- grubbi, Aeolidia grubbi J.B. Vérany, 1853 - (AEOLIDIIDAE)
- grubei, Valvata grubei W. Dybowski, 1875 - syn of: Megalovalvata baicalensis (G. Gerstfeldt, 1859) - (VALVATIDAE)
- gruberi, Turbonilla gruberi L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- grubici, Torreites grubici Philip & Platel, 1998 † - (HIPPURITIDAE) (FOSSIL)
- grubii, Valvata grubii W. Dybowski, 1875 - syn of: Megalovalvata baicalensis (G. Gerstfeldt, 1859) - (VALVATIDAE)
- gruelli, Zeidora gruelli R. Janssen, 1984 † - (FISSURELLIDAE) (FOSSIL)
- gruendeli, Cryptaulax gruendeli A. Nützel & Erwin, 2004 † - (CRYPTAULACIDAE) (FOSSIL)
- gruendeli, Promathildia gruendeli A. Kaim, 2004 † - (GORDENELLIDAE) (FOSSIL)
- gruendeli, Ebala gruendeli S. Kiel & K. Bandel, 2001 † - (MURCHISONELLIDAE) (FOSSIL)
- gruendeli, Plocezyga gruendeli A. Kaim, 2004 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- grueneri, Conus grueneri L.A. Reeve, 1844 - syn of: Elisaconus litteratus (C. Linnaeus, 1758) - (CONIDAE)
- gruenewaldi, Nystia gruenewaldi W.R. Schlickum, 1970 † - (TRUNCATELLIDAE) (FOSSIL)
- Gruenewaldia, Genus Gruenewaldia Wφhrmann, 1889 (MYOPHORIIDAE) (FOSSIL)
- gruenewaldti, Stacheoceras gruenewaldti C. Gemmellaro, 1887 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- gruenwaldti, Plagiostomoceras gruenwaldti (Barrande, 1866 †) - (SPHAERORTHOCERATIDAE) (FOSSIL)
- gruereanus, Napaeus gruereanus (J.P.A. Grasset, 1857) - (ENIDAE)
- grueti, Nassarius grueti Brébion, 1964 † - syn of: Nassarius poteriensis F. Van Dingenen, L. Ceulemans & al., 2015 † - (NASSARIIDAE) (FOSSIL)
- Grumantoceras, Genus Grumantoceras Sobolev , 1989 (TAINOCERATIDAE) (FOSSIL)
- grumosus, Chelyconus grumosus L.W. Dillwyn, 1817 ex D.C. Solander MS - syn of: Pionoconus catus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- grumulus, Landouria grumulus (H.H. Godwin-Austen, 1891) - (CAMAENIDAE)
- grundense, Cymatium grundense (R. Hoernes & M. Auinger, 1884 †) - (RANELLIDAE) (FOSSIL)
- Grundensia, Genus Grundensia Kautsky, 1939 (CARDIIDA (UNASSIGNED)) (FOSSIL)
- grundensis, Arca grundensis C. Mayer, 1898 † - (ARCIDAE) (FOSSIL)
- grundifera, Daphnella grundifera (W.H. Dall, 1927) - (RAPHITOMIDAE)
- grundifera, Gymnobela grundifera W.H. Dall, 1927 - syn of: Daphnella grundifera (W.H. Dall, 1927) - (RAPHITOMIDAE)
- grunei, Doryssa grunei (I.H. Jonas, 1844) - (PACHYCHILIDAE)
- gruneri, Argonauta gruneri R.W. Dunker, 1852 - syn of: Argonauta nouryi E.L. Lorois, 1852 - (ARGONAUTIDAE)
- gruneri, Buccinum gruneri R.W. Dunker, 1846 - syn of: Nassarius gruneri (R.W. Dunker, 1846) - (BUCCINIDAE)
- gruneri, Drymaeus gruneri L. Pfeiffer, 1846 - syn of: Drymaeus columbianus (H.C. Lea, 1838) - (BULIMULIDAE)
- gruneri, Chloritis gruneri W. Kobelt, 1896 - (CAMAENIDAE)
- gruneri, Cerion gruneri L. Pfeiffer, 1847 - (CERIONIDAE)
- gruneri, Conus gruneri L.A. Reeve, 1844 - syn of: Elisaconus litteratus (C. Linnaeus, 1758) - (CONIDAE)
- gruneri, Vexillum gruneri L.A. Reeve, 1844 - (COSTELLARIIDAE)
- gruneri, Cassidula gruneri L. Pfeiffer, 1854 - syn of: Cassidula sowerbyana (J.F. Gmelin, 1791) - (ELLOBIIDAE)
- gruneri, Haliotis gruneri L.A. Reeve, 1846 - syn of: Haliotis diversicolor L.A. Reeve, 1846 - (HALIOTIDAE)
- gruneri, Phlyseogrammoceras gruneri (Dumortier, 1874 †) - (HILDOCERATIDAE) (FOSSIL)
- gruneri, Adula gruneri (R.A. Philippi, 1851) - (MYTILIDAE)
- gruneri, Modiolus gruneri R.A. Philippi, 1851 - syn of: Adula gruneri (R.A. Philippi, 1851) - (MYTILIDAE)
- gruneri, Nassarius gruneri (R.W. Dunker, 1846) - (NASSARIIDAE)
- gruneri, Nassa gruneri R.W. Dunker, 1846 - syn of: Nassarius gruneri (R.W. Dunker, 1846) - (NASSARIIDAE)
- gruneri, Orthalicus gruneri (H. Strebel, 1909) - (ORTHALICIDAE)
- gruneri, Chondropomium gruneri (L. Pfeiffer, 1846) - (POMATIIDAE)
- gruneri, Pteria gruneri R.W. Dunker, 1872 - syn of: Pteria hirundo (C. Linnaeus, 1758) - (PTERIIDAE)
- gruneri, Semele gruneri (L.A. Reeve, 1853) - (SEMELIDAE)
- gruneri, Tegula gruneri (R.A. Philippi, 1849) - (TEGULIDAE)
- gruneri, Carswellena gruneri (R.A. Philippi, 1846) - (TURBINIDAE)
- gruneri, Polystira gruneri (R.A. Philippi, 1848) - (TURRIDAE)
- gruneri, Autocoptis gruneri (R.W. Dunker, 1844) - (UROCOPTIDAE)
- gruneri, Macrocallista gruneri (P. Oppenheim, 1915 †) - (VENERIDAE) (FOSSIL)
- gruneri, Dosinia gruneri (R.A. Philippi, 1847) - (VENERIDAE)
- Gruneria, syn of: Genus Phlyseogrammoceras Wunstorf, 1904 (HILDOCERATIDAE) (FOSSIL)
- grunerianus, Mytilus grunerianus R.W. Dunker, 1853 - syn of: Mytilus edulis C. Linnaeus, 1758 - (MYTILIDAE)
- grunerianus, Polinices grunerianus (R.A. Philippi, 1852) - (NATICIDAE)
- grus, Chioneryx grus (F.S. Holmes, 1858) - (VENERIDAE)
- grus, Timoclea grus F.S. Holmes, 1858 - syn of: Chioneryx grus (F.S. Holmes, 1858) - (VENERIDAE)
- grusina, Lytopelte grusina H.R. Simroth, 1901 - syn of: Deroceras caucasicum (H.R. Simroth, 1901) - (LIMACIDAE)
- gruveli, Achatina gruveli P. Dautzenberg, 1921 - (ACHATINIDAE)
- gruveli, Actaeopyramis gruveli P. Dautzenberg, 1910 - syn of: Turbonilla gruveli P. Dautzenberg, 1912 - (CIMIDAE)
- gruveli, Gibberula gruveli (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (CYSTISCIDAE)
- gruveli, Dentalium gruveli P. Dautzenberg, 1910 - syn of: Fustiaria gruveli (P. Dautzenberg, 1910) - (DENTALIIDAE)
- gruveli, Opalia gruveli M.E.A. de Boury MS - syn of: Opalia gaini (M.E.A. de Boury in É. Lamy, 1923) - (EPITONIIDAE)
- gruveli, Fustiaria gruveli (P. Dautzenberg, 1910) - (FUSTIARIIDAE)
- gruveli, Eucithara gruveli (P. Dautzenberg, 1932) - (MANGELIIDAE)
- gruveli, Marginella gruveli A.R.J.B. Bavay, 1912 - syn of: Gibberula gruveli (A.R.J.B. Bavay in P. Dautzenberg, 1912) - (MARGINELLIDAE)
- gruveli, Vaughtia gruveli (P. Dautzenberg, 1910) - (MURICIDAE)
- gruveli, Bullia gruveli (P. Dautzenberg, 1910) - (NASSARIIDAE)
- gruveli, Nassarius gruveli W. Adam & J. Knudsen, 1984 - (NASSARIIDAE)
- gruveli, Dorsanum gruveli P. Dautzenberg, 1910 - syn of: Bullia gruveli (P. Dautzenberg, 1910) - (NASSARIIDAE)
- gruveli, Payraudeautia gruveli (P. Dautzenberg, 1910) - (NATICIDAE)
- gruveli, Natica gruveli P. Dautzenberg, 1910 - syn of: Payraudeautia gruveli (P. Dautzenberg, 1910) - (NATICIDAE)
- gruveli, Nuculana gruveli (M. Nicklés, 1952) - (NUCULANIDAE)
- gruveli, Scutellina gruveli (P. Dautzenberg, 1929) - (PHENACOLEPADIDAE)
- gruveli, Phenacolepas gruveli P. Dautzenberg, 1929 - syn of: Scutellina gruveli (P. Dautzenberg, 1929) - (PHENACOLEPADIDAE)
- gruveli, Turbonilla gruveli P. Dautzenberg, 1912 - (PYRAMIDELLIDAE)
- gruveli, Terebra gruveli P. Dautzenberg, 1912 - syn of: Terebra brevicula (G.P. Deshayes, 1859) - (TEREBRIDAE)
- gruveli, Discopsis gruveli (P. Dautzenberg, 1912) - (TORNIDAE)
- gruveli, Anodonta gruveli L.J.J.M. Pérès, 1938 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- gruveli paucipunctata, Payraudeautia gruveli paucipunctata P. Dautzenberg, 1910 - (NATICIDAE)
- Gruvelia, Genus Gruvelia J.J. Risbec, 1928 (CHROMODORIDIDAE)
- gruzovi, Guyvalvoria gruzovi A.V. Martynov, 2006 - (FIONIDAE)
- Gryaulus, Genus Gryaulus Charpentier, 1837 (PLANORBIDAE) (FOSSIL)
- gryci, Neilo gryci Marincovich Jr., 1993 † - (MALLETIIDAE) (FOSSIL)
- Grycia, Subgenus Cleoniceras (Grycia) Jeletzky, 1980 (HOPLITIDAE) (FOSSIL)
- gryphaea, Crepidula gryphaea É.A.A. Locard, 1898 - (CALYPTRAEIDAE)
- gryphaea, Corbicula gryphaea P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- Gryphaea, Genus Gryphaea Lamarck, 1801 (GRYPHAEIDAE) (FOSSIL)
- gryphaeata, Cassianella gryphaeata (Münster, 1841 †) - (CASSIANELLIDAE) (FOSSIL)
