilliana White & St. John 1867 † - (PORCELLIIDAE) (FOSSIL)
- gilliana, Ambozone gilliana White & St. John, 1867 † - syn of: Porcellia gilliana White & St. John 1867 † - (TURBINIDAE) (FOSSIL)
- gilliesi, Powelliphanta gilliesi (E.A. Smith, 1880) - (RHYTIDIDAE)
- gilliesi, Paryphanta gilliesi E.A. Smith, 1880 - syn of: Powelliphanta gilliesi (E.A. Smith, 1880) - (RHYTIDIDAE)
- gilliesi aurea, Powelliphanta gilliesi aurea (A.W.B. Powell, 1946) - (RHYTIDIDAE)
- gilliesi aurea, Paryphanta gilliesi aurea A.W.B. Powell, 1946 - syn of: Powelliphanta gilliesi aurea (A.W.B. Powell, 1946) - (RHYTIDIDAE)
- gilliesi brunnea, Powelliphanta gilliesi brunnea (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi brunnea, Paryphanta gilliesi brunnea A.W.B. Powell, 1936 - syn of: Powelliphanta gilliesi brunnea (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi compta, Powelliphanta gilliesi compta (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilliesi compta, Paryphanta gilliesi compta A.W.B. Powell, 1930 - syn of: Powelliphanta gilliesi compta (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilliesi fallax, Powelliphanta gilliesi fallax (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilliesi fallax, Paryphanta gilliesi fallax A.W.B. Powell, 1930 - syn of: Powelliphanta gilliesi fallax (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilliesi jamesoni, Powelliphanta gilliesi jamesoni (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi jamesoni, Paryphanta gilliesi jamesoni A.W.B. Powell, 1936 - syn of: Powelliphanta gilliesi jamesoni (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi kahurangica, Powelliphanta gilliesi kahurangica (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi kahurangica, Paryphanta gilliesi kahurangica A.W.B. Powell, 1936 - syn of: Powelliphanta gilliesi kahurangica (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi montana, Powelliphanta gilliesi montana (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi montana, Paryphanta gilliesi montana A.W.B. Powell, 1936 - syn of: Powelliphanta gilliesi montana (A.W.B. Powell, 1936) - (RHYTIDIDAE)
- gilliesi subfusca, Powelliphanta gilliesi subfusca (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilliesi subfusca, Paryphanta gilliesi subfusca A.W.B. Powell, 1930 - syn of: Powelliphanta gilliesi subfusca (A.W.B. Powell, 1930) - (RHYTIDIDAE)
- gilmorei, Busycon carica gilmorei E.J. Petuch, 1994 - (BUSYCONIDAE)
- gilmorei, Urosalpinx gilmorei E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- gilmulli, Medfrazyga gilmulli Rohr & al., 2008 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- gilpini, Oenopota gilpini (T.A. Verkrüzen, 1878) - (MANGELIIDAE)
- gilrowei, Prochaetoderma gilrowei D. Ivanov & A.H. Scheltema, 2008 - (PROCHAETODERMATIDAE)
- gilsoni, Odostomia gilsoni P. Dautzenberg, 1912 - syn of: Megastomia conoidea (G.B. Brocchi, 1814) - (PYRAMIDELLIDAE)
