- grebenianus, Costidiscus grebenianus (Tietze, 1872 †) - (MACROSCAPHITIDAE) (FOSSIL)
- grebenkensis, Corbicula grebenkensis Devjatilova, 1980 † - syn of: Cyrenobatissa sakakibarai (Otatume, 1943 †) - (CYRENIDAE) (FOSSIL)
- grebenkensis, Glycymerita grebenkensis Devjatilova, 1981 † - (GLYCYMERIDIDAE) (FOSSIL)
- grebneffi, Wangacteon grebneffi J.D. Stilwell, 1993 † - (ACTEONIDAE) (FOSSIL)
- grebneffi, Peracle grebneffi Janssen, 2012 † - (PERACLIDAE) (FOSSIL)
- grebnitzkii, Mysella grebnitzkii W.H. Dall, 1916 - (MONTACUTIDAE)
- grebnitzskii, Rochefortia grebnitzskii W.H. Dall, 1916 - syn of: Kellia suborbicularis (G. Montagu, 1803) - (LASAEIDAE)
- grebnitzskii, Mysella grebnitzskii W.H. Dall, 1916 - syn of: Mysella grebnitzkii W.H. Dall, 1916 - (MONTACUTIDAE)
- grecei, Tympanotonos grecei (Vinassa †) - (POTAMIDIDAE) (FOSSIL)
- greci, Mitromorpha greci R.A. Philippi, 1844 - syn of: Mitromorpha olivoidea (F.J. Cantraine, 1835) - (MITROMORPHIDAE)
- grecoi, Lioceratoides grecoi (Fucini, 1901 †) - (HILDOCERATIDAE) (FOSSIL)
- greda, Caryocorbula greda A.A. Olsson, 1928 † - (CORBULIDAE) (FOSSIL)
- gredleri, Euphaedusa gredleri H. Nordsieck, 1998 - (CLAUSILIIDAE)
- gredleri, Macrogastra densestriata gredleri H. Nordsieck, 1993 - (CLAUSILIIDAE)
- gredleri, Dalfreddia porroi gredleri C.A. Westerlund, 1879 - (COCHLOSTOMATIDAE)
- gredleri, Pearsonia gredleri T.C. Yen, 1939 - (CYCLOPHORIDAE)
- gredleri, Planorbis gredleri P.V. Gredler, 1859 - syn of: Gyraulus acronicus (A.E.J. Férussac, 1807) - (PLANORBIDAE)
- gredleri, Planorbarius gredleri S. Clessin, 1887 - syn of: Planorbarius corneus (C. Linnaeus, 1758) - (PLANORBIDAE)
- gredleri, Gyraulus gredleri P.V. Gredler, 1859 - syn of: Gyraulus acronicus (A.E.J. Férussac, 1807) - (PLANORBIDAE)
- gredleri, Pupilla gredleri S. Clessin, 1872 - syn of: Columella columella (G. Von Martens, 1830) - (PUPILLIDAE)
- gredleri, Semisulcospira gredleri (O. Böttger, 1886) - (SEMISULCOSPIRIDAE)
- gredleri, Columella gredleri S. Clessin, 1872 - syn of: Columella columella (G. Von Martens, 1830) - (VERTIGINIDAE)
- gredleri borealis, Gyraulus gredleri borealis S.L. Lovén in C.A. Westerlund, 1875 - syn of: Anisus borealis (S.L. Lovén in C.A. Westerlund, 1875) - (PLANORBIDAE)
- gredleriana, Chondrina multidentata gredleriana S. Clessin, 1887 - (CHONDRINIDAE)
- Gredleriella, syn of: Genus Boysidia C.M.F. Ancey, 1881 (HYPSELOSTOMATIDAE)
- greeffeanus, Unio greeffeanus H.F.A. von Ihering, 1893 - syn of: Diplodon expansus (H.C. Küster, 1853) - (UNIONIDAE)
- greeffei, Tapes greeffei R.W. Dunker, 1877 - syn of: Paphia vernicosa (A.A. Gould, 1861) - (VENERIDAE)
- greeffi, Opeas greeffi S. Panelius, 1958 - syn of: Opeas hannensis (P.C.A.S.L. Rang, 1831) - (SUBULINIDAE)
- greefianus, Diplodon greefianus C.T. Simpson, 1900 - syn of: Diplodon expansus (H.C. Küster, 1853) - (HYRIIDAE)
- greegori, Ovatipsa coloba greegori (J. Ford, 1893) - (CYPRAEIDAE)
- greeleyi, Montereina greeleyi (F.M. MacFarland, 1909) - (DISCODORIDIDAE)
- greeleyi, Crassispira greeleyi (W.H. Dall, 1901) - (PSEUDOMELATOMIDAE)
- greelyi, Winslowoceras greelyi Nassichuk, 1975 † - (WELLERITIDAE) (FOSSIL)
- greenamyeri, Doto greenamyeri Shipman & T.M. Gosliner, 2015 - (DOTIDAE)
- greenbergae, Phenacovolva greenbergae C.N. Cate, 1974 - syn of: Quasisimnia hirasei (H.A. Pilsbry, 1913) - (OVULIDAE)
- greencastlensis, Goniatites greencastlensis Miller & Gurley, 1896 † - (GONIATITIDAE) (FOSSIL)
- greenei, Bisatoceras greenei Miller & Owen, 1939 † - (BISATOCERATIDAE) (FOSSIL)
- greenei, Cantabricanites greenei (Miller, 1892 †) - (PROLECANITIDAE) (FOSSIL)
- greenei, Euloxoceras greenei Miller & al., 1933 † - (SPYROCERATIDAE) (FOSSIL)
- greenei praecursor, Euloxoceras greenei praecursor W.J. Gordon, 1964 † - (SPYROCERATIDAE) (FOSSIL)
- greenfieldi, Opisthosiphon greenfieldi C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- greenfieldi, Chondropoma greenfieldi C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- greenfieldi, Torrecoptis occulta greenfieldi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- greenfieldi, Macroceramus vanattai greenfieldi C. de la Torre & P. Bartsch, 2008 - (UROCOPTIDAE)
- greenhilli, Pallidelix greenhilli (J.C. Cox, 1866) - (CAMAENIDAE)
- greenhornensis, Puebloites greenhornensis Cobban & P.H. Scott, 1973 † - (HAMITIDAE) (FOSSIL)