- gryphaeata, Avicula gryphaeata Münster, 1841 † - syn of: Cassianella gryphaeata (Münster, 1841 †) - (PTERIIDAE) (FOSSIL)
- GRYPHAEIDAE Vyalov, 1936 - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-OSTREIDA [Order]-OSTREOIDEA [Superfamily])
- Gryphaeligmus, Genus Gryphaeligmus Lewy, 1982 (PTERIIDA (UNASSIGNED)) (FOSSIL)
- Gryphaella, Genus Gryphaella Chetsova, 1969 (GRYPHAEIDAE) (FOSSIL)
- gryphaeoides, Aucellina gryphaeoides (Sowerby, 1836 †) - (BUCHIIDAE) (FOSSIL)
- gryphaeoides, Parainoceramya gryphaeoides (Schlotheim, 1820 †) - (INOCERAMIDAE) (FOSSIL)
- gryphaeoides, Monotis gryphaeoides von Schlotheim, 1816 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816 †) - (MONOTIDAE) (FOSSIL)
- gryphaeoides, Avicula gryphaeoides Sowerby, 1829 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816 †) - (PTERIIDAE) (FOSSIL)
- Gryphaeolamellotis, Genus Gryphaeolamellotis Horvath, 1966 (LAMELLOTIDAE) (FOSSIL)
- Gryphaeostrea, Genus Gryphaeostrea Conrad, 1865 (GRYPHAEIDAE) (FOSSIL)
- Gryphellina, Genus Gryphellina Iredale, 1929 (LIMIDAE) (FOSSIL)
- gryphina, Pseudochama gryphina (J.B.P.A. Lamarck, 1819) - (CHAMIDAE)
- gryphina, Chama gryphoides gryphina Wood, 1879 - (CHAMIDAE)
- gryphina, Pycnodonte gryphina (G.P. Deshayes, 1832 †) - (GRYPHAEIDAE) (FOSSIL)
- gryphina, Ostrea gryphina G.P. Deshayes, 1832 † - syn of: Pycnodonte gryphina (G.P. Deshayes, 1832 †) - (OSTREIDAE) (FOSSIL)
- Gryphites, syn of: Genus Gryphaea Lamarck, 1801 (GRYPHAEIDAE) (FOSSIL)
- gryphitica, Jaworskiella gryphitica (Möricke, 1894 †) - (TRIGONIIDAE) (FOSSIL)
- Gryphochiton, Genus Gryphochiton Gray , 1847 (GRYPHOCHITONIDAE) (FOSSIL)
- GRYPHOCHITONIDAE Pilsbury, 1900 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]) (FOSSIL)
- gryphoides, Chama gryphoides C. Linnaeus, 1758 - (CHAMIDAE)
- gryphoides, Mourlonia gryphoides J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- gryphoides, Cardiomorpha gryphoides de Koninck, 1876 † - syn of: Megadesmus gryphoides (de Koninck, 1876 †) - (GRAMMYSIIDAE) (FOSSIL)
- gryphoides, Kozelconcha gryphoides (J. Perner, 1907 †) - (KITTLIDISCIDAE) (FOSSIL)
- gryphoides, Megadesmus gryphoides (de Koninck, 1876 †) - (MEGADESMIDAE) (FOSSIL)
- gryphoides, Crassostrea gryphoides (Schlotheim, 1813 †) - (OSTREIDAE) (FOSSIL)
- gryphoides, Ostrea gryphoides R.B. Newton & E.A. Smith, 1912 - syn of: Crassostrea belcheri (G.B. II Sowerby, 1871) - (OSTREIDAE)
- gryphoides, Crassostrea gryphoides R.B. Newton & E.A. Smith, 1912 - syn of: Crassostrea belcheri (G.B. II Sowerby, 1871) - (OSTREIDAE)
- gryphoides, Requienia gryphoides Matheron, 1842 † - (REQUIENIIDAE) (FOSSIL)
- gryphoides cuttackensis, Ostrea gryphoides cuttackensis R.B. Newton & E.A. Smith, 1912 - syn of: Crassostrea belcheri (G.B. II Sowerby, 1871) - (OSTREIDAE)
- gryphoides cuttackensis, Crassostrea gryphoides cuttackensis R.B. Newton & E.A. Smith, 1912 - syn of: Crassostrea belcheri (G.B. II Sowerby, 1871) - (OSTREIDAE)
- gryphoides dwarkaensis, Crassostrea gryphoides dwarkaensis C. Li, Haws, Wang & H. Guo, 2017 - (OSTREIDAE)
- gryphoides gryphina, Chama gryphoides gryphina Wood, 1879 - (CHAMIDAE)
- gryphoides mioasperella, Chama gryphoides mioasperella F. Sacco, 1899 † - (CHAMIDAE) (FOSSIL)
- gryphoides tanintharyiensis, Crassostrea gryphoides tanintharyiensis C. Li, Haws, Wang & H. Guo, 2017 - (OSTREIDAE)
- gryphus, Aviculopecten gryphus Newell, 1938 † - (AVICULOPECTINIDAE) (FOSSIL)
- Gryphus, syn of: Genus Chama C. Linnaeus, 1758 (CHAMIDAE)
- gryphus, Cremnodinotus gryphus H.X. Liu, 1987 † - syn of: Ocruranus subpentaedrus H.X. Liu, 1979 † - (HALKIERIIDAE) (FOSSIL)
- Grypoceras, Genus Grypoceras Hyatt, 1883 (TAINOCERATIDAE) (FOSSIL)
- GRYPOCERATIDAE Hyatt, 1900 - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-NAUTILIDA [Order]-TRIGONOCERATOIDEA [Superfamily]) (FOSSIL)
- grypoceroides, Foordiceras grypoceroides (Reed, 1931 †) - (KONINCKIOCERATIDAE) (FOSSIL)
- grypoceroides, Pseudometacoceras grypoceroides Reed, 1931 † - syn of: Foordiceras grypoceroides (Reed, 1931 †) - (TAINOCERATIDAE) (FOSSIL)
- Gryponautilus, Genus Gryponautilus Mojsisovics, 1902 (GRYPOCERATIDAE) (FOSSIL)
- Grzegorzewskia, Genus Grzegorzewskia Engeser & Lehmann, 1994 (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- grzybowski, Lirophora grzybowski A.A. Olsson, 1932 † - (VENERIDAE) (FOSSIL)
- guacoldae, Buccinaria guacoldae C. Nielsen, 2003 † - (RAPHITOMIDAE) (FOSSIL)
- guadalajarensis, Linisia hindsi guadalajarensis (H.A. Pilsbry, 1910) - (POLYGYRIDAE)
- guadalajarensis, Salasiella guadalajarensis H.A. Pilsbry & T.D.A. Cockerell, 1926 - (SPIRAXIDAE)
- guadalcanalensis, Papuina guadalcanalensis J.C. Cox, 1871 - syn of: Papuina guadalcanarensis J.C. Cox, 1871 - (CAMAENIDAE)
- guadalcanalensis, Perrinia guadalcanalensis Vilvens, 2017 - (CHILODONTIDAE)
- guadalcanarensis, Papuina guadalcanarensis J.C. Cox, 1871 - (CAMAENIDAE)
- guadaloupaeforme, Parengonoceras guadaloupaeforme (Sommermeier, 1910 †) - (KNEMICERATIDAE) (FOSSIL)
- guadaloupensis, Hemitoma guadaloupensis G.B. II Sowerby, 1863 - syn of: Hemitoma octoradiata (J.F. Gmelin, 1791) - (FISSURELLIDAE)
- guadaloupensis, Haminoea guadaloupensis G.B. II Sowerby, 1868 - syn of: Haminoea antillarum (A.V.M.D. D'Orbigny, 1841) - (HAMINOEIDAE)
- guadaloupensis, Alcadia guadaloupensis G.B. Sowerby, 1842 - syn of: Alcadia guadeloupensis (G.B. Sowerby, 1842) - (HELICINIDAE)
- guadaloupensis, Planorbis guadaloupensis G.B. I Sowerby, 1822 - syn of: Biomphalaria glabrata (T. Say, 1818) - (PLANORBIDAE)
- guadaloupensis, Pleurodonte guadaloupensis H.A. Pilsbry & T.D.A. Cockerell, 1889 - syn of: Pleurodonte guadeloupensis (H.A. Pilsbry & T.D.A. Cockerell, 1889) - (PLEURODONTIDAE)
- guadaloupensis, Triphora guadaloupensis E. Rolán & R. Fernández-Garcés, 2008 - (TRIPHORIDAE)
- Guadalquivirospira, Genus Guadalquivirospira Gubanov & al., 2004 (HELCIONELLIDAE) (FOSSIL)
- guadalupae, Exogyra guadalupae A. Whitney, 1937 † - (GRYPHAEIDAE) (FOSSIL)
- guadalupeana, Astraea guadalupeana S.S. Berry, 1957 - syn of: Pomaulax gibberosa (L.W. Dillwyn, 1817) - (TURBINIDAE)
- guadalupense, Mexicoceras guadalupense (Girty, 1909 †) - (CYCLOLOBIDAE) (FOSSIL)
- guadalupense, Michelinoceras guadalupense (Girty, 1909 †) - (MICHELINOCERATIDAE) (FOSSIL)
- guadalupense, Orthoceras guadalupense Girty, 1909 † - syn of: Michelinoceras guadalupense (Girty, 1909 †) - (ORTHOCERATIDAE) (FOSSIL)
- guadalupensis, Ampullaria guadalupensis E.C. Von Martens, 1857 - syn of: Pomacea glauca (C. Linnaeus, 1758) - (AMPULLARIIDAE)
- guadalupensis, Aviculopecten guadalupensis Girty, 1909 † - syn of: Guizhoupecten xiaosanjiarensis X.L. Liang, 1980 † - (AVICULOPECTINIDAE) (FOSSIL)
- guadalupensis, Allothyra guadalupensis (H.A. Pilsbry, 1927) - (BINNEYIDAE)
- guadalupensis, Bulimulus guadalupensis J.G. Bruguière, 1792 - syn of: Bulimulus guadelupensis (J.G. Bruguière, 1792) - (BULIMULIDAE)
- guadalupensis, Crassatella guadalupensis D'Orbigny, 1853 - syn of: Crassinella lunulata (T.A. Conrad, 1834) - (CRASSATELLIDAE)
- guadalupensis, Crassinella guadalupensis D'Orbigny in R. de la Sagra, 1853 - syn of: Crassinella lunulata (T.A. Conrad, 1834) - (CRASSATELLIDAE)
- guadalupensis, Buliminus guadalupensis (J.G. Bruguière, 1789) - (ENIDAE)
- guadalupensis, Fusinus guadalupensis Callomon & Snyder, 2017 - (FASCIOLARIIDAE)
- guadalupensis, Glycymeris guadalupensis A.M. Strong, 1938 - syn of: Glycymeris septentrionalis (A.T. von Middendorff, 1849) - (GLYCYMERIDIDAE)
- guadalupensis, Haliotis fulgens guadalupensis R.R. Talmadge, 1964 - (HALIOTIDAE)
- guadalupensis, Lepidozona guadalupensis A. Ferreira, 1978 - (ISCHNOCHITONIDAE)