- gilva, Hallaxa gilva M.C. Miller, 1987 - (ACTINOCYCLIDAE)
- gilva, Helicostyla gilva L. Pfeiffer, 1845 - (BRADYBAENIDAE)
- gilva, Hemitrochus gilva (A.E.J. Férussac, 1821) - (CEPOLIDAE)
- gilva, Anachis gilva (K.T. Menke, 1847) - (COLUMBELLIDAE)
- gilva, Erronea gilva G.R. Sulliotti, 1924 - syn of: Erronea pallida (J.E. Gray, 1824) - (CYPRAEIDAE)
- gilva, Marginella gilva J. Goud & J. Neefs, 1996 - (MARGINELLIDAE)
- gilva, Natica gilva R.A. Philippi, 1851 - syn of: Laguncula pulchella W.H. Benson, 1842 - (NATICIDAE)
- gilva, Lunatia gilva R.A. Philippi, 1851 - syn of: Laguncula pulchella W.H. Benson, 1842 - (NATICIDAE)
- gilva, Haurakia gilva (W.H. Turton, 1932) - (RISSOIDAE)
- gilvella, Luria gilvella F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- gilvosplendens, Solariella gilvosplendens J.C. Melvill, 1891 - (SOLARIELLIDAE)
- Gilvostia, syn of: Genus Alcithoe H. Adams & A. Adams, 1853 (VOLUTIDAE)
- gilvum, Trapezium gilvum (E.C. Von Martens, 1872) - (TRAPEZIDAE)
- gilvum, Placamen gilvum (R.A. Philippi, 1849) - (VENERIDAE)
- gilvum sowerbyii, Trapezium gilvum sowerbyii J.G. Hidalgo, 1903 - (TRAPEZIDAE)
- gilvus, Arion gilvus A. Torres Mínguez, 1925 - (ARIONIDAE)
- gilvus, Phasmoconus gilvus (L.A. Reeve, 1849) - (CONIDAE)
- gilvus, Spondylus gilvus L.A. Reeve, 1856 - (SPONDYLIDAE)
- gimbiense, Chondropomium gimbiense P. Bartsch, 1946 - (POMATIIDAE)
- gimbiense saltrouense, Chondropomium gimbiense saltrouense P. Bartsch, 1946 - (POMATIIDAE)
- ginae, Volvarina ginae J. Espinosa & J.A. Ortea, 2003 - (MARGINELLIDAE)
- ginae, Trivirostra ginae D. Fehse & J. Grego, 2002 - (TRIVIIDAE)
- Ginaia, Genus Ginaia Š. Brusina, 1896 (HYDROBIIDAE)
- ginanni, Chemnitzia ginanni Stoppani, 1858 † - syn of: Toxoconcha brocchi Stoppani, 1857 † - (PYRAMIDELLIDAE) (FOSSIL)
- gindaliensis, Ampullina gindaliensis Abbass, 1967 † - (AMPULLINIDAE) (FOSSIL)
- Ginebis, Genus Ginebis Is. Taki & Y. Otuka, 1942 (CALLIOTROPIDAE)
- Ginella, Genus Ginella Rozanov & al., 1969 † (HELCIONELLIDAE) (FOSSIL)
- gineria, Xeroleuca gineria E. Vidal & A. López, 1950 - (HYGROMIIDAE)
- gingensis, Ostrea gingensis Schlotheim, 1813 † - (OSTREIDAE) (FOSSIL)
- Gingicithara, Genus Gingicithara R.N. Kilburn, 1992 (MANGELIIDAE)
- gingivata, Galba gingivata C.J. Goupil, 1835 - syn of: Galba truncatula (O.F. Müller, 1774) - (LYMNAEIDAE)
- gini, Ainicardita gini A.M. Popov, 1983 † - (CARDITIDAE) (FOSSIL)
- ginnania, Bela ginnania (A. Risso, 1826) - (MANGELIIDAE)
- ginnania, Bela ginnania E. Forbes, 1844 - syn of: Bela ginnania formica F. Nordsieck, 1977 - (MANGELIIDAE)
- Ginnania, syn of: Genus Bela J.E. Gray, 1847 (MANGELIIDAE)
- ginnania formica, Bela ginnania formica F. Nordsieck, 1977 - (MANGELIIDAE)
- ginnania intermedia, Bela ginnania intermedia T.A. de M. Monterosato, 1878 - syn of: Bela ginnania (A. Risso, 1826) - (MANGELIIDAE)