- greenhornensis, Yezoites delicatulus greenhornensis Cobban, 1983 † - (SCAPHITIDAE) (FOSSIL)
- greenhoughi, Trachycardium greenhoughi d'Archiac & Haime, 1853 † - (CARDIIDAE) (FOSSIL)
- greeni, Toxoceratoides greeni C.E. Murphy, 1975 † - (ANCYLOCERATIDAE) (FOSSIL)
- greeni, Albinaria greeni J.R. le B. Tomlin, 1935 - (CLAUSILIIDAE)
- greeni, Consobrinella greeni J. Gründel & al., 2011 † - (CYLINDROBULLINIDAE) (FOSSIL)
- greeni, Aphelodoris greeni R.F. Burn, 1966 - (DORIDIDAE)
- greeni, Gyrodes greeni C.E. Murphy & P.U. Rodda, 1960 † - (NATICIDAE) (FOSSIL)
- greeni, Conradostrea greeni Ward, 1992 † - (OSTREIDAE) (FOSSIL)
- greeni, Euloxoceras greeni Dunbar & Condra, 1933 † - (SPYROCERATIDAE) (FOSSIL)
- greeni, Macrocallista greeni Ward & B.W. Blackwelder, 1987 † - (VENERIDAE) (FOSSIL)
- greenii, Cerithium greenii Adams, 1839 - syn of: Cerithiopsis greenii (Adams, 1839) - (CERITHIIDAE)
- greenii, Cerithiopsis greenii (Adams, 1839) - (CERITHIOPSIDAE)
- greenii, Cardiomya greenii E.A. Smith, 1889 - syn of: Cardiomya striata (J.G. Jeffreys, 1876) - (CUSPIDARIIDAE)
- greenii, Ptychobranchus greenii (T.A. Conrad, 1834) - (UNIONIDAE)
- greenlandica, Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica, Epitonium greenlandica G. Perry, 1811 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica, Oenopota greenlandica (L.A. Reeve, 1846) - (MANGELIIDAE)
- greenlandica, Neocraspedites greenlandica (E. Donovan, 1953 †) - (POLYPTYCHITIDAE) (FOSSIL)
- greenlandica, Arctinula greenlandica G.B. II Sowerby, 1842 - syn of: Similipecten greenlandicus (G.B. II Sowerby, 1842) - (PROPEAMUSSIIDAE)
- greenlandica, Yochelcionella greenlandica Atkins & Peel, 2004 † - (YOCHELCIONELLIDAE) (FOSSIL)
- greenlandica angustior, Epitonium greenlandica angustior W. Kobelt, 1888 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica angustioris, Epitonium greenlandica angustioris W. Kobelt, 1888 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica lovenii, Boreoscala greenlandica lovenii (A. Adams, 1856) - (EPITONIIDAE)
- greenlandica major, Epitonium greenlandica major W. Kobelt, 1888 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica norvegicum, Boreoscala greenlandica norvegicum W.J. Clench & H. Turner, 1952 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandica ornata, Epitonium greenlandica ornata W. Kobelt, 1888 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandicum, Ophiceras greenlandicum (Spath, 1930 †) - (DIENEROCERATIDAE) (FOSSIL)
- greenlandicum, Epitonium greenlandicum G. Perry, 1811 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandicum crebricostata, Epitonium greenlandicum crebricostata G.O. Sars, 1878 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandicum japonicum, Epitonium greenlandicum japonicum T. Shikama, 1962 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandicum norvegicum, Epitonium greenlandicum norvegicum W.J. Clench & H. Turner, 1952 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- greenlandicus, Pecten greenlandicus G.B. II Sowerby, 1842 - syn of: Similipecten greenlandicus (G.B. II Sowerby, 1842) - (PECTINIDAE)
- greenlandicus, Similipecten greenlandicus (G.B. II Sowerby, 1842) - (PROPEAMUSSIIDAE)
- Greenlandoceras, Genus Greenlandoceras Shimizu & Obata, 1935 † (GREENLANDOCERATIDAE) (FOSSIL)
- GREENLANDOCERATIDAE Shimizu & Obata, 1935 † - Family (CEPHALOPODA-ORTHOCERATOIDEA [Subclass]-ORTHOCERIDA [Order]) (FOSSIL)
- greenlawi, Gadila greenlawi (J. Henderson, 1920) - (GADILIDAE)
- greenoughi, Acanthocardia greenoughi (d'Archiac & Haime †) - (CARDIIDAE) (FOSSIL)
- greensboroense, Caecum greensboroense Martin, 1904 † - (CAECIDAE) (FOSSIL)
- greensboroense, Teinostoma greensboroense Martin, 1904 † - (TORNIDAE) (FOSSIL)
- greensboroensis, Crepipatella greensboroensis Martin, 1904 † - (CALYPTRAEIDAE) (FOSSIL)
- greensboroensis, Cylichna greensboroensis Martin, 1904 † - (CYLICHNIDAE) (FOSSIL)
- greensboroensis, Nassa greensboroensis Martin, 1904 † - (MURICIDAE) (FOSSIL)
- greenwayae, Oliva greenwayae W.J. Clench, 1937 - syn of: Oliva bifasciata greenwayae W.J. Clench, 1937 - (OLIVIDAE)
- greenwayae, Oliva bifasciata greenwayae W.J. Clench, 1937 - (OLIVIDAE)
- greenwayi, Cerion greenwayi W.J. Clench, 1934 - (CERIONIDAE)
- greenwayi, Eutrochatella greenwayi W.J. Clench, 1933 - (HELICINIDAE)