- guadalupensis, Agathotoma guadalupensis Espinosa & Ortea, 2017 - (MANGELIIDAE)
- guadalupensis, Eumedlicottia guadalupensis Plummer & P.H. Scott, 1937 † - syn of: Eumedlicottia burckhardti (Böse, 1919 †) - (MEDLICOTTIIDAE) (FOSSIL)
- guadalupensis, Muricopsis guadalupensis B. Garrigues & D. Merle, 2014 - (MURICIDAE)
- guadalupensis, Engoniophos guadalupensis S.A.A. Petit De La Saussaye, 1852 - syn of: Engoniophos unicinctus (T. Say, 1826) - (NASSARIIDAE)
- guadalupensis, Pallacera guadalupensis S.A.A. Petit De La Saussaye, 1852 - syn of: Engoniophos unicinctus (T. Say, 1826) - (NASSARIIDAE)
- guadalupensis, Pteria guadalupensis Girty, 1909 † - syn of: Leptodesma guadalupensis (Girty, 1909 †) - (PTERIIDAE) (FOSSIL)
- guadalupensis, Leptodesma guadalupensis (Girty, 1909 †) - (PTERINEIDAE) (FOSSIL)
- guadalupensis, Striopupilla guadalupensis H.A. Pilsbry, 1927 - (PUPILLIDAE)
- guadalupensis, Rissoina guadalupensis Strong, 1938 - (RISSOINIDAE)
- guadalupensis, Tellina guadalupensis A.V.M.D. D'Orbigny, 1853 - syn of: Serratina aequistriata (T. Say, 1824) - (TELLINIDAE)
- guadalupensis, Turbo guadalupensis Shumard, 1859 † - syn of: Turbo zonatus Kirchner, 1915 † - (TURBINIDAE) (FOSSIL)
- guadalupensis, Quincuncina guadalupensis C.B. Wurtz, 1950 - syn of: Fusconaia mitchelli (W.H. Dall, 1896) - (UNIONIDAE)
- guadalupensis, Nearctula rowellii guadalupensis (H.A. Pilsbry, 1927) - (VERTIGINIDAE)
- guadalupina, Micrarionta guadalupina (W.H. Dall in H.A. Pilsbry, 1898) - (HELMINTHOGLYPTIDAE)
- guadaluplana, Micrarionta guadaluplana (H.A. Pilsbry & E.G. Vanatta, 1898) - (HELMINTHOGLYPTIDAE)
- guadelopensis, Moitessieria guadelopensis H.D. Boeters, 2003 - (MOITESSIERIIDAE)
- guadeloupensis, Bulimulus guadeloupensis J.G. Bruguière, 1792 - syn of: Bulimulus guadelupensis (J.G. Bruguière, 1792) - (BULIMULIDAE)
- guadeloupensis, Pachybathron guadeloupensis F. Boyer & Lamy, 2014 - (CYSTISCIDAE)
- guadeloupensis, Clathrodrillia guadeloupensis P.J. Fallon, 2016 - (DRILLIIDAE)
- guadeloupensis, Alcadia guadeloupensis (G.B. Sowerby, 1842) - (HELICINIDAE)
- guadeloupensis, Amphicyclotus guadeloupensis P. Bartsch, 1942 - (NEOCYCLOTIDAE)
- guadeloupensis, Oleacina guadeloupensis L. Pfeiffer, 1856 - (OLEACINIDAE)
- guadeloupensis, Physa guadeloupensis S. Clessin, 1885 - syn of: Aplexa marmorata L. Guilding, 1828 - (PHYSIDAE)
- guadeloupensis, Plesiophysa guadeloupensis (P. Fischer in H.P. Mazé, 1883) - (PLANORBIDAE)
- guadeloupensis, Pleurodonte guadeloupensis (H.A. Pilsbry & T.D.A. Cockerell, 1889) - (PLEURODONTIDAE)
- guadeloupensis, Zebinella guadeloupensis M.J. Faber & R.G. Moolenbeek, 2013 - (RISSOINIDAE)
- guadeloupensis, Parviturbo guadeloupensis F. Rubio, E. Rolán & R. Fernández-Garcés, 2015 - (SKENEIDAE)
- guadeloupensis, Schwartziella guadeloupensis Paulmier, 2017 - (ZEBINIDAE)
- guadeloupensis dominicana, Pleurodonte guadeloupensis dominicana (H.A. Pilsbry & T.D.A. Cockerell, 1889) - (PLEURODONTIDAE)
- guadelupa, Acmaea uncinata guadelupa (J.M.J. Christiaens, 1976) - (ACMAEIDAE)
- guadelupensis, Ampullaria guadelupensis E.C. Von Martens, 1857 - syn of: Pomacea glauca (C. Linnaeus, 1758) - (AMPULLARIIDAE)
- guadelupensis, Bulimulus guadelupensis (J.G. Bruguière, 1792) - (BULIMULIDAE)
- guadelupensis, Mactra guadelupensis C.A. Récluz, 1852 - syn of: Mulinia cleryana (A.V.M.D. D'Orbigny, 1846) - (MACTRIDAE)
- guadelupensis, Mulinia guadelupensis C.A. Récluz, 1852 - syn of: Mulinia cleryana (A.V.M.D. D'Orbigny, 1846) - (MACTRIDAE)
- guadelupensis, Pallacera guadelupensis (R.E. Petit, 1852 †) - (NASSARIIDAE) (FOSSIL)
- guadelupensis, Engoniophos guadelupensis S.A.A. Petit De La Saussaye, 1852 - syn of: Engoniophos unicinctus (T. Say, 1826) - (NASSARIIDAE)
- guadelupensis, Succinea guadelupensis W.H. Dall, 1900 - (SUCCINEIDAE)
- guadelupensis, Cyathodonta guadelupensis W.H. Dall, 1903 † - (THRACIIDAE) (FOSSIL)
- guadelupensis acutus, Bulimulus guadelupensis acutus W.E. Leach, 1815 - (BULIMULIDAE)
- guadelupensis alba, Bulimulus guadelupensis alba G.B. I Sowerby, 1839 - (BULIMULIDAE)
- guadianensis, Theodoxus guadianensis M.de la Paz Graells, 1846 - (NERITIDAE)
- guadianensis valentina, Theodoxus guadianensis valentina M.de la Paz Graells, 1846 - (NERITIDAE)
- guadianiensis, Theodoxus guadianiensis P.M.A. Morelet, 1845 - syn of: Theodoxus fluviatilis (C. Linnaeus, 1758) - (NERITIDAE)
- Guadiella, Genus Guadiella H.D. Boeters, 2003 (HYDROBIIDAE)
- guadryana, Amberleya guadryana d'Orbigny † - (EUCYCLIDAE) (FOSSIL)
- guaduasana, Acostaea guaduasana D'Orbigny, 1851 - syn of: Acostaea rivolii (G.P. Deshayes, 1827) - (ETHERIIDAE)
- guaduasensis, Ampullaria guaduasensis Anderson, 1928 † - (AMPULLARIIDAE) (FOSSIL)
- guadurensis, Gemmula granosa guadurensis J.C. Melvill, 1917 - (TURRIDAE)
- guagga, Orthalicus guagga H. Strebel, 1909 - (ORTHALICIDAE)
- guahan, Halgerda guahan C.H. Carlson & P.J. Hoff, 1993 - (DISCODORIDIDAE)
- guahybae, Unio guahybae C.T. Simpson, 1900 - syn of: Diplodon expansus (H.C. Küster, 1853) - (UNIONIDAE)
- guahybensis, Cyanocyclas guahybensis W.B. Marshall, 1927 - syn of: Corbicula limosa (W.G. Maton, 1809) - (CYRENIDAE)
- guaibensis, Biomphalaria tenagophila guaibensis W.L. Paraense, 1984 - (PLANORBIDAE)
- guaica, Anachis guaica (C.J. Maury, 1925 †) - (COLUMBELLIDAE) (FOSSIL)
- guaica, Marginella guaica C.J. Maury, 1925 † - (MARGINELLIDAE) (FOSSIL)
- guaicanamarensis, Wrightudora aguayoi guaicanamarensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- guaicanamarensis, Heterocoptis guaicanamarensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guaicurana, Turbonilla guaicurana A.M. Strong, 1949 - (PYRAMIDELLIDAE)
- guairensis, Eudolichotis distorta guairensis (F.P. Jousseaume, 1889) - (AMPHIBULIMIDAE)
- guajabaense, Cerion guajabaense M.I. Sánchez Roig, 1951 - (CERIONIDAE)
- guajabanaensis, Trilamellaxis parallela guajabanaensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guajabanense, Opisthosiphon subobtectum guajabanense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- guajacoensis, Centralia turgida guajacoensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Guajaibona, Genus Guajaibona C. de la Torre & P. Bartsch, 1941 (POMATIIDAE)
- guajarana, Oxyrhombus guajarana F.C. Baker, 1913 - (HELICINIDAE)
- guajatacus, Pecten guajatacus C.J. Maury, 1920 † - (PECTINIDAE) (FOSSIL)
- guajatica, Hawaiarca guajatica (L.G. Sheldon & C.J. Maury, 1920 †) - (ARCIDAE) (FOSSIL)
- guajenensis, Torrecoptis guajenensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guajenensis obsoleta, Torrecoptis guajenensis obsoleta C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guajira, Volvarina guajira J. Espinosa & J.A. Ortea, 1998 - (MARGINELLIDAE)
- gualalaensis, Protocypraea gualalaensis F.M. Anderson, 1958 † - (CYPRAEIDAE) (FOSSIL)
- gualbertoi, Mayabina gualbertoi (A. Cousin, 1887) - (PHYSIDAE)
- gualfinense, Cochlostoma gualfinense C. De Stefani, 1879 - syn of: Cochlostoma crosseanum (M. Paulucci, 1879) - (COCHLOSTOMATIDAE)
- gualteriana, Columbella gualteriana A. Risso, 1826 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- gualteriana, Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- gualteriana, Natica gualteriana M. Couturier, 1907 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- gualteriana, Notocochlis gualteriana C.A. Récluz, 1844 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- gualteriana burnupi, Natica gualteriana burnupi E.A. Smith, 1903 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- gualterianum, Calliostoma gualterianum (R.A. Philippi, 1848) - (CALLIOSTOMATIDAE)