- ginnania rufula, Bela ginnania rufula É.A.A. Locard & E. Caziot, 1900 - syn of: Bela ginnania (A. Risso, 1826) - (MANGELIIDAE)
- ginnaniana pallida, Bela ginnaniana pallida É.A.A. Locard & E. Caziot, 1900 - syn of: Bela ginnania (A. Risso, 1826) - (MANGELIIDAE)
- Ginniana, syn of: Genus Bela J.E. Gray, 1847 (MANGELIIDAE)
- ginoi, Pustularia bistrinotata ginoi F.Jr. Lorenz, 2014 - (CYPRAEIDAE)
- ginolensis, Bythinella ginolensis P. Fagot, 1881 - (BYTHINELLIDAE)
- ginsburgi, Gymnotoceras ginsburgi Bucher, 1992 † - (BEYRICHITIDAE) (FOSSIL)
- Ginsburgites, Genus Ginsburgites Bucher , 1992 † (BALATONITIDAE) (FOSSIL)
- ginterensis, Inoceramus ginterensis Pergament, 1966 † - (INOCERAMIDAE) (FOSSIL)
- gioeni, Scaphander gioeni L. Philipsson, 1788 - syn of: Scaphander lignarius (C. Linnaeus, 1758) - (SCAPHANDRIDAE)
- Gioenia, syn of: Genus Cavolinia P.C. Abildgaard, 1791 (CAVOLINIIDAE)
- gionensis, Entodina gionensis F. Lange de Morretes, 1940 - (SCOLODONTIDAE)
- giordanii, Peltolytoceras giordanii Bonarelli, 1900 † - (LYTOCERATIDAE) (FOSSIL)
- giorgioi, Terebra giorgioi U. Aubry, 1999 - (TEREBRIDAE)
- giorossii, Phasmoconus giorossii (L. Bozzetti, 2005) - (CONIDAE)
- gioushiensis, Ampullonatica gioushiensis Abbass, 1967 † - (AMPULLINIDAE) (FOSSIL)
- giovannellae, Brachylimax giovannellae G. Falkner & H.J. Niederhöfer, 2008 - (LIMACIDAE)
- giovannii, Dentimargo giovannii G. Pérez-Dionis, J. Espinosa & J.A. Ortea, 2014 - (MARGINELLIDAE)
- giovanolii, Joculator giovanolii A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- Giovaraites, Genus Giovaraites Frau & al., 2016 † (HETEROCERATIDAE) (FOSSIL)
- giovia, Seguenzia giovia W.H. Dall, 1919 - (SEGUENZIIDAE)
- giovinei, Hoplitocrioceras giovinei Aguirre-Urreta & Rawson, 2001 † - (NEOCOMITIDAE) (FOSSIL)
- gippslandicus, Fusus gippslandicus R. Tate, 1888 † - (FASCIOLARIIDAE) (FOSSIL)
- gippslandicus, Austropyrgus gippslandicus W.F. Ponder, D.J. Colgan, A. Clark, W.B. Miller & T. Terzis, 1994 - (HYDROBIIDAE)
- giralanensis, Bithynia giralanensis P. Oppenheim, 1919 † - (BITHYNIIDAE) (FOSSIL)
- giraldesi, Anodonta giraldesi J. Da Silva e Castro, 1883 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- giraldilla, Volvarina giraldilla J. Espinosa & J.A. Ortea, 2013 - (MARGINELLIDAE)
- Giraliapecten, Genus Giraliapecten Darragh & Kendrick, 1991 † (PECTINIDAE) (FOSSIL)
- giramica, Actinella giramica R.T. Lowe, 1852 - (HYGROMIIDAE)
- girardi, Bulla girardi J.V. Audouin, 1826 - syn of: Ventomnestia girardi (J.V. Audouin, 1826) - (BULLIDAE)
- girardi, Cylichna girardi J.V. Audouin, 1826 - syn of: Ventomnestia girardi (J.V. Audouin, 1826) - (CYLICHNIDAE)
- girardi, Cerodrillia girardi W.G. Lyons, 1972 - (DRILLIIDAE)
- girardi, Ventomnestia girardi (J.V. Audouin, 1826) - (MNESTIIDAE)
- girardi, Cylichnina girardi J.V. Audouin, 1826 - syn of: Ventomnestia girardi (J.V. Audouin, 1826) - (RETUSIDAE)