- greenwayi, Gulella greenwayi B. Verdcourt - (STREPTAXIDAE)
- greenwoodi, Rhytida greenwoodi (J.E. Gray, 1850) - (RHYTIDIDAE)
- greenwoodi stephenensis, Rhytida greenwoodi stephenensis A.W.B. Powell, 1930 - syn of: Rhytida stephenensis A.W.B. Powell, 1930 - (RHYTIDIDAE)
- greenwoodi webbi, Rhytida greenwoodi webbi A.W.B. Powell, 1949 - (RHYTIDIDAE)
- greenwoodiana, Blandia greenwoodiana E. Chitty, 1857 - (HELICINIDAE)
- greenwoodii, Ficus greenwoodii Sowerby, 1825 † - (FICIDAE) (FOSSIL)
- Greenwoodoconcha, Subgenus Microcystis (Greenwoodoconcha) H.B. Preston, 1913 (EUCONULIDAE)
- greerensis, Limipecten greerensis Busanus & Hoare, 1991 † - (AVICULOPECTINIDAE) (FOSSIL)
- greeri, Succinea greeri G.W. Tryon, 1866 - (SUCCINEIDAE)
- greerii, Succinea greerii G.W. Tryon, 1866 - syn of: Succinea greeri G.W. Tryon, 1866 - (SUCCINEIDAE)
- gregale, Acrosphaerorthoceras gregale Ristedt, 1968 † - (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- gregalis, Akrosphaerorthoceras gregalis Ristedt, 1968 † - (SPHAERORTHOCERATIDAE) (FOSSIL)
- gregalis, Anodonta gregalis H. Drouët, 1893 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- gregareum, Actinostreon gregareum (J. de C. Sowerby, 1816 †) - (ARCTOSTREIDAE) (FOSSIL)
- gregaria, Estea gregaria C.F. Laseron, 1950 - syn of: Pseudopisinna gregaria (C.F. Laseron, 1950) - (ANABATHRIDAE)
- gregaria, Austroaporrhais gregaria (R.O. Wilckens, 1905 †) - (APORRHAIDAE) (FOSSIL)
- gregaria, Pseudocardia gregaria (F.B. Meek & Hayden, 1856 †) - (CARDITIDAE) (FOSSIL)
- gregaria, Socienna gregaria (C.F. Laseron, 1951) - (CERITHIOPSIDAE)
- gregaria, Horologica gregaria A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- gregaria, Kaliella gregaria (S. Tillier & P. Bouchet, 1988) - (CHRONIDAE)
- gregaria, Pseudopisinna gregaria (C.F. Laseron, 1950) - (CINGULOPSIDAE)
- gregaria, Coelostylina gregaria (Schlotheim, 1822 †) - (COELOSTYLINIDAE) (FOSSIL)
- gregaria, Filosina gregaria T.L. Casey † - (CYRENIDAE) (FOSSIL)
- gregaria, Libera gregaria A. Garrett, 1884 - (ENDODONTIDAE)
- gregaria, Ephippodonta gregaria S. Gofas, 1991 - (GALEOMMATIDAE)
- gregaria, Prososthenia gregaria (A. Fuchs, 1877 †) - (HYDROBIIDAE) (FOSSIL)
- gregaria, Hydrobia gregaria (Schlotheim, 1820 †) - (HYDROBIIDAE) (FOSSIL)
- gregaria, Monacha gregaria (E.A. Rossmässler, 1839) - (HYGROMIIDAE)
- gregaria, Loxonema gregaria Knod, 1908 † - (LOXONEMATIDAE) (FOSSIL)
- gregaria, Mysella gregaria L. Rotvit, C.F. Lützen, A. Jespersen & A. Fox, 2007 - (MONTACUTIDAE)
- gregaria, Mesocoelia gregaria Ruedemann, 1916 † - (MURCHISONIIDAE) (FOSSIL)
- gregaria, Pseudocorbula gregaria (Münster, 1838 †) - (MYOPHORICARDIIDAE) (FOSSIL)
- gregaria, Nassa gregaria A.W. Grabau & S.G. King, 1928 - syn of: Nassarius gregarius (A.W. Grabau & S.G. King, 1928) - (NASSARIIDAE)
- gregaria, Tricolia gregaria C.F. Laseron, 1955 - syn of: Tricolia variabilis (W.H. Pease, 1861) - (PHASIANELLIDAE)
- gregaria, Praenatica gregaria J. Perner, 1903 † - syn of: Praenatica naticoides (F.A. Roemer, 1852 †) - (PLATYCERATIDAE) (FOSSIL)
- gregaria, Pseudococculina gregaria B.A. Marshall, 1986 - (PSEUDOCOCCULINIDAE)
- gregaria, Gymnobela gregaria E.R. Sykes, 1906 - syn of: Gymnobela leptoglypta (P. Dautzenberg & H. Fischer, 1896) - (RAPHITOMIDAE)
- gregaria, Straparollina gregaria (Billings, 1859 †) - (STRAPAROLLINIDAE) (FOSSIL)
- gregaria, Scalaspira gregaria (R.A. Philippi, 1845 †) - (STREPSIDURIDAE) (FOSSIL)
- gregaria, Hemithersitea gregaria (Antoine, 1943 †) - (THERSITEIDAE) (FOSSIL)
- gregaria, Valvata gregaria Bukowski, 1896 † - (VALVATIDAE) (FOSSIL)
- gregaria, Venus gregaria F. McCoy, 1847 † - syn of: Pleurikodonta gemma (J.B.M. Dana, 1847 †) - (VENERIDAE) (FOSSIL)
- gregaria rugifera, Pseudopisinna gregaria rugifera W.F. Ponder & E.K. Yoo, 1980 - (CINGULOPSIDAE)
- Gregariella, Genus Gregariella T.A. de M. Monterosato, 1884 (MYTILIDAE)
- gregarium, Dawsonoceras gregarium Kröger & al., 2011 † - (DAWSONOCERATIDAE) (FOSSIL)
- gregarium, Ukhtoceras gregarium P.A. Zhuravleva, 1972 † - syn of: Ukhtoceras uchtense (Holzapfel, 1899 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- gregarium, Foordiceras gregarium Miller, 1945 † - syn of: Pleuronautilus gregarius Miller, 1945 † - (KONINCKIOCERATIDAE) (FOSSIL)
- gregarium, Loxonema gregarium (de Sowerby & Murchison, 1839 †) - (LOXONEMATIDAE) (FOSSIL)