- gualterianus, Conus gualterianus P.F. Röding, 1798 - syn of: Lindaconus spurius (J.F. Gmelin, 1791) - (CONIDAE)
- gualterianus, Iberus gualterianus C. Linnaeus, 1758 - syn of: Iberus gualtieranus (C. Linnaeus, 1758) - (HELICIDAE)
- gualterianus, Trochus gualterianus R.A. Philippi, 1848 - syn of: Calliostoma gualterianum (R.A. Philippi, 1848) - (TROCHIDAE)
- gualterianus cobosi, Iberus gualterianus cobosi C.M. Ibáñez & M.R. Alonso, 1977 - syn of: Iberus marmoratus cobosi (C.M. Ibáñez & M.R. Alonso, 1977) - (HELICIDAE)
- gualterianus guiraoanus, Iberus gualterianus guiraoanus E.A. Rossmässler, 1854 - syn of: Iberus marmoratus guiraoanus (L. Pfeiffer, 1853) - (HELICIDAE)
- gualterianus marmoratus, Iberus gualterianus marmoratus A.E.J. Férussac, 1823 - syn of: Iberus marmoratus A.E.J. Férussac, 1823 - (HELICIDAE)
- gualtieranus, Iberus gualtieranus (C. Linnaeus, 1758) - (HELICIDAE)
- gualtieranus angustatus, Iberus gualtieranus angustatus E.A. Rossmässler, 1854 - (HELICIDAE)
- gualtieranus laurenti, Iberus gualtieranus laurenti J.R. Bourguignat, 1870 - (HELICIDAE)
- gualtieranus mariae, Iberus gualtieranus mariae (C. Cobos, 1979) - (HELICIDAE)
- gualtieranus minor, Iberus gualtieranus minor B. Serradell, 1912 - (HELICIDAE)
- gualtieranus posthumus, Iberus gualtieranus posthumus F. Haas, 1934 - (HELICIDAE)
- gualtieranus rhodopeplus, Iberus gualtieranus rhodopeplus J.B. Aguilar-Amat, 1925 - (HELICIDAE)
- gualtieriana, Natica gualtieriana M. Couturier, 1907 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- gualtierianus, Sigaretus gualtierianus C.A. Récluz, 1851 - syn of: Sinum planulatum (C.A. Récluz, 1843) - (NATICIDAE)
- gualtierianus alonensis, Iberus gualtierianus alonensis A.E.J. Férussac, 1821 - syn of: Iberus alonensis (A.E.J. Férussac, 1821) - (HELICIDAE)
- gualtierii, Architectonica gualtierii R. Bieler, 1993 - (ARCHITECTONICIDAE)
- gualtierii, Trochus gualtierii H.C. Weinkauff, 1868 - syn of: Calliostoma gualterianum (R.A. Philippi, 1848) - (TROCHIDAE)
- gualtierii, Voluta gualtierii A. Scacchi, 1832 - syn of: Pisania striata (J.F. Gmelin, 1791) - (VOLUTIDAE)
- gualtierocampesinus, Iberus campesinus gualtierocampesinus (B. Serradell, 1912) - (HELICIDAE)
- gualtieroloxanus, Iberus gualtieroloxanus E. Garcia San Nicolás, 1957 - (HELICIDAE)
- guamaense, Volvarina guamaense J. Espinosa, J.A. Ortea & Y.L. Diez, 2015 - (MARGINELLIDAE)
- guamaensis, Uncinicoptis hidalgoi guamaensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guamaensis, Tomelasmus adnatus guamaensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guamaensis, Capillacea angustior guamaensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Guamampa, Genus Guamampa A.A. Schileyko, 1996 (BRADYBAENIDAE)
- guamartemes, Hemicycla guamartemes J.P.A. Grasset, 1857 - (HELICIDAE)
- guamata, Hemitrichiella guamata G.B. Sowerby - (HELICARIONIDAE)
- guamblinensis, Euspira guamblinensis D. Frassinetti & Covacevich, 1995 † - (NATICIDAE) (FOSSIL)
- guamense, Phyllodesmium guamense F.W. Avila, E. Ballesteros & al., 1998 - (FACELINIDAE)
- guamensis, Odontoglaja guamensis W.B. Rudman, 1978 - (AGLAJIDAE)
- guamensis, Micromelo guamensis (J.R.C. Quoy & J.P. Gaimard, 1825) - (APLUSTRIDAE)
- guamensis, Omphalotropis guamensis (L. Pfeiffer, 1857) - (ASSIMINEIDAE)
- guamensis, Assiminea nitida guamensis R.T. Abbott, 1949 - (ASSIMINEIDAE)
- guamensis, Parachiton guamensis H. Saito, 1996 - (LEPTOCHITONIDAE)
- guamensis, Favartia guamensis W.K. Emerson & A. D'Attilio, 1979 - syn of: Favartia crouchi (G.B. III Sowerby, 1894) - (MURICIDAE)
- guamensis, Nerita guamensis J.R.C. Quoy & J.P. Gaimard, 1834 - (NERITIDAE)
- guamensis, Partula guamensis L. Pfeiffer, 1846 - (PARTULIDAE)
- guamensis, Bullaea guamensis J.R.C. Quoy & J.P. Gaimard, 1825 - syn of: Micromelo guamensis (J.R.C. Quoy & J.P. Gaimard, 1825) - (PHILINIDAE)
- guamensis, Phyllidia guamensis (D.J. Brunckhorst, 1993) - (PHYLLIDIIDAE)
- guamensis, Fryeria guamensis D.J. Brunckhorst, 1993 - syn of: Phyllidia guamensis (D.J. Brunckhorst, 1993) - (PHYLLIDIIDAE)
- guamensis, Chondrothyretes impressa guamensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- guamensis, Siphonaria guamensis J.R.C. Quoy & J.P. Gaimard, 1833 - (SIPHONARIIDAE)
- guamensis, Succinea guamensis Unknown - (SUCCINEIDAE)
- guamensis, Mastonia guamensis S. Kosuge, 1974 - (TRIPHORIDAE)
- guamensis, Ethalia guamensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- guamensis, Rotella guamensis J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Ethalia guamensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- guamensis, Umbonium guamensis S.M. Souverbie, 1878 - syn of: Ethalia guamensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- guamensis montrouzieri, Ethalia guamensis montrouzieri S.M. Souverbie, 1858 - syn of: Ethalia guamensis (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- guamensis sanguinea, Ethalia guamensis sanguinea H.A. Pilsbry, 1905 - syn of: Ethalia sanguinea (H.A. Pilsbry, 1905) - (TROCHIDAE)
- guamensis selenomphala, Ethalia guamensis selenomphala H.A. Pilsbry, 1902 - (TROCHIDAE)
- Guamia, Subgenus Lamprocystis (Guamia) F.C. Baker, 1940 (EUCONULIDAE)
- guana, Cupolaconcha guana R.E. Golding, R. Bieler, T.A. Rawlings & T.M. Collins, 2014 - (VERMETIDAE)
- guanabana, Strioterebrum guanabana A.A. Olsson, 1942 † - (TEREBRIDAE) (FOSSIL)
- guanaboensis, Tetrentodon guanaboensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Guanacastea, Genus Guanacastea Pons, Vicens & Schmidt-Effing, 2016 (RADIOLITIDAE) (FOSSIL)
- guanacastense, Ctenocardia guanacastense L.G. Hertlein & A.M. Strong, 1947 - syn of: Americardia planicostata (W.J. Broderip & G.B. I Sowerby, 1833) - (CARDIIDAE)
- guanacastensias, Trigoniocardia guanacastensias (L.G. Hertlein & A.M. Strong, 1947) - (CARDIIDAE)
- guanacastensis, Trigoniocardia guanacastensis L.G. Hertlein & A.M. Strong, 1947 - syn of: Americardia planicostata (W.J. Broderip & G.B. I Sowerby, 1833) - (CARDIIDAE)
- guanacastensis, Ctenocardia guanacastensis L.G. Hertlein & A.M. Strong, 1947 - syn of: Americardia planicostata (W.J. Broderip & G.B. I Sowerby, 1833) - (CARDIIDAE)
- guanacastensis, Cerithiopsis guanacastensis L.G. Hertlein & A.M. Strong, 1951 - (CERITHIOPSIDAE)
- guanacastensis, Turbonilla guanacastensis L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- guanacoensis, Lithancylus guanacoensis H.A. Leanza, 1970 † - (ANCYLOCERATIDAE) (FOSSIL)
- guanahacabibensis, Conus guanahacabibensis J. Espinosa & J.A. Ortea, 2016 - (CONIDAE)
- guanahacabibes, Isotriphora guanahacabibes E. Rolán & R. Fernández-Garcés, 2008 - (TRIPHORIDAE)
- guanahacahibes, Isotriphora guanahacahibes E. Rolán & R. Fernández-Garcés, 2008 - syn of: Isotriphora guanahacabibes E. Rolán & R. Fernández-Garcés, 2008 - (TRIPHORIDAE)
- guanahaniensis, Mitrella guanahaniensis M.J. Faber, 2004 - (COLUMBELLIDAE)
- guanajaense, Opisthosiphon guanajaense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- guanajatabey, Granulina guanajatabey J. Espinosa & J.A. Ortea, 2003 - (MARGINELLIDAE)
- guanan, Halgerda guanan C.H. Carlson & P.J. Hoff, 1993 - syn of: Halgerda guahan C.H. Carlson & P.J. Hoff, 1993 - (DISCODORIDIDAE)
- guanarensis, Anodontites guanarensis W.B. Marshall, 1927 - (MYCETOPODIDAE)
- guancha, Granulina guancha (A.V.M.D. D'Orbigny, 1840) - (MARGINELLIDAE)
- guancha, Granulina guancha G.W. Chaster, 1896 - syn of: Granulina vanhareni J.J. Van Aartsen, H.P.M.G. Menkhorst & E. Gittenberger, 1984 - (MARGINELLIDAE)
- guancha, Coralliophila guancha C. Smriglio, P. Mariottini & W. Engl, 2003 - (MURICIDAE)