- girardi, Retusa girardi J.V. Audouin, 1826 - syn of: Ventomnestia girardi (J.V. Audouin, 1826) - (RETUSIDAE)
- Girardius, syn of: Subgenus Pseudobuliminus (Giardia) C.M.F. Ancey, 1907 (BRADYBAENIDAE)
- girardoti, Belemnites girardoti De Loriol, 1902 † - syn of: Hibolithes girardoti (De Loriol, 1902 †) - (BELEMNITELLIDAE) (FOSSIL)
- girardoti, Hibolithes girardoti (De Loriol, 1902 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- girardoti, Neoprionoceras girardoti (Loriol, 1902 †) - (OPPELIIDAE) (FOSSIL)
- girardoti, Pseudaganides girardoti (Loriol, 1903 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- Girardotia, Genus Girardotia Loriol, 1903 † (PHOLADOMYOIDEA (UNASSIGNED)) (FOSSIL)
- Girasia, Genus Girasia J.E. Gray, 1855 (ARIOPHANTIDAE)
- girathroa, Clausilia girathroa J.R. Bourguignat, 1877 - syn of: Clausilia rugosa parvula A.E.J. Férussac, 1807 - (CLAUSILIIDAE)
- giratum, Buccinum giratum P.F. Röding, 1798 - syn of: Babylonia zeylanica (J.B.P.A. Lamarck, 1822) - (BUCCINIDAE)
- giraudi, Limicolaria giraudi J.R. Bourguignat, 1885 - (ACHATINIDAE)
- giraudi, Bulimus giraudi J.R. Bourguignat, 1885 - (BULIMULIDAE)
- giraudi, Imerites giraudi (Kilian, 1888 †) - (HEMIHOPLITIDAE) (FOSSIL)
- giraudi, Iberites giraudi A. Hyatt, 1900 † - (HUNGARITIDAE) (FOSSIL)
- giraudi, Oliva giraudi A.E.M. Cossmann, 1913 † - (OLIVIDAE) (FOSSIL)
- giraudi, Lavigeria nassa giraudi (J.R. Bourguignat, 1885) - (PALUDOMIDAE)
- giraudi, Pisidium giraudi J.R. Bourguignat, 1885 - (SPHAERIIDAE)
- giraudi, Grandidieria burtoni giraudi J.R. Bourguignat, 1885 - (UNIONIDAE)
- giraudi, Valvata giraudi G.F. Dollfus, 1908 † - (VALVATIDAE) (FOSSIL)
- giraudi, Venus giraudi C. Gay, 1858 - syn of: Venus casina C. Linnaeus, 1758 - (VENERIDAE)
- giraudi, Neothauma giraudi J.R. Bourguignat, 1885 - (VIVIPARIDAE)
- giraudi multicostatus, Imerites giraudi multicostatus Tovbina, 1963 † - (HEMIHOPLITIDAE) (FOSSIL)
- Giraudia, syn of: Genus Bridouxia J.R. Bourguignat, 1885 (PALUDOMIDAE)
- Giraulus, syn of: Genus Gyraulus A.E.R. Agassiz in J.G.F. de Charpentier, 1837 (PLANORBIDAE)
- girauxi, Bonellitia girauxi A.E.M. Cossmann & G. Pissarro, 1913 † - (CANCELLARIIDAE) (FOSSIL)
- girauxi, Cypraea girauxi A.E.M. Cossmann & G. Pissarro, 1911 † - syn of: Cypraedia girauxi (A.E.M. Cossmann & G. Pissarro, 1913 †) - (CYPRAEIDAE) (FOSSIL)
- girauxi, Cypraedia girauxi (A.E.M. Cossmann & G. Pissarro, 1913 †) - (OVULIDAE) (FOSSIL)
- gireiorum, Helicella gireiorum W.A. Lindholm, 1926 - syn of: Helicopsis retowskii S. Clessin, 1883 - (HYGROMIIDAE)
- girgarinae, Torresitrachia girgarinae F. Köhler, 2011 - (CAMAENIDAE)
- girgillus, Crassispira girgillus Dolfus, 1899 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- girgyllus, Bolma girgyllus (L.A. Reeve, 1861) - (TURBINIDAE)
- giribeti, Nucinella giribeti E.A. Glover & D.W. Taylor, 2013 - (NUCINELLIDAE)