- gregarium, Dendropoma gregarium J.A. Hadfield & E.A. Kay, 1972 - (VERMETIDAE)
- gregarius, Eodon gregarius (J.W. Hall, 1877 †) - (EODONIDAE) (FOSSIL)
- gregarius, Microdon gregarius J.W. Hall, 1877 † - syn of: Eodon gregarius (J.W. Hall, 1877 †) - (EODONIDAE) (FOSSIL)
- gregarius, Permophorus gregarius (Etheridge, 1900 †) - (KALENTERIDAE) (FOSSIL)
- gregarius, Parimalleus gregarius T. Iredale, 1939 - syn of: Malleus legumen L.A. Reeve, 1858 - (MALLEIDAE)
- gregarius, Nassarius gregarius (A.W. Grabau & S.G. King, 1928) - (NASSARIIDAE)
- gregarius, Theodoxus gregarius (Thomä, 1845 †) - (NERITIDAE) (FOSSIL)
- gregarius, Plicatostylus gregarius (Lupher & A. Packard, 1929 †) - (PLICATOSTYLIDAE) (FOSSIL)
- gregarius, Pleuronautilus gregarius Miller, 1945 † - (TAINOCERATIDAE) (FOSSIL)
- gregarius, Unionites gregarius F.A. von Quenstedt, 1858 † - (TRIGONODIDAE) (FOSSIL)
- gregarius, Vermetus gregarius T.A. de M. Monterosato, 1878 - syn of: Vermetus triquetrus Ant. Bivona-Bernardi, 1832 - (VERMETIDAE)
- gregarius solitarius, Vermetus gregarius solitarius T.A. de M. Monterosato, 1892 - syn of: Petaloconchus glomeratus (C. Linnaeus, 1758) - (VERMETIDAE)
- gregaroides, Pseudocorbula gregaroides R.A. Philippi, 1898 † - (MYOPHORICARDIIDAE) (FOSSIL)
- gregata, Pteria gregata (L.A. Reeve, 1857) - (PTERIIDAE)
- gregata, Fistulana gregata J.B.P.A. Lamarck, 1801 - syn of: Uperotus clava (J.F. Gmelin, 1791) - (TEREDINIDAE)
- Greggelix, Genus Greggelix W.B. Miller, 1972 (HELMINTHOGLYPTIDAE)
- greggi, Lyogyrus greggi H.A. Pilsbry, 1935 - (AMNICOLIDAE)
- greggi, Cahuillus greggi (W.B. Miller, 1981) - (CEPOLIDAE)
- greggi, Kamupena greggi Speden, 1962 † - (EOTOMARIIDAE) (FOSSIL)
- greggi, Linsleyella greggi (Rohr, 1980 †) - (EUOMPHALIDAE) (FOSSIL)
- greggi, Ellisella greggi Rohr, 1980 † - syn of: Linsleyella greggi (Rohr, 1980 †) - (EUOMPHALINA (unassigned)) (FOSSIL)
- greggi, Eremarionta greggi W.B. Miller, 1981 - (HELMINTHOGLYPTIDAE)
- greggi, Colligyrus greggi (H.A. Pilsbry, 1935) - (HYDROBIIDAE)
- greggi, Dhondtichlamys greggi (G.F. Harris, 1897 †) - (PECTINIDAE) (FOSSIL)
- greggi, Zeacolpus greggi J. Marwick, 1971 † - (TURRITELLIDAE) (FOSSIL)
- greggi, Haplocion greggi (M. Drake, 1951) - (UROCOPTIDAE)
- greggi, Westonoceras greggi Roy, 1931 † - (WESTONOCERATIDAE) (FOSSIL)
- greggiana, Baluchicardia greggiana (W.H. Dall, 1903 †) - (CARDITIDAE) (FOSSIL)
- Greggiella, Subgenus Haplotrema (Greggiella) F.C. Baker, 1931 (HAPLOTREMATIDAE)
- greggiensis, Cerithiopsis greggiensis T.H. Aldrich, 1911 † - (CERITHIOPSIDAE) (FOSSIL)
- gregoi, Bythinella gregoi P. Glöer & Z. Eröss, 2015 - (BYTHINELLIDAE)
- gregoi, Miraphaedusa gregoi Hunyadi & Szekeres, 2016 - (CLAUSILIIDAE)
- gregoi, Montenegrina rugilabris gregoi Z. Fehér & M. Szekeres, 2016 - (CLAUSILIIDAE)
- Gregoia, Genus Gregoia Fehse, 2015 (TRIVIIDAE)
- gregoriana, Exiligada gregoriana F. Criscione, A. Law & F. Köhler, 2012 - (CAMAENIDAE)
- gregoriana, Plagioptycha gregoriana W.H. Dall, 1905 - (CEPOLIDAE)
- gregoriana, Tricula gregoriana Surya Rao, 1923 - (POMATIOPSIDAE)
- gregoriana expansa, Tricula gregoriana expansa Surya Rao, 1923 - (POMATIOPSIDAE)
- gregorii, Unio gregorii W. Kobelt, 1912 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- gregorioi, Corbula gregorioi A.E.M. Cossmann, 1894 † - (CORBULIDAE) (FOSSIL)
- gregorioi, Eopustularia gregorioi (Schilder, 1929 †) - (CYPRAEIDAE) (FOSSIL)
- Gregorioiscala, Genus Gregorioiscala A.E.M. Cossmann, 1912 (EPITONIIDAE)
- Gregorioscala, syn of: Genus Gregorioiscala A.E.M. Cossmann, 1912 (EPITONIIDAE)
- gregorius, Glossodoris gregorius W.B. Rudman, 1986 - (CHROMODORIDIDAE)
- gregorsoni, Endothyrella gregorsoni (G.P.L.K. Gude, 1915) - (PLECTOPYLIDAE)
- Gregoryceras, Genus Gregoryceras Bert & Enay, 2004 † (ASPIDOCERATIDAE) (FOSSIL)
- gregoryensis, Baculites gregoryensis Cobban, 1965 † - (BACULITIDAE) (FOSSIL)
- gregoryi, Amastra cyclostoma gregoryi C.M. Cooke, 1933 - (AMASTRIDAE)
- gregoryi, Angolaites gregoryi (Spath, 1922 †) - (BRANCOCERATIDAE) (FOSSIL)
- gregoryi, Pseudocucullaea gregoryi Olsson 1934 † - (CUCULLAEIDAE) (FOSSIL)
- gregoryi, Xenoceltites gregoryi Spath, 1934 † - syn of: Xenoceltites subevolutus (Spath, 1930 †) - (KASHMIRITIDAE) (FOSSIL)
- gregoryi, Anguipecten gregoryi W.H. Dall & al., 1938 - (PECTINIDAE)