- guancha, Alvania guancha R.G. Moolenbeek & H.J. Hoenselaar, 1989 - (RISSOIDAE)
- guanche, Lautoconus guanche J. Lauer, 1993 - (CONIDAE)
- guanche, Hemicycla guanche A. Mousson, 1872 - syn of: Hemicycla sarcostoma (P.B. Webb & S. Berthelot, 1833) - (HELICIDAE)
- guanche, Neolepton guanche C. Salas & S. Gofas, 1998 - (NEOLEPTONIDAE)
- guanchus, Jujubinus guanchus M. Curini-Galletti, 1985 - (TROCHIDAE)
- guandongensis, Cymbovula guandongensis X.T. Ma, 1997 - syn of: Cuspivolva queenslandica (C.N. Cate, 1974) - (OVULIDAE)
- guanense, Pseudocrioceras guanense Kakabadze & Hoedemaeker, 2004 † - (ANCYLOCERATIDAE) (FOSSIL)
- guanense, Farcimen guanense C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- guanense lagunillense, Farcimen guanense lagunillense C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- guanensis, Micrancilla guanensis J.M. Pacaud, D. Merle & Pons, 2013 † - (ANCILLARIIDAE) (FOSSIL)
- guanensis, Colchidites guanensis Kakabadze & Hoedemaeker, 2004 † - (ANCYLOCERATIDAE) (FOSSIL)
- guanensis, Callistocharis guanensis (A. Garrett, 1872) - (BOTHRIEMBRYONTIDAE)
- guanensis, Zachrysia guanensis (F. Poey, 1858) - (CAMAENIDAE)
- guanensis, Liguus blainianus guanensis M.L. Jaume, 1951 - (ORTHALICIDAE)
- guanensis, Chondrothyretes gundlachi guanensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- guanensis, Microceramus nigropictus guanensis C. de la Torre & P. Bartsch, 2008 - (UROCOPTIDAE)
- guanensis castanea, Zachrysia guanensis castanea C.G. Aguayo & M.L. Jaume, 1954 - (CAMAENIDAE)
- guanensis costulata, Zachrysia guanensis costulata H.A. Pilsbry, 1928 - (CAMAENIDAE)
- guanensis leucozoa, Zachrysia guanensis leucozoa C.G. Aguayo & M.L. Jaume, 1954 - (CAMAENIDAE)
- guangcaoziensis, Beichuania guangcaoziensis H.X. Liu & Gu, 1988 † - (BEICHUANIIDAE) (FOSSIL)
- guangdeense, Pleuronodoceras guangdeense J.K. Zhao & al., 1978 † - (PLEURONODOCERATIDAE) (FOSSIL)
- guangdeense, Lopingoceras guangdeense J.K. Zhao & al., 1978 † - (SPYROCERATIDAE) (FOSSIL)
- guangdongensis, Marathonites guangdongensis F.S. Xu, 1977 † - (ADRIANITIDAE) (FOSSIL)
- guangdongensis, Anadara guangdongensis (F.R. Bernard, Y.Y. Cai & F. Morton, 1993) - (ARCIDAE)
- guangdongensis, Scapharca guangdongensis F.R. Bernard, Y.Y. Cai & F. Morton, 1993 - syn of: Anadara guangdongensis (F.R. Bernard, Y.Y. Cai & F. Morton, 1993) - (ARCIDAE)
- guangdongensis, Sedgwickia guangdongensis Zhang, 1977 † - (GRAMMYSIIDAE) (FOSSIL)
- guangdongensis, Stutchburia guangdongensis Zhang, 1977 † - (KALENTERIDAE) (FOSSIL)
- guangdongensis, Palaeoneilo guangdongensis Zhang & Pojeta, 1986 † - (MALLETIIDAE) (FOSSIL)
- guangdongensis, Abdopus guangdongensis (Z.Z. Dong, 1976) - (OCTOPODIDAE)
- guangdongensis, Meixianites guangdongensis F.S. Xu, 1977 † - (PARACELTITIDAE) (FOSSIL)
- guangdongensis, Pernopecten guangdongensis Zhang, 1977 † - (PERNOPECTINIDAE) (FOSSIL)
- guangdongensis, Ryderia guangdongensis Zhang, 1977 † - (POLIDEVCIIDAE) (FOSSIL)
- guangdongensis, Streblochondria guangdongensis Mou & H.X. Liu, 1993 † - (STREBLOCHONDRIIDAE) (FOSSIL)
- guangdungensis, Sinotaia guangdungensis (W. Kobelt, 1906) - (VIVIPARIDAE)
- Guangxiceltites, Genus Guangxiceltites Brayard & Bucher, 2008 (XENOCELTITIDAE) (FOSSIL)
- Guangxiceras, Genus Guangxiceras Brayard & Bucher, 2008 (FLEMINGITIDAE) (FOSSIL)
- guangxiense, Domatoceras guangxiense J.K. Zhao & al., 1978 † - (GRYPOCERATIDAE) (FOSSIL)
- guangxiense, Pseudogastrioceras guangxiense J.K. Zhao & al., 1978 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- guangxiense, Kashmirites guangxiense Brayard & Bucher, 2008 † - (PRIONITIDAE) (FOSSIL)
- guangxiensis, Neocrimites guangxiensis J.K. Zhao & Liang, 1974 † - (ADRIANITIDAE) (FOSSIL)
- guangxiensis, Agoniatites guangxiensis F.S. Xu, 1977 † - (AGONIATITIDAE) (FOSSIL)
- guangxiensis, Aviculopecten guangxiensis H.X. Liu, 1976 † - (AVICULOPECTINIDAE) (FOSSIL)
- guangxiensis, Xenodiscus guangxiensis F.S. Xu, 1977 † - (MEEKOCERATIDAE) (FOSSIL)
- guangxiensis, Leiodysodonta guangxiensis (Zhang 1977) † - (NUCULIDA (UNASSIGNED)) (FOSSIL)
- guangxiensis, Nuculopsis guangxiensis Yang & al., 2016 † - (NUCULIDAE) (FOSSIL)
- guangxiensis, Palaeostylus guangxiensis Pan & Yu, 1993 † - (PALAEOSTYLIDAE) (FOSSIL)
- guangxiensis, Newellipecten guangxiensis (Zhang 1977) † - (PECTINIDA (UNASSIGNED)) (FOSSIL)
- guangxiensis, Oncomelania hupensis guangxiensis (Y.Y. Liu, 1981) - (POMATIOPSIDAE)
- guangxiensis, Dunbarella guangxiensis Zhang, 1977 † - (PTERINOPECTINIDAE) (FOSSIL)
- guangxinensis, Palaeonarica guangxinensis A. Kaim & A. Nützel, 2010 † - (PALAEONARICIDAE) (FOSSIL)
- guangxingensis, Astartella guangxingensis X.L. Liang, 1980 † - (ASTARTIDAE) (FOSSIL)
- guangxingensis, Towapteria guangxingensis Liang, 1980 † - (BAKEVELLIIDAE) (FOSSIL)
- guangxingensis, Permophorus guangxingensis Liang, 1980 † - (KALENTERIDAE) (FOSSIL)
- guangyuanense, Pentagonoceras guangyuanense J.K. Zhao & al., 1978 † - (PLEURONODOCERATIDAE) (FOSSIL)
- guangyuanense, Pernodoceras guangyuanense J.K. Zhao & al., 1978 † - (PSEUDOTIROLITIDAE) (FOSSIL)
- guangyuanensis, Shangsilites guangyuanensis Sheng, 1989 † - (HUANANOCERATIDAE) (FOSSIL)
- guangyuanensis, Claraia guangyuanensis Li, 1989 † - (PTERINOPECTINIDAE) (FOSSIL)
- Guangyuanoceras, Genus Guangyuanoceras Lai & Zhu, 1986 (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- Guangyuanoceroides, Genus Guangyuanoceroides Lai & Zhu, 1986 (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- guanica, Pteromeris guanica (A.A. Olsson, 1961) - (CARDITIDAE)
- guanicanus, Microceramus guanicanus H.B. Baker, 1941 - (UROCOPTIDAE)
- guanicus, Antillipecten guanicus (C.J. Maury, 1920 †) - (PECTINIDAE) (FOSSIL)
- guanomacha, Granulina guanomacha F. Paetel, 1887 - syn of: Granulina guancha (A.V.M.D. D'Orbigny, 1840) - (MARGINELLIDAE)
- guanshanense, Altudoceras guanshanense Zheng, 1984 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- guanshanensis, Tambanella guanshanensis Y. Fang, 1987 † - (MALLEIDAE) (FOSSIL)
- guantanamense, Farcimen ungula guantanamense C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- guantanamense, Chondropoma marginalbum guantanamense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- guantanamensis, Zachrysia guantanamensis (F. Poey, 1857) - (CAMAENIDAE)
- guantanamensis, Chondropoma chordatum guantanamensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- guantanamensis, Arangia guantanamensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- guantanamera, Volvarina guantanamera J. Espinosa, L. Moro & J.A. Ortea, 2011 - (MARGINELLIDAE)
- guaporensis, Diplodon guaporensis A.A. Bonetto & Tassara, 1987 - (HYRIIDAE)
- guarani, Bulimus guarani D'Orbigny, 1835 - syn of: Bahiensis guarani (A.V.M.D. D'Orbigny, 1835) - (BULIMULIDAE)
- guarani, Helix guarani D'Orbigny, 1835 - syn of: Bahiensis guarani (A.V.M.D. D'Orbigny, 1835) - (HELICIDAE)
- guarani, Pyrgocythara guarani (A.V.M.D. D'Orbigny, 1841) - (MANGELIIDAE)
- guarani, Bahiensis guarani (A.V.M.D. D'Orbigny, 1835) - (ODONTOSTOMIDAE)
- guarani, Pleurotoma guarani D'Orbigny, 1841 - syn of: Pyrgocythara guarani (A.V.M.D. D'Orbigny, 1841) - (TURRIDAE)
- guaraniana, Cerithiopsis guaraniana (A.V.M.D. D'Orbigny, 1841) - (CERITHIOPSIDAE)
- guaraniana, Chilina guaraniana Z.J.A. De Castellanos & F.A.W. Miquel, 1980 - (CHILINIDAE)
- guaraniana, Lucina guaraniana D'Orbigny, 1846 - syn of: Diplodonta guaraniana (A.V.M.D. D'Orbigny, 1846) - (LUCINIDAE)
- guaraniana, Eupera guaraniana C.F. Ituarte, 1994 - (SPHAERIIDAE)
- guaraniana, Diplodonta guaraniana (A.V.M.D. D'Orbigny, 1846) - (UNGULINIDAE)