- giribeti, Eulimella giribeti A. Peñas & E. Rolán, 1997 - (PYRAMIDELLIDAE)
- girisus, Murex girisus A. De Gregorio, 1885 - syn of: Bolinus brandaris (C. Linnaeus, 1758) - (MURICIDAE)
- gironai, Gibberula gironai J. Espinosa & J.A. Ortea, 2007 - (CYSTISCIDAE)
- girondica, Arca girondica C. Mayer, 1868 † - (ARCIDAE) (FOSSIL)
- girondica, Columbella girondica É.A. Benoist in M.A. Peyrot, 1924 † - (COLUMBELLIDAE) (FOSSIL)
- girondica, Cuspidaria girondica É.A. Benoist, 1907 † - (CUSPIDARIIDAE) (FOSSIL)
- girondica, Helix girondica Noulet, 1854 † - syn of: Cepaea subglobosa (J.P.S. Grateloup, 1828 †) - (HELICIDAE) (FOSSIL)
- girondica, Hydrobia girondica Boettger in Degrange-Touzin, 1892 † - (HYDROBIIDAE) (FOSSIL)
- girondica, Julia girondica A.E.M. Cossmann & M.A. Peyrot, 1914 † - (JULIIDAE) (FOSSIL)
- girondica, Risella girondica É.A. Benoist, 1874 † - (LITTORINIDAE) (FOSSIL)
- girondica, Lymnaea girondica Noulet, 1854 † - (LYMNAEIDAE) (FOSSIL)
- girondica, Nassarius girondica M.A. Peyrot, 1924 † - (NASSARIIDAE) (FOSSIL)
- girondica umbilicaris, Hydrobia girondica umbilicaris A.E.M. Cossmann & M.A. Peyrot, 1918 † - (HYDROBIIDAE) (FOSSIL)
- girondicum, Cardium girondicum C. Mayer, 1866 † - (CARDIIDAE) (FOSSIL)
- girondicus, Cerithium girondicus C. Mayer, 1878 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (CERITHIIDAE) (FOSSIL)
- girondicus, Conus betulinoides girondicus M.A. Peyrot, 1930 - (CONIDAE)
- girondicus, Potamides girondicus (C. Mayer, 1878 †) - (POTAMIDIDAE) (FOSSIL)
- girottii, Hypnophila girottii D. Esu, 1978 - (COCHLICOPIDAE)
- Girtyana, Genus Girtyana Elias, 1938 † (NUCULANIDAE) (FOSSIL)
- girtyanus, Richardsonites girtyanus Ruzhentsev & Bogoslovskaya, 1971 † - (GLAPHYRITIDAE) (FOSSIL)
- girtyi, Agathiceras girtyi Böse, 1919 † - (AGATHICERATIDAE) (FOSSIL)
- girtyi, Aviculopecten girtyi Newell, 1938 † - (AVICULOPECTINIDAE) (FOSSIL)
- girtyi, Rayonnoceras girtyi Foerste & Teichert, 1930 † - syn of: Rayonnoceras vaughanianum (Girty, 1909 †) - (CARBACTINOCERATIDAE) (FOSSIL)
- girtyi, Waagenoceras girtyi Miller & Furnish, 1940 † - (CYCLOLOBIDAE) (FOSSIL)
- girtyi, Boesites girtyi (Plummer & P.H. Scott, 1937 †) - (DARAELITIDAE) (FOSSIL)
- girtyi, Streblopteria girtyi Hoare, 1993 † - (DELTOPECTINIDAE) (FOSSIL)
- girtyi, Plagioglypta girtyi Knight, 1940 † - (DENTALIIDAE) (FOSSIL)
- girtyi, Discotropis girtyi E.L. Yochelson, 1956 † - (EUOMPHALIDAE) (FOSSIL)
- girtyi, Eumorphoceras girtyi Elias, 1956 † - (GIRTYOCERATIDAE) (FOSSIL)
- girtyi, Gryphochiton girtyi (Hoare & Smith, 1984 †) - (GRYPHOCHITONIDAE) (FOSSIL)
- girtyi, Bactritimimus girtyi Flower & W.J. Gordon, 1959 † - (HEMATITIDAE) (FOSSIL)
- girtyi, Retispira girtyi E.L. Yochelson, 1960 † - syn of: Retispira lyelli (C. Gemmellaro, 1889 †) - (KNIGHTITIDAE) (FOSSIL)
- girtyi, Helminthochiton girtyi Hoare & Smith, 1984 † - syn of: Gryphochiton girtyi (Hoare & Smith, 1984 †) - (LEPTOCHITONIDAE) (FOSSIL)