- gregoryi, Teredora gregoryi W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Teredora princesae (P.B. Sivickis, 1928) - (TEREDINIDAE)
- gregsoni, Phos gregsoni R. Tate, 1888 † - (NASSARIIDAE) (FOSSIL)
- Greilada, Genus Greilada L.S.R. Bergh, 1894 (POLYCERIDAE)
- greixensis, Clausilia greixensis P. Fagot, 1905 - syn of: Clausilia bidentata abietina (D. Dupuy, 1850) - (CLAUSILIIDAE)
- grelloisi, Strigatella grelloisi C.A. Récluz, 1853 - syn of: Strigatella pellisserpentis L.A. Reeve, 1844 - (MITRIDAE)
- grelloisianus, Unio grelloisianus J.R. Bourguignat, 1856 - syn of: Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- gremblichi, Patella gremblichi Wohrmann, 1893 † - (PATELLIDAE) (FOSSIL)
- gremechaensis, Leptoptygma gremechaensis Mazaev, 2015 † - (SOLENISCIDAE) (FOSSIL)
- grenadarum, Limopsis grenadarum P.O. Jung, 1971 † - (LIMOPSIDAE) (FOSSIL)
- grenadense, Austrocyclotus grenadense (R.J. Shuttleworth, 1857) - (NEOCYCLOTIDAE)
- grenadensis, Plekocheilus glaber grenadensis R.J.L. Guppy, 1868 - (AMPHIBULIMIDAE)
- grenadensis, Drymaeus grenadensis (L. Pfeiffer, 1848) - (BULIMULIDAE)
- grenadensis, Triphora grenadensis E. Rolán & Y.C. Lee, 2008 - (TRIPHORIDAE)
- grenadinarum, Vaginella grenadinarum P.O. Jung, 1971 † - (CAVOLINIIDAE) (FOSSIL)
- grenadinarum, Sthenorytis grenadinarum P.O. Jung, 1971 † - (EPITONIIDAE) (FOSSIL)
- grenadinarum, Limopsis grenadinarum P.O. Jung, 1971 † - (LIMOPSIDAE) (FOSSIL)
- grenieri, Transovula grenieri Dolin & Aguerre, 2016 † - (OVULIDAE) (FOSSIL)
- grenningi, Bankia grenningi T. Iredale, 1936 - syn of: Bankia australis (W.T. Calman, 1920) - (TEREDINIDAE)
- grenoni, Cosmioconcha grenoni J. Pelorce, 2017 - (COLUMBELLIDAE)
- grenophia, Bathyarca philippiana grenophia (A. Risso, 1826) - (ARCIDAE)
- grenvillei, Therasia grenvillei (J.W. Brazier, 1876) - (CHAROPIDAE)
- greppii, Cerithiopsis greppii G. Buzzurro & A. Cecalupo, 2005 - (CERITHIOPSIDAE)
- greppini, Nucula greppini G.P. Deshayes, 1858 † - (NUCULIDAE) (FOSSIL)
- greppini, Erymnocerites greppini Jeannet, 1951 † - (PACHYCERATIDAE) (FOSSIL)
- greppini, Reineckeia greppini (Oppel †) - (REINECKEIIDAE) (FOSSIL)
- greppini, Rissoina greppini de Loriol, 1890 † - (RISSOINIDAE) (FOSSIL)
- Gresslya, Genus Gresslya Agassiz, 1843 † (CERATOMYIDAE) (FOSSIL)
- gresslyi, Pseudomelania gresslyi Pictet & Campiche, 1862 † - (PSEUDOMELANIIDAE) (FOSSIL)
- gresslyi, Mariella gresslyi (Pictet & Campiche) † - (TURRILITIDAE) (FOSSIL)
- gretae, Attiliosa gretae E.H. Vokes, 1999 † - (MURICIDAE) (FOSSIL)
- gretschischkini, Pandora gretschischkini Slodkewitsch, 1938 † - (PANDORIDAE) (FOSSIL)
- gretschischkini, Neogenella gretschischkini Slodkewitsch, 1935 † - (VENERIDA (UNASSIGNED)) (FOSSIL)
- gretschischkini, Pitar gretschischkini Slodkewitsch, 1935 † - syn of: Neogenella gretschischkini Slodkewitsch, 1935 † - (VENERIDAE) (FOSSIL)
- gretschischkini, Yoldia gretschischkini L. Krishtofovich, 1964 † - (YOLDIIDAE) (FOSSIL)
- grevei, Sioliella grevei D. Kadolsky, 1980 † - (COCHLIOPIDAE) (FOSSIL)
- grevei, Xylophaga grevei J. Knudsen, 1961 - (XYLOPHAGAIDAE)
- Greveniella, Genus Greveniella Harzhauser & Kowalke, 2001 † (ELACHISINIDAE) (FOSSIL)
- greveniense, Agapibittium greveniense M. Harzhauser & T. Kowalke, 2001 † - (CERITHIIDAE) (FOSSIL)
- grevilleana, Fadyenia grevilleana E. Chitty, 1857 - (HELICINIDAE)
- grevillei, Acavus superbus grevillei (L. Pfeiffer, 1847) - (ACAVIDAE)
- grevillei, Archachatina marginata grevillei (L. Pfeiffer, 1860) - (ACHATINIDAE)
- grevillei, Lauria grevillei E. Chitty, 1853 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (LAURIIDAE)
- grevillei, Porphyrobaphe grevillei (G.B. Sowerby & L. Pfeiffer, 1876) - (ORTHALICIDAE)
- grevillei, Pupilla grevillei E. Chitty, 1853 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (PUPILLIDAE)
- grewingki, Pseudocadoceras grewingki (Pompeckj, 1900 †) - (CADOCERATIDAE) (FOSSIL)
- grewingki, Glycymeris grewingki W.H. Dall, 1909 - syn of: Glycymeris septentrionalis (A.T. von Middendorff, 1849) - (GLYCYMERIDIDAE)
- grewingki, Temnocheilus grewingki Tschernyschew, 1899 † - (KONINCKIOCERATIDAE) (FOSSIL)
- grewingki, Arenomya grewingki J. Makiyama, 1934 † - (MYIDAE) (FOSSIL)
- grewingki elongata, Arenomya grewingki elongata T. Nagao & Inoue, 1941 † - syn of: Arenomya grewingki nagaoi K. Oyama & A. Mizuno, 1958 † - (MYIDAE) (FOSSIL)