- guaraniana, Unio guaraniana D'Orbigny, 1835 - syn of: Rhipidodonta hylaea guaranianus (A.V.M.D. D'Orbigny, 1835) - (UNIONIDAE)
- guaranianus, Rhipidodonta hylaea guaranianus (A.V.M.D. D'Orbigny, 1835) - (HYRIIDAE)
- guaranianus fluctiger, Diplodon guaranianus fluctiger I. Lea, 1859. - syn of: Diplodon fluctiger (I. Lea, 1859) - (HYRIIDAE)
- guaranitica, Heleobia guaranitica (A. Doering, 1884) - (COCHLIOPIDAE)
- guaraniticum, Aylacostoma guaraniticum (P.H. Scott, 1953) - (THIARIDAE)
- guarayana, Monocondylaea paraguayana guarayana (A.V.M.D. D'Orbigny, 1835) - (MYCETOPODIDAE)
- guardarioorum, Pyramidella guardarioorum G.T. Poppe, S.P. Tagaro & P. Stahlschmidt, 2015 - (PYRAMIDELLIDAE)
- guardiae, Theba guardiae S.G.A. Jaeckel, 1952 - syn of: Theba pisana (O.F. Müller, 1774) - (HELICIDAE)
- guardiarioorum, Pyramidella guardiarioorum G.T. Poppe, S.P. Tagaro & P. Stahlschmidt, 2015 - (PYRAMIDELLIDAE)
- guarensis, Plekocheilus guarensis F.P. Jousseaume, 1889 - (AMPHIBULIMIDAE)
- guarianus, Unio guarianus I. Lea, 1852 - syn of: Rhipidodonta hylaea guaranianus (A.V.M.D. D'Orbigny, 1835) - (UNIONIDAE)
- guatemalanus, Elliptio guatemalanus E.C. Von Martens, 1900 - syn of: Nephronaias goascoranensis (I. Lea, 1858) - (UNIONIDAE)
- guatemalenis, Planorbis guatemalenis S. Clessin, 1889 - syn of: Helisoma foveale guatemalense (S. Clessin, 1889) - (PLANORBIDAE)
- guatemalense, Helisoma foveale guatemalense (S. Clessin, 1889) - (PLANORBIDAE)
- guatemalense, Leptopeas guatemalense (H. Strebel, 1882) - (SUBULINIDAE)
- guatemalense majus, Leptopeas guatemalense majus (E.C. Von Martens, 1898) - (SUBULINIDAE)
- guatemalensis, Amnicola guatemalensis P.H. Fischer & J.C.H. Crosse, 1891 - syn of: Aroapyrgus guatemalensis (P.H. Fischer & J.C.H. Crosse, 1891) - (AMNICOLIDAE)
- guatemalensis, Pomacea flagellata guatemalensis (E.C. Von Martens, 1899) - (AMPULLARIIDAE)
- guatemalensis, Aroapyrgus guatemalensis (P.H. Fischer & J.C.H. Crosse, 1891) - (COCHLIOPIDAE)
- guatemalensis, Cochliopina guatemalensis (P.M.A. Morelet, 1851) - (COCHLIOPIDAE)
- guatemalensis, Anachis guatemalensis L.A. Reeve, 1859 - syn of: Anachis lentiginosa (R.B. Hinds, 1844) - (COLUMBELLIDAE)
- guatemalensis, Columbella guatemalensis L.A. Reeve, 1859 - syn of: Anachis lentiginosa (R.B. Hinds, 1844) - (COLUMBELLIDAE)
- guatemalensis, Cyrenoida guatemalensis H.A. Pilsbry, 1919 - syn of: Cyrenoida floridana (W.H. Dall, 1896) - (CYRENOIDIDAE)
- guatemalensis, Cyrenoidea guatemalensis H.A. Pilsbry, 1920 - syn of: Cyrenoida floridana (W.H. Dall, 1896) - (CYRENOIDIDAE)
- guatemalensis, Ischnochiton guatemalensis K.H.J. Thiele, 1909 - (ISCHNOCHITONIDAE)
- guatemalensis, Limax guatemalensis J.C.H. Crosse & P.H. Fischer, 1870 - syn of: Deroceras laeve (O.F. Müller, 1774) - (LIMACIDAE)
- guatemalensis, Tomocyclus guatemalensis (L. Pfeiffer, 1851) - (MEGALOMASTOMIDAE)
- guatemalensis, Cyclostoma guatemalensis L. Pfeiffer, 1851 - syn of: Tomocyclus guatemalensis (L. Pfeiffer, 1851) - (POMATIIDAE)
- guatemalensis, Spiraxis guatemalensis J.C.H. Crosse & P.H. Fischer, 1877 - syn of: Lamellaxis guatemalensis (J.C.H. Crosse & P.H. Fischer, 1877) - (SPIRAXIDAE)
- guatemalensis, Streptostyla turgidula guatemalensis P.H. Fischer & J.C.H. Crosse, 1870 - (SPIRAXIDAE)
- guatemalensis, Strobilops strebeli guatemalensis A. Hinkley, 1920 - (STROBILOPSIDAE)
- guatemalensis, Lamellaxis guatemalensis (J.C.H. Crosse & P.H. Fischer, 1877) - (SUBULINIDAE)
- guatemalensis, Succinea guatemalensis P.M.A. Morelet, 1849 - (SUCCINEIDAE)
- guatemalensis, Psorula guatemalensis (C.T. Simpson, 1900) - (UNIONIDAE)
- guatemalensis, Eucalodium decollatum guatemalensis P. Bartsch, 1906 - (UROCOPTIDAE)
- guatemalensis, Coelocentrum pittieri guatemalensis P. Bartsch, 1906 - (UROCOPTIDAE)
- guatemalensis, Valvata guatemalensis P.M.A. Morelet, 1851 - syn of: Cochliopina guatemalensis (P.M.A. Morelet, 1851) - (VALVATIDAE)
- guatemalensis majusculus, Lamellaxis guatemalensis majusculus (E.C. Von Martens, 1898) - (SUBULINIDAE)
- guatemalteca, Thaisella guatemalteca Simone, 2017 - (MURICIDAE)
- guatulcoensis, Cerithiopsis guatulcoensis L.G. Hertlein & A.M. Strong, 1951 - (CERITHIOPSIDAE)
- guatulcoensis, Odostomia guatulcoensis L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- guatulcoensis, Chione guatulcoensis L.G. Hertlein & Strong, 1948 - (VENERIDAE)
- guatybae, Unio guatybae R.I. Johnson, 1971 - syn of: Diplodon expansus (H.C. Küster, 1853) - (UNIONIDAE)
- guauraboense, Chondropoma carenasense guauraboense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- guavarum, Philonesia guavarum H.B. Baker, 1940 - (EUCONULIDAE)
- guayana, Crassispira guayana H.A. Pilsbry & A.A. Olsson, 1941 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- guayanensis, Rhipidodonta guayanensis (F. Haas, 1929) - (HYRIIDAE)
- guayaquilensis, Dolabella guayaquilensis G.B. II Sowerby, 1868 - (APLYSIIDAE)
- guayaquilensis, Alaba guayaquilensis P. Bartsch, 1928 - (LITIOPIDAE)
- guayaquilensis, Olivella guayaquilensis P. Bartsch, 1928 - (OLIVELLIDAE)
- guayaquilensis, Fossarus guayaquilensis P. Bartsch, 1928 - (PLANAXIDAE)
- guayaquilensis, Wayampia guayaquilensis (L. Pfeiffer, 1852) - (SCOLODONTIDAE)
- guayaquilensis, Terebra guayaquilensis (E.A. Smith, 1880) - (TEREBRIDAE)
- guayaquilensis, Myurella guayaquilensis E.A. Smith, 1880 - syn of: Terebra guayaquilensis (E.A. Smith, 1880) - (TEREBRIDAE)
- guayaquilensis, Hemisinus guayaquilensis L.A. Reeve, 1859 - (THIARIDAE)
- guayasensis, Megasurcula guayasensis E.S. Marks, 1951 - (PSEUDOMELATOMIDAE)
- guaymasensis, Lepetodrilus guaymasensis McLean, 1988 - (LEPETODRILIDAE)
- guaymasensis, Nassarius guaymasensis (H.A. Pilsbry & H.N. Lowe, 1932) - (NASSARIIDAE)
- guaymasensis, Semele guaymasensis H.A. Pilsbry & Lowe, 1932 - syn of: Semele hanleyi G.F. Angas, 1879 - (SEMELIDAE)
- guaymasensis, Semele guaymasensis H.A. Pilsbry & H.N. Lowe, 1932 - syn of: Semele hanleyi G.F. Angas, 1879 - (SEMELIDAE)
- guaymasensis, Solecurtus guaymasensis (H.N. Lowe, 1935) - (SOLECURTIDAE)
- guaymasensis, Tellina guaymasensis H.A. Pilsbry & H.N. Lowe, 1932 - (TELLINIDAE)
- guaymasensis, Vitrinella guaymasensis J.W. Durham, 1942 - (TORNIDAE)
- guaymasensis, Allocoryphe guaymasensis (P. Bartsch, 1943) - (UROCOPTIDAE)
- guayosense, Opisthosiphon obtectum guayosense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- guayubinensis, Caribachlamys guayubinensis Waller, 2011 † - (PECTINIDAE) (FOSSIL)
- guayubinica, Anadara guayubinica C.J. Maury, 1917 † - (ARCIDAE) (FOSSIL)
- gubanovi, Helicotoma gubanovi Rohr, 1994 † - syn of: Raphistoma gubanovi (Rohr, 1994 †) - (HELICOTOMIDAE) (FOSSIL)
- gubanovi, Raphistoma gubanovi (Rohr, 1994 †) - (RAPHISTOMATIDAE) (FOSSIL)
- gubanovi, Nanochilina gubanovi Frýda & Blodgett, 2004 † - (SOLENISCIDAE) (FOSSIL)
- gubba, Conus gubba L.C. Kiener, 1848 - syn of: Graphiconus cinereus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- gubbi, Chicocenebra gubbi (L.A. Reeve, 1849) - (MURICIDAE)
- gubbiolii, Calliostoma gubbiolii I. Nofroni, 1984 - (CALLIOSTOMATIDAE)
- gubbiolii, Elachisina gubbiolii E. Rolán & S. Gofas, 2003 - (ELACHISINIDAE)
- gubbiolii, Granulina gubbiolii C. Smriglio & P. Mariottini, 1999 - (MARGINELLIDAE)
- gubbiolii, Chrysallida gubbiolii A. Peñas & E. Rolán, 1998 - (PYRAMIDELLIDAE)
- gubernaculum, Anadara gubernaculum (L.A. Reeve, 1844) - (ARCIDAE)
- gubernaculum, Arca gubernaculum L.A. Reeve, 1844 - syn of: Anadara gubernaculum (L.A. Reeve, 1844) - (ARCIDAE)
- gubernaculum, Scapharca gubernaculum L.A. Reeve, 1844 - syn of: Anadara gubernaculum (L.A. Reeve, 1844) - (ARCIDAE)