- girtyi, Pseudovidrioceras girtyi (Miller & Cline, 1934 †) - (MARATHONITIDAE) (FOSSIL)
- girtyi, Neogeoceras girtyi (Miller & Furnish, 1940 †) - (MEDLICOTTIIDAE) (FOSSIL)
- girtyi, Nuculopsis girtyi H.G. Schenck, 1934 † - (NUCULIDAE) (FOSSIL)
- girtyi, Orbobactrites girtyi Mapes, 1979 † - (PARABACTRITIDAE) (FOSSIL)
- girtyi, Strophostylus girtyi (Knight, 1934 †) - (PLATYCERATIDAE) (FOSSIL)
- girtyi, Helictostylus girtyi Knight, 1934 † - syn of: Strophostylus girtyi (Knight, 1934 †) - (PLATYCERATIDAE) (FOSSIL)
- girtyi, Mitorthoceras girtyi W.J. Gordon, 1964 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- girtyi, Pseudozygopleura girtyi Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- girtyi, Gamizyga girtyi Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- girtyi, Soleniscus girtyi Erwin, 1988 † - (SOLENISCIDAE) (FOSSIL)
- girtyi, Reticycloceras girtyi W.J. Gordon, 1964 † - (SPYROCERATIDAE) (FOSSIL)
- girtyi, Vidrioceras girtyi Miller & Cline, 1934 † - syn of: Pseudovidrioceras girtyi (Miller & Cline, 1934 †) - (VIDRIOCERATIDAE) (FOSSIL)
- Girtyoceras, Genus Girtyoceras Wedekind , 1918 † (GIRTYOCERATIDAE) (FOSSIL)
- GIRTYOCERATIDAE Wedekind, 1918 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-DIMORPHOCERATOIDEA [Superfamily]) (FOSSIL)
- Girtypecten, Genus Girtypecten Newell, 1938 † (HETEROPECTINIDAE) (FOSSIL)
- Girtyspira, Genus Girtyspira Knight, 1936 † (MEEKOSPIRIDAE) (FOSSIL)
- girundica, Ondina girundica P. Lozouet, Lesport & Renard, 2001 † - (PYRAMIDELLIDAE) (FOSSIL)
- girva, Lindholmiola girva (I. Frivaldszky, 1835) - (HELICODONTIDAE)
- girvanense, Palaeoschisma girvanense J. Donald, 1902 † - (EOTOMARIIDAE) (FOSSIL)
- girvanensis, Phragmolites girvanensis (Reed, 1921 †) - (BUCANIIDAE) (FOSSIL)
- girvanensis, Kokenospira girvanensis Reed, 1921 † - (BUCANIIDAE) (FOSSIL)
- girvanensis, Tremanotus girvanensis Reed, 1921 † - syn of: Tremanotus dilatatus (J. de C. Sowerby & Murchison, 1839 †) - (BUCANIIDAE) (FOSSIL)
- girvanensis, Conradella girvanensis Reed, 1921 † - syn of: Phragmolites girvanensis (Reed, 1921 †) - (BUCANIIDAE) (FOSSIL)
- girvanensis, Hyolithes girvanensis Reed, 1909 † - (HYOLITHIDAE) (FOSSIL)
- girvanensis, Ectomaria girvanensis J. Donald, 1899 † - syn of: Ectomaria prisca (Billings, 1859 †) - (LOPHOSPIRIDAE) (FOSSIL)
- girvanensis, Spiroecus girvanensis Longst, 1924 † - (LOXONEMATIDAE) (FOSSIL)
- girvanensis, Pterotheca girvanensis Reed, 1909 † - (PTEROTHECIDAE) (FOSSIL)
- Girvania, syn of: Genus Spiroecus Longstaff, 1924 † (LOXONEMATIDAE) (FOSSIL)
- Girvanolithes, Genus Girvanolithes Malinky , 2003 † (CIRCOTHECIDAE) (FOSSIL)
- girvum, Cochlostoma girvum (M. Paulucci, 1879) - (COCHLOSTOMATIDAE)
- girzenbergense, Soetenichia girzenbergense (Kirchner, 1915 †) - (VLTAVIELLIDAE) (FOSSIL)
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