- grewingki nagaoi, Arenomya grewingki nagaoi K. Oyama & A. Mizuno, 1958 † - (MYIDAE) (FOSSIL)
- grewingkii, Protothaca grewingkii W.H. Dall, 1904 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- greyana, Tornus greyana (J.T.C. Ratzeburg, 1848) - (TORNIDAE)
- greyana, Geomelania greyana C.B. Adams, 1850 - (TRUNCATELLIDAE)
- greyi, Achatina greyi S.I. Da Costa, 1907 - (ACHATINIDAE)
- greyi, Titanocardium greyi (F.W. Hutton, 1873 †) - (CARDIIDAE) (FOSSIL)
- greyi, Dosinia greyi C.A. von Zittel, 1865 - (VENERIDAE)
- gribinguiensis, Lanistes gribinguiensis J. Germain, 1905 - syn of: Lanistes nsendweensis C. Dupuis & S. Putzeys, 1902 - (AMPULLARIIDAE)
- griegi, Cingula griegi (H.B.S. Friele, 1879) - (RISSOIDAE)
- griegi, Tritonia griegi N.H. Odhner, 1922 - (TRITONIIDAE)
- griegi azorensis, Cingula griegi azorensis F. Nordsieck, 1972 - (RISSOIDAE)
- griesbachi, Procladiscites griesbachi (Mojsisovic, 1882 †) - (CLADISCITIDAE) (FOSSIL)
- griesbachi, Proclydonautilus griesbachi (Mojsisovics †) - (CLYDONAUTILIDAE) (FOSSIL)
- griesbachi, Coelostylina griesbachi E.A.L. Kittl, 1894 † - (COELOSTYLINIDAE) (FOSSIL)
- griesbachi, Myophorella griesbachi (J. Lycett, 1863 †) - (MYOPHORELLIDAE) (FOSSIL)
- griesbachi, Pseudomonotis griesbachi Bittner, 1899 † - syn of: Claraia griesbachi (Bittner, 1899 †) - (PSEUDOMONOTIDAE) (FOSSIL)
- griesbachi, Claraia griesbachi (Bittner, 1899 †) - (PTERINOPECTINIDAE) (FOSSIL)
- griesbachi, Auroradiolites griesbachi (J.H.F. Douvillé, 1926 †) - (RADIOLITIDAE) (FOSSIL)
- griesbachi, Sphaerulites griesbachi J.H.F. Douvillé, 1926 † - syn of: Auroradiolites griesbachi (J.H.F. Douvillé, 1926 †) - (RADIOLITIDAE) (FOSSIL)
- griesbachi, Unionites griesbachi Bittner, 1899 † - (TRIGONODIDAE) (FOSSIL)
- Griesbachites, Genus Griesbachites Mojsisovics , 1896 † (JUVAVITIDAE) (FOSSIL)
- griesensis, Diplodonta griesensis Effinger, 1938 † - syn of: Felaniella sertunayensis (Slodkewitsch, 1938 ex Kogan, MS †) - (UNGULINIDAE) (FOSSIL)
- griffini, Opisthoptera griffini Hussey, 1926 † - (AMBONYCHIIDAE) (FOSSIL)
- griffini, Drymaeus griffini F. Haas, 1955 - (BULIMULIDAE)
- griffini, Fulguropsis griffini E.J. Petuch, 1994 † - (BUSYCONIDAE) (FOSSIL)
- griffini, Cerithium griffini E.J. Petuch, 1994 † - (CERITHIIDAE) (FOSSIL)
- griffini, Cariboconus griffini E.J. Petuch, 1990 - syn of: Dauciconus daucus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- griffini, Siphocypraea griffini E.J. Petuch, 1991 † - (CYPRAEIDAE) (FOSSIL)
- griffini, Echinofulgur griffini E.J. Petuch, 1994 † - (ECHINOFULGURIDAE) (FOSSIL)
- griffini, Striaticostatum griffini D.T. Dockery, 1993 † - (EPITONIIDAE) (FOSSIL)
- griffini, Liochlamys griffini E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- griffini, Melongena griffini E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- griffini, Vokesinotus griffini E.J. Petuch, 1991 † - (MURICIDAE) (FOSSIL)
- griffini, Lindoliva griffini E.J. Petuch, 1988 † - syn of: Lindoliva diegelae E.J. Petuch, 1988 † - (OLIVIDAE) (FOSSIL)
- griffini, Hystrivasum griffini E.J. Petuch, 1994 † - (TURBINELLIDAE) (FOSSIL)
- griffini, Scaphella griffini E.J. Petuch, 1994 † - (VOLUTIDAE) (FOSSIL)
- griffinorum, Helicotoma griffinorum Rohr, 1980 † - (HELICOTOMIDAE) (FOSSIL)
- griffithi, Trachypleuraspidites griffithi Diener, 1906 † - (DISTICHITIDAE) (FOSSIL)
- griffithi, Morania griffithi (J. Donald, 1899 †) - (MURCHISONIIDAE) (FOSSIL)
- griffithi, Patagiosites griffithi (Sharpe) † - (PACHYDISCIDAE) (FOSSIL)
- griffithi, Euglandina griffithi L. Pfeiffer, 1845 - syn of: Varicellaria griffithii (C.B. Adams, 1845) - (SPIRAXIDAE)
- griffithiana, Gyrotoma griffithiana I. Lea, 1860 - (PLEUROCERIDAE)
- griffithiana, Parachondria griffithiana (C.B. Adams, 1850) - (POMATIIDAE)
- griffithianus, Unio griffithianus I. Lea, 1834 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- griffithii, Clavatula griffithii J.E. Gray, 1834 - syn of: Ptychobela griffithii (J.E. Gray, 1834) - (CLAVATULIDAE)
- griffithii, Drillia griffithii (L.A. Reeve, 1843) - (DRILLIIDAE)
- griffithii, Tropidostropha griffithii F. McCoy, 1844 † - syn of: Tropidostropha punctata Longstaff, 1912 † - (GOSSELETINIDAE) (FOSSIL)
- griffithii, Varicellaria griffithii (C.B. Adams, 1845) - (OLEACINIDAE)
- griffithii, Pleurotomaria griffithii F. McCoy, 1844 † - syn of: Tropidostropha punctata Longstaff, 1912 † - (PLEUROTOMARIIDAE) (FOSSIL)
- griffithii, Ptychobela griffithii (J.E. Gray, 1834) - (PSEUDOMELATOMIDAE)
- griffithii chittyi, Varicellaria griffithii chittyi H.A. Pilsbry, 1907 - (OLEACINIDAE)
- griffithii gracilior, Ptychobela griffithii gracilior (E.C. Von Martens, 1904) - (PSEUDOMELATOMIDAE)
- griffithii ischna, Varicellaria griffithii ischna H.A. Pilsbry, 1907 - (OLEACINIDAE)
- griffithshauchleri, Kalidos griffithshauchleri K.C. Emberton, 2002 - (ARIOPHANTIDAE)
- griffithsi, Selenophaedusa diplochilus griffithsi J. Grego & M. Szekeres, 2011 - (CLAUSILIIDAE)
- griffithsi, Owensgriffithsius griffithsi K.C. Emberton, 2002 - (CYCLOPHORIDAE)
- griffithsi, Ctenophila griffithsi K.C. Emberton, 1994 - (HELICARIONIDAE)
- griffithsi, Fluvidona griffithsi W.B. Miller, W.F. Ponder & K.B. Clark, 1999 - (HYDROBIIDAE)
- griffithsi, Gulella griffithsi K.C. Emberton, 2001 - (STREPTAXIDAE)
- griffithsiana, Aplysia griffithsiana W.E. Leach, 1847 - syn of: Aplysia punctata (G.L.C.F.D. Cuvier, 1803) - (APLYSIIDAE)
- griffithsii, Cultrigera griffithsii (J. Gardner, 1875 †) - (APORRHAIDAE) (FOSSIL)
- griffithsii, Subzebrinus griffithsii (W.H. Benson, 1848) - (ENIDAE)
- Griffithsina, Genus Griffithsina J. Stanisic, 2010 (RHYTIDIDAE)
- griffithsjonesi, Clavator griffithsjonesi K.C. Emberton, 1999 - (ACAVIDAE)
- griggi, Decatopecten radula griggi Webb, 1957 - (PECTINIDAE)
- grignense, Loxonema grignense E.A.L. Kittl, 1899 † - (LOXONEMATIDAE) (FOSSIL)
- grignonense, Trapezium grignonense G.P. Deshayes, 1824 † - (TRAPEZIDAE) (FOSSIL)
- grignonensis, Amaurellina grignonensis A.V.M.D. D'Orbigny, 1850 † - syn of: Ampullina acuta (J.B.P.A. Lamarck, 1804 †) - (AMPULLINIDAE) (FOSSIL)
- grignonensis, Bathytormus tenuistria grignonensis (G.P. Deshayes, 1857 †) - (CRASSATELLIDAE) (FOSSIL)
- grignonensis, Acrilla reticulata grignonensis A.E.M. Cossmann, 1888 † - (EPITONIIDAE) (FOSSIL)
- grignonensis, Cultellus grignonensis G.P. Deshayes, 1856 † - (PHARIDAE) (FOSSIL)
- grignonensis, Thracia grignonensis G.P. Deshayes, 1857 † - (THRACIIDAE) (FOSSIL)
- grignonensis, Triphora grignonensis G.P. Deshayes, 1864 † - (TRIPHORIDAE) (FOSSIL)
- grigorievi, Euxinipyrgula grigorievi (T.L. Alexenko & Y.I. Starobogatov, 1987) - (HYDROBIIDAE)
- grijalvae, Physa grijalvae D.W. Taylor, 2003 - (PHYSIDAE)
- grijalvae, Odostomia grijalvae F.C. Baker, G.D. Hanna & A.M. Strong, 1928 - (PYRAMIDELLIDAE)
- grijalvae, Anodonta grijalvae P.M.A. Morelet, 1884 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- grileyi, Gastrioceras grileyi Miller & Owen, 1944 † - (GASTRIOCERATIDAE) (FOSSIL)
- grillanum, Cerithium grillanum E.M. Spieker, 1922 † - (CERITHIIDAE) (FOSSIL)
- grillensis, Torrella immersa grillensis C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- grillensis, Tetrentodon grillensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- grilloana, Corbicula grilloana P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- grilloensis, Cerion grilloensis M.I. Sánchez Roig, 1951 - (CERIONIDAE)
- grimaldi macaronesica, Triphora grimaldi macaronesica F. Nordsieck & F.F. Talavera, 1979 - syn of: Marshallora adversa (G. Montagu, 1803) - (TRIPHORIDAE)
- grimaldii, Acteon grimaldii P. Dautzenberg & H. Fischer, 1896 - syn of: Mysouffa turrita (R.B. Watson, 1883) - (ACTEONIDAE)
- grimaldii, Alexandromenia grimaldii E.H.J. Leloup, 1946 - (AMPHIMENIIDAE)
- grimaldii, Calliostoma grimaldii P. Dautzenberg & H. Fischer, 1896 - (CALLIOSTOMATIDAE)
- grimaldii, Carinaria grimaldii A.J.B.M. Vayssière, 1904 - syn of: Carinaria lamarcki F. Péron & C.A. Lesueur, 1810 - (CARINARIIDAE)
- grimaldii, Cirroteuthis grimaldii L.M.A.O.E. Joubin, 1903 - syn of: Opisthoteuthis grimaldii (L.M.A.O.E. Joubin, 1903) - (CIRROTEUTHIDAE)
- grimaldii, Amphissa grimaldii P. Dautzenberg, 1889 - syn of: Amphissa acutecostata (R.A. Philippi, 1844) - (COLUMBELLIDAE)
- grimaldii, Cylichna grimaldii P. Dautzenberg, 1891 - (CYLICHNIDAE)
- grimaldii, Bellaspira grimaldii P. Dautzenberg, 1889 - syn of: Amphissa acutecostata (R.A. Philippi, 1844) - (DRILLIIDAE)
- grimaldii, Opalia grimaldii P. Dautzenberg & M.E.A. de Boury, 1897 - syn of: Cylindriscala jeffreysi (G.W. Tryon, 1887) - (EPITONIIDAE)
- grimaldii, Eulima grimaldii P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- grimaldii, Fusus grimaldii P. Dautzenberg & H. Fischer, 1896 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (FASCIOLARIIDAE)
- grimaldii, Amiantofusus grimaldii P. Dautzenberg & H. Fischer, 1896 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (FASCIOLARIIDAE)
- grimaldii, Cylichnatys grimaldii (P. Dautzenberg, 1891) - (HAMINOEIDAE)
- grimaldii, Candidula grimaldii E. Caziot, 1910 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- grimaldii, Lepidoteuthis grimaldii L.M.A.O.E. Joubin, 1895 - (LEPIDOTEUTHIDAE)
- grimaldii, Galba grimaldii E. Caziot, 1910 - syn of: Galba truncatula (O.F. Müller, 1774) - (LYMNAEIDAE)
- grimaldii, Bela grimaldii P. Dautzenberg, 1889 - syn of: Amphissa acutecostata (R.A. Philippi, 1844) - (MANGELIIDAE)
- grimaldii, Mastigoteuthis grimaldii (L.M.A.O.E. Joubin, 1895) - (MASTIGOTEUTHIDAE)
- grimaldii, Trophon grimaldii P. Dautzenberg & H. Fischer, 1896 - syn of: Pagodula echinata (L.C. Kiener, 1840) - (MURICIDAE)
- grimaldii, Hindsia grimaldii P. Dautzenberg, 1889 - syn of: Pisanianura grimaldii (P. Dautzenberg, 1899) - (NASSARIIDAE)
- grimaldii, Opisthoteuthis grimaldii (L.M.A.O.E. Joubin, 1903) - (OPISTHOTEUTHIDAE)
- grimaldii, Pisanianura grimaldii (P. Dautzenberg, 1899) - (PISANIANURIDAE)
- grimaldii, Abra grimaldii (P. Dautzenberg & H. Fischer, 1906) - (SEMELIDAE)
- grimaldii, Cosmotriphora grimaldii P. Dautzenberg & H. Fischer, 1906 - syn of: Cosmotriphora melanura (C.B. Adams, 1850) - (TRIPHORIDAE)
- grimaldii major, Fusus grimaldii major É.A.A. Locard, 1897 - syn of: Amiantofusus amiantus (W.H. Dall, 1889) - (FASCIOLARIIDAE)
- GRIMALDITEUTHIDAE - syn of Family: CHIROTEUTHIDAE
- Grimalditeuthis, Genus Grimalditeuthis L.M.A.O.E. Joubin, 1898 (CHIROTEUTHIDAE)
- grimaudi, Tiberia grimaudi E. Saurin, 1959 - (PYRAMIDELLIDAE)
- grimburgi, Phanerotrema grimburgi (Frech, 1894 †) - (PHANEROTREMATIDAE) (FOSSIL)
- grimburgi, Pleurotomaria grimburgi Frech, 1894 † - syn of: Phanerotrema grimburgi (Frech, 1894 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- grimesi, Metis grimesi Noetling, 1901 † - (TELLINIDAE) (FOSSIL)
- grimmensis, Maturifusus grimmensis Grundel, 1999 † - (PSEUDOTRITONIIDAE) (FOSSIL)
- grimmeri, Andraea dubia grimmeri L. Pfeiffer, 1848 - (CLAUSILIIDAE)
- grimmeri, Entogonites grimmeri E.A.L. Kittl, 1904 † - (ENTOGONITIDAE) (FOSSIL)
- grimmertingenensis, Raphitoma grimmertingenensis R. Marquet, Lenaerts & Laporte, 2016 † - (RAPHITOMIDAE) (FOSSIL)
- grimmi, Staliopsis grimmi (W.R. Schlickum, 1961 †) - (AMNICOLIDAE) (FOSSIL)
- grimmi, Adacna grimmi N.I. Andrusov, 1923 - syn of: Hypanis plicatum (K.E.I. von Eichwald, 1829) - (CARDIIDAE)
- grimmi, Dreissena grimmi N.I. Andrusov, 1897 - syn of: Dreissena rostriformis (G.P. Deshayes, 1838) - (DREISSENIDAE)
- grimmi, Ecrobia grimmi (S. Clessin & W. Dybowski, 1888) - (HYDROBIIDAE)
- grimmi, Pyrgula grimmi (S. Clessin & W. Dybowski in W. Dybowski, 1888) - (HYDROBIIDAE)
- grimmi, Caspiohydrobia grimmi (S. Clessin in W. Dybowski, 1888) - (HYDROBIIDAE)
- grimmi, Paravitrea grimmi L.R. Hubricht, 1968 - (ZONITIDAE)
- grimmi gemmata, Hydrobia grimmi gemmata C.M. Kolesnikov, 1947 - syn of: Caspiohydrobia gemmata (C.M. Kolesnikov, 1947) - (HYDROBIIDAE)
- grimpei, Bathypolypus grimpei C.W. Robson, 1924 - syn of: Bathypolypus valdiviae (K.H.J. Thiele in C. Chun, 1915) - (BATHYPOLYPODIDAE)
- grimpei, Pygmabralia grimpei (G. Voss, 1959) - (ENOPLOTEUTHIDAE)
- Grimpella, Genus Grimpella G.C. Robson, 1928 (OCTOPODIDAE)
- GRIMPOTEUTHIDAE - syn of Family: OPISTHOTEUTHIDAE
- Grimpoteuthis, Genus Grimpoteuthis G.C. Robson, 1932 (OPISTHOTEUTHIDAE)
- Grimsbyoceras, Genus Grimsbyoceras Foerste, 1934 † (ACLEISTOCERATIDAE) (FOSSIL)
- grindleyi, Buccinulum grindleyi J. Marwick, 1965 † - (BUCCINIDAE) (FOSSIL)
- grindleyi, Gazameda grindleyi (J. Marwick, 1971 †) - (TURRITELLIDAE) (FOSSIL)
- grindrodi, Didymaspis grindrodi E.R. Lankester, 1867 † - (CEPHALASPIDAE) (FOSSIL)
- grindrodi, Orthoceras grindrodi Blake, 1882 † - (ORTHOCERATIDAE) (FOSSIL)
- grindrodii, Rhabdostropha grindrodii J. Donald, 1905 † - (LOXONEMATIDAE) (FOSSIL)
- grinnelli, Claudiconcha grinnelli A.A. Olsson, 1914 † - (VENERIDAE) (FOSSIL)
- griphus, Metathisbites griphus Tozer, 1994 † - (THISBITIDAE) (FOSSIL)
- grippi, Ophiodermella grippi (W.H. Dall, 1919) - (BORSONIIDAE)
- grippi, Drilliola grippi (H.J. Anderson, 1964 ) - (BORSONIIDAE)
- grippi, Cerithiopsis grippi P