- gubernaculum, Beguina gubernaculum (L.A. Reeve, 1843) - (CARDITIDAE)
- gubernaculum, Modiolus gubernaculum (R.W. Dunker, 1856) - (MYTILIDAE)
- gubernaculum, Atrina gubernaculum P.F. Röding, 1798 - syn of: Atrina vexillum (I. von Born, 1778) - (PINNIDAE)
- gubernaculum, Psammotreta gubernaculum (S.C.T. Hanley, 1844) - (TELLINIDAE)
- gubernaculum, Tellina gubernaculum S.C.T. Hanley, 1844 - syn of: Psammotreta gubernaculum (S.C.T. Hanley, 1844) - (TELLINIDAE)
- gubernaculum, Unio gubernaculum L.A. Reeve, 1865 - syn of: Epioblasma torulosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- gubernaculum chalcanthum, Anadara gubernaculum chalcanthum (L.A. Reeve, 1844) - (ARCIDAE)
- gubernator, Pionoconus gubernator (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- gubernatoria, Cerion gubernatoria J.C.H. Crosse, 1869 - (CERIONIDAE)
- gubernatoria, Corbicula gubernatoria T. Prime, 1870 - (CYRENIDAE)
- gubernatoria, Nassa gubernatoria Martin, 1904 † - (MURICIDAE) (FOSSIL)
- gubernatoria, Crenella gubernatoria L.C. Glenn, 1904 † - (MYTILIDAE) (FOSSIL)
- gubernatoria, Psammobia gubernatoria L.C. Glenn, 1904 † - (PSAMMOBIIDAE) (FOSSIL)
- gubernatoria, Tragula gubernatoria Martin, 1904 † - (PYRAMIDELLIDAE) (FOSSIL)
- gubleri, Ptychobellerophon gubleri Delpey, 1941 † - (BELLEROPHONTIDAE) (FOSSIL)
- gubleri, Worthenia gubleri Delpey, 1941 † - (LOPHOSPIRIDAE) (FOSSIL)
- gubleri, Luciella gubleri Delpey, 1941 † - (LUCIELLIDAE) (FOSSIL)
- gubleri, Murchisonia gubleri Delpey, 1941 † - (MURCHISONIIDAE) (FOSSIL)
- gubleri, Hudlestoniella gubleri Delpey, 1941 † - (PSEUDOMELANIIDAE) (FOSSIL)
- gubleri, Soleniscus gubleri Delpey, 1942 † - (SOLENISCIDAE) (FOSSIL)
- gubleri, Trochus gubleri Delpey, 1941 † - (TROCHIDAE) (FOSSIL)
- Gudeella, syn of: Genus Thapsia J.A. Albers, 1860 (UROCYCLIDAE)
- gudei, Corilla gudei E.R. Sykes, 1897 - (CORILLIDAE)
- gudei, Takemasaia gudei (H.A. Pilsbry, 1901) - (HELICARIONIDAE)
- gudei, Perrottetia gudei (H.C. Fulton, 1915) - (STREPTAXIDAE)
- gudeliae, Iniforis gudeliae E. Rolán & R. Fernández-Garcés, 2009 - (TRIPHORIDAE)
- Gudeoconcha, Genus Gudeoconcha T. Iredale, 1944 (HELICARIONIDAE)
- Gudeodiscus, Genus Gudeodiscus B. Pαll-Gergely 2013 (PLECTOPYLIDAE)
- gudexi, Maoricardium gudexi (C.R. Laws, 1933 †) - (CARDIIDAE) (FOSSIL)
- gudexi, Cubitostrea gudexi H.H. Suter, 1917 † - (OSTREIDAE) (FOSSIL)
- gudmunduri, Mya truncata gudmunduri F. Strauch, 1972 † - (MYIDAE) (FOSSIL)
- gudrenae, Taxonia gudrenae Wells, 1986 † - (CERITHIIDAE) (FOSSIL)
- Gudrunella, Genus Gudrunella Nόtzel & Erwin, 2004 (COLLONIIDAE) (FOSSIL)
- Guduguwan, Genus Guduguwan Kruse, 1990 (CIRCOTHECIDAE) (FOSSIL)
- guebhardi, Microbiplices guebhardi (C.H. Oppenheimer, 1907 †) - (AULACOSTEPHANIDAE) (FOSSIL)
- guebhardi, Clausilia guebhardi E. Caziot, 1910 - syn of: Clausilia bidentata crenulata A. Risso, 1826 - (CLAUSILIIDAE)
- guebhardi, Diatinostoma guebhardi (A.E.M. Cossmann, 1905 †) - (EUSTOMATIDAE) (FOSSIL)
- guebhardi, Macularia niciensis guebhardi (E. Caziot, 1903) - (HELICIDAE)
- guebhardi, Radix guebhardi E. Caziot, 1905 - syn of: Radix labiata (E.A. Rossmässler, 1835) - (LYMNAEIDAE)
- guebhardi, Olcostephanus guebhardi Killian 1902 † - (OLCOSTEPHANIDAE) (FOSSIL)
- Guebhardia, Genus Guebhardia Cossmann, 1905 (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- gueichowensis, Myophoriopis gueichowensis Ku, 1957 † - syn of: Costatoria kweichowensis Ku, 1957 † - (MYOPHORICARDIIDAE) (FOSSIL)
- gueinzii, Drymaeus gueinzii L. Pfeiffer, 1857 - (BULIMULIDAE)
- gueinzii, Epiphragmophora gueinzii (L. Pfeiffer, 1856) - (EPIPHRAGMOPHORIDAE)
- guelphensis, Holopea guelphensis Billings, 1865 † - (HOLOPEIDAE) (FOSSIL)
- guelphicus, Loxoplocus guelphicus J.J.F. Whiteaves, 1906 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † - (LOPHOSPIRIDAE) (FOSSIL)
- Guelphinacella, Genus Guelphinacella Peel, 1990 (ARCHINACELLIDAE) (FOSSIL)
- guembeli, Ancyloceras guembeli Oppel, 1865 † - syn of: Protancyloceras guembeli (Oppel, 1865 †) - (ANCYLOCERATIDAE) (FOSSIL)
- guembeli, Genuclymenia guembeli Wedekind, 1908 † - (CYMACLYMENIIDAE) (FOSSIL)
- guembeli, Dimeroceras guembeli (Wedekind, 1908 †) - (DIMEROCERATIDAE) (FOSSIL)
- guembeli, Costatohelix guembeli (Ammon, 1892 †) - (DISCOHELICIDAE) (FOSSIL)
- guembeli, Discohelix guembeli Ammon, 1892 † - syn of: Costatohelix guembeli (Ammon, 1892 †) - (DISCOHELICIDAE) (FOSSIL)
- guembeli, Edmondia guembeli C. Gemmellaro, 1896 † - (EDMONDIIDAE) (FOSSIL)
- guembeli, Enteropleura guembeli Mojsisovics 1874 † - (HALOBIIDAE) (FOSSIL)
- guembeli, Hyattoceras guembeli C. Gemmellaro, 1888 † - (HYATTOCERATIDAE) (FOSSIL)
- guembeli, Nautilus guembeli Mojsisovics, 1873 † - syn of: Grypoceras guembeli (Mojsisovics, 1873 †) - (NAUTILIDAE) (FOSSIL)
- guembeli, Cymaceras guembeli (Oppel †) - (OPPELIIDAE) (FOSSIL)
- guembeli, Protancyloceras guembeli (Oppel, 1865 †) - (PROTANCYLOCERATIDAE) (FOSSIL)
- guembeli, Grypoceras guembeli (Mojsisovics, 1873 †) - (TAINOCERATIDAE) (FOSSIL)
- Guembelites, Genus Guembelites Mojsisovics , 1896 (JUVAVITIDAE) (FOSSIL)
- guenanti, Caloria guenanti (J.J. Risbec, 1928) - (FACELINIDAE)
- guendolenae, Pecten guendolenae J.C. Melvill, 1888 - syn of: Cryptopecten nux (L.A. Reeve, 1853) - (PECTINIDAE)
- guendolinae, Pecten guendolinae J.C. Melvill, 1888 - syn of: Cryptopecten nux (L.A. Reeve, 1853) - (PECTINIDAE)
- guenenakenensis, Catutosphinctes guenenakenensis Parent & al., 2011 † - (ATAXIOCERATIDAE) (FOSSIL)
- guenteri, Melanella guenteri W. Engl, 2004 - (EULIMIDAE)
- guenterti, Megacardita guenterti Pfister & Wegmüller, 1998 † - (CARDITIDAE) (FOSSIL)
- guentheri, Plekocheilus guentheri G.B. Sowerby, 1892 - (AMPHIBULIMIDAE)
- guentheri, Calycidoris guentheri F.D. Abraham, 1876 - (CALYCIDORIDIDAE)
- guentheri, Stilifer guentheri (G.F. Angas, 1877) - (EULIMIDAE)
- guentheri, Eucithara guentheri (G.B. III Sowerby, 1893) - (MANGELIIDAE)
- guepellensis, Pleurotomella guepellensis A.E.M. Cossmann, 1889 † - (RAPHITOMIDAE) (FOSSIL)
- guerangeri, Calycoceras guerangeri (Spath, 1863 †) - (ACANTHOCERATIDAE) (FOSSIL)
- guerangeri, Plionema guerangeri (d'Orbigny) † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- guerangeri, Tectus guerangeri A.V.M.D. D'Orbigny, 1842 † - (TEGULIDAE) (FOSSIL)
- guerangeri, Pterodonta guerangeri A.V.M.D. D'Orbigny, 1843 † - (TYLOSTOMATIDAE) (FOSSIL)
- Guerangeria, Genus Guerangeria Oehlert, 1880 (MODIOMORPHIDAE) (FOSSIL)
- guerboisi, Monacha guerboisi J.R. Bourguignat in É.A.A. Locard, 1894 - syn of: Monacha cartusiana (O.F. Müller, 1774) - (HYGROMIIDAE)
- guercifiana, Xerosecta guercifiana (P.M. Pallary, 1918) - (HYGROMIIDAE)
- guercifiana arbalensis, Xerosecta guercifiana arbalensis P.M. Pallary, 1927 - (HYGROMIIDAE)
- guercifiana outaliana, Xerosecta guercifiana outaliana (P.M. Pallary, 1920) - (HYGROMIIDAE)
- gueretini, Euomphalia gueretini G. Servain - syn of: Euomphalia strigella (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- gueretiniana, Lymnaea gueretiniana (G. Servain, 1881) - (LYMNAEIDAE)
- guerichi, Gonatocyrtoceras guerichi (E.S. Sobolev, 1912 †) - (ACLEISTOCERATIDAE) (FOSSIL)
- guerichi, Acutimitoceras guerichi Frech, 1902 † - syn of: Acutimitoceras subbilobatum (G.G. Münster, 1839 †) - (GATTENDORFIIDAE) (FOSSIL)
- guerichi, Mangelia guerichi F. Kautsky, 1925 † - (MANGELIIDAE) (FOSSIL)
- guerichi, Aganides guerichi Frech, 1902 † - syn of: Acutimitoceras subbilobatum (G.G. Münster, 1839 †) - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- guerichi, Grabinopsis guerichi Krawczynski, 2002 † - (PLAGIOTHYRIDAE) (FOSSIL)
- guerichi, Anisus guerichi (A. Andreae, 1902 †) - (PLANORBIDAE) (FOSSIL)
- guerichi, Poterioceras guerichi E.S. Sobolev, 1912 † - syn of: Gonatocyrtoceras guerichi (E.S. Sobolev, 1912 †) - (POTERIOCERATIDAE) (FOSSIL)
- Guerichina, Genus Guerichina Boucek & Prantl, 1961 (PENEAUIIDAE) (FOSSIL)
- guerini, Dryptus guerini (L. Pfeiffer, 1846) - (AMPHIBULIMIDAE)
- guerini, Bulimus guerini L. Pfeiffer, 1846 - syn of: Dryptus guerini (L. Pfeiffer, 1846) - (BULIMULIDAE)
- guerini, Thysanota guerini (L. Pfeiffer, 1842) - (CHAROPIDAE)
- guerini, Hiatella guerini S.C.T. Hanley, 1843 - syn of: Hiatella arctica (C. Linnaeus, 1767) - (HIATELLIDAE)
- guerini, Neripteron guerini (C.A. Récluz, 1841) - (NERITIDAE)
- guerini, Tricolia guerini J.V. Audouin, 1826 - syn of: Phasianella solida (I. von Born, 1778) - (PHASIANELLIDAE)
- guerini jubens, Dryptus guerini jubens H.B. Preston, 1908 - (AMPHIBULIMIDAE)
- Gueriniana, syn of: Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- gueriniana, Vanikoro gueriniana (C.A. Récluz, 1844) - (VANIKORIDAE)
- guerinianum, Paraspiticeras guerinianum (A.V.M.D. D'Orbigny, 1850 †) - (EMERICICERATIDAE) (FOSSIL)
- guerinianus, Atlantica guerinianus (R.T. Lowe, 1852) - (DISCIDAE)
- guerinianus calathoides, Atlantica guerinianus calathoides (R.T. Lowe, 1863) - (DISCIDAE)
- guerinii, Hiatella guerinii B.C.M. Payraudeau, 1826 - syn of: Coralliophaga lithophagella (J.B.P.A. Lamarck, 1819) - (HIATELLIDAE)
- guerinii, Rissoa guerinii C.A. Récluz, 1843 - (RISSOIDAE)
- guerinii, Coralliophaga guerinii B.C.M. Payraudeau, 1826 - syn of: Coralliophaga lithophagella (J.B.P.A. Lamarck, 1819) - (TRAPEZIDAE)
- guerinii, Truncatella guerinii A. Villa & J. Villa, 1841 - (TRUNCATELLIDAE)
- guerinii bipartita, Rissoa guerinii bipartita P. Dautzenberg - (RISSOIDAE)
- guerinii oagariensis, Truncatella guerinii oagariensis J.T. Kuroda, 1960 - (TRUNCATELLIDAE)
- guernei, Bulla guernei P. Dautzenberg, 1889 - syn of: Roxania pinguicula (G. Seguenza, 1880) - (BULLIDAE)
- guernei, Krachia guernei (P. Dautzenberg & H. Fischer, 1896) - (CERITHIOPSIDAE)
- guernei, Cylindriscala guernei (P. Dautzenberg & M.E.A. de Boury, 1897) - (EPITONIIDAE)
- guernei, Emarginula guernei P. Dautzenberg & H. Fischer, 1896 - (FISSURELLIDAE)
- guernei, Bela guernei P. Dautzenberg, 1891 - syn of: Belomitra quadruplex (R.B. Watson, 1882) - (MANGELIIDAE)
- guernei, Melanopsis guernei Š. Brusina, 1902 † - (MELANOPSIDAE) (FOSSIL)
- guernei, Modulus guernei P. Dautzenberg, 1900 - (MODULIDAE)
- guernei, Nassa guernei É.A.A. Locard, 1886 † - syn of: Tritia cuvierii (B.C.M. Payraudeau, 1826 †) - (NASSARIIDAE) (FOSSIL)
- guernei, Cerithiella guernei P. Dautzenberg & H. Fischer, 1896 - syn of: Krachia guernei (P. Dautzenberg & H. Fischer, 1896) - (NEWTONIELLIDAE)
- guernei, Bulinus guernei P. Dautzenberg, 1890 - (PLANORBIDAE)
- guernei, Turbonilla guernei P. Dautzenberg, 1889 - (PYRAMIDELLIDAE)
- guernei, Rissoa guernei P. Dautzenberg, 1889 - (RISSOIDAE)
- guernei, Roxania guernei P. Dautzenberg, 1889 - syn of: Roxania semilaevis (G. Seguenza, 1880) - (SCAPHANDRIDAE)
- guernei jousseaumei, Pusillina guernei jousseaumei P. Dautzenberg & H. Fischer, 1896 - syn of: Rissoa guernei P. Dautzenberg, 1889 - (RISSOIDAE)
- guernesti, Kalidos guernesti E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- guerrai, Turbonilla guerrai A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- guerrei, Cerithium guerrei Hébert & Eudes-Deslongchamps, 1860 † - syn of: Diatrypesis guerrei (Hébert & Eudes-Deslongchamps, 1860 †) - (CERITHIIDAE) (FOSSIL)
- guerrei, Diatrypesis guerrei (Hébert & Eudes-Deslongchamps, 1860 †) - (METACERITHIIDAE) (FOSSIL)
- guerreiroi, Mitrella guerreiroi E. Rolán, 2002 - (COLUMBELLIDAE)
- guerreroensis, Anachis guerreroensis (A.M. Strong & L.G. Hertlein, 1937) - (COLUMBELLIDAE)
- guerreroi, Dyris guerreroi Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- Guerrina, Subgenus Phenacolimax (Guerrina) N.H. Odhner, 1954 (VITRINIDAE)
- guerrini valida, Truncatella guerrini valida L. Pfeiffer, 1846 - syn of: Truncatella guerinii A. Villa & J. Villa, 1841 - (TRUNCATELLIDAE)
- guerrinii, Bullata guerrinii P.J.S. de Souza & J.A. Coovert, 2001 - (MARGINELLIDAE)
- guerrinii, Bullata guerrinii P.J.S. de Souza & Covert, 2001 - syn of: Bullata guerrinii P.J.S. de Souza & J.A. Coovert, 2001 - (MARGINELLIDAE)
- guerrinii, Cyphoma guerrinii D. Fehse, 2001 - (OVULIDAE)
- guersanti, Otohoplites guersanti (A.V.M.D. D'Orbigny, 1841 †) - (HOPLITIDAE) (FOSSIL)
- guersanti semiglabrus, Otohoplites guersanti semiglabrus T.L. Casey † - (HOPLITIDAE) (FOSSIL)
- guersi, Palliolum guersi Wienrich, 1999 - (PECTINIDAE)
- guersi, Teretia guersi Schnetler, 2005 † - (RAPHITOMIDAE) (FOSSIL)
- guersiana, Xerosecta guersiana P.M. Pallary, 1918 - syn of: Xerosecta guercifiana (P.M. Pallary, 1918) - (HYGROMIIDAE)
- guesi, Tucetona guesi (F.P. Jousseaume, 1895) - (GLYCYMERIDIDAE)
- guesi, Glycymeris guesi F.P. Jousseaume, 1895 - syn of: Tucetona guesi (F.P. Jousseaume, 1895) - (GLYCYMERIDIDAE)
- guesnini, Platyceras guesnini A.H. Clarke, 1908 † - (PLATYCERATIDAE) (FOSSIL)
- guesteriana, Helicophanta guesteriana J.C.H. Crosse, 1868 - (ACAVIDAE)
- guesterianus, Gassiesia guesterianus (J. Gassies, 1866) - (NEOCYCLOTIDAE)
- guestfalicum, Linguatornoceras guestfalicum (Frech, 1897 †) - (TORNOCERATIDAE) (FOSSIL)
- guesti, Calliostoma guesti J.F. Quinn, 1992 - (CALLIOSTOMATIDAE)
- guesti, Bullockus guesti W.G. Lyons & Snyder, 2008 - (FASCIOLARIIDAE)
- guesti, Timbellus guesti (M.G. Harasewych & K.R. Jensen, 1979) - (MURICIDAE)
- guesti, Notocochlis guesti (M.G. Harasewych & K.R. Jensen, 1984) - (NATICIDAE)
- guesti, Alvania guesti M.J. Faber & R.G. Moolenbeek, 1987 - (RISSOIDAE)
- guestieri, Placostylus fibratus guestieri (J. Gassies, 1869) - (BOTHRIEMBRYONTIDAE)
- guestieri, Conus guestieri E.L. Lorois, 1860 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- guestieri, Cythara guestieri S.M. Souverbie in S.M. Souverbie & R.P. Montrouzier, 1872 - syn of: Eucithara novaehollandiae (L.A. Reeve, 1846) - (MANGELIIDAE)
- guestieri alba, Bulimus guestieri alba J.C.H. Crosse, 1894 - syn of: Placostylus fibratus souvillei P.M.A. Morelet, 1857 - (BULIMULIDAE)
- guestieri confusus, Placostylus guestieri confusus H.A. Pilsbry, 1900 - syn of: Placostylus fibratus alexander (J.C.H. Crosse, 1855) - (BOTHRIEMBRYONTIDAE)
- guestieri major, Bulimus guestieri major J. Gassies, 1871 - syn of: Placostylus fibratus souvillei P.M.A. Morelet, 1857 - (BULIMULIDAE)
- Guestieria, Genus Guestieria J.C.H. Crosse, 1872 (SCOLODONTIDAE)
- guestphalica, Mourlonia guestphalica E.F.R.K. Koken, 1889 † - (GOSSELETINIDAE) (FOSSIL)
- Guetara, syn of: Genus Uperotus J.Ι. Guettard, 1770 (TEREDINIDAE)
- Guetera, syn of: Genus Uperotus J.Ι. Guettard, 1770 (TEREDINIDAE)
- guettardi, Holcophylloceras guettardi (Raspail, 1831 †) - (PHYLLOCERATIDAE) (FOSSIL)
- guettardi, Salfeldiella guettardi Raspail, 1831 † - syn of: Holcophylloceras guettardi (Raspail, 1831 †) - (PHYLLOCERATIDAE) (FOSSIL)
- Guettera, syn of: Genus Uperotus J.Ι. Guettard, 1770 (TEREDINIDAE)
- gueuxi, Neocrassina gueuxi (A.V.M.D. D'Orbigny, 1850 †) - (ASTARTIDAE) (FOSSIL)
- guevarriana, Ciliella guevarriana J.R. Bourguignat, 1889 - syn of: Ciliella ciliata (J.D.W. Hartmann, 1821) - (HYGROMIIDAE)
- guexi, Eolytoceras guexi Taylor, 1998 † - (LYTOCERATIDAE) (FOSSIL)
- guexi, Pseudokeyserlingites guexi Bucher, 1989 † - (SIBIRITIDAE) (FOSSIL)
- Guexiceras, Genus Guexiceras Taylor , 1998 (ARIETITIDAE) (FOSSIL)
- Guexites, Genus Guexites Bucher , 1992 (BEYRICHITIDAE) (FOSSIL)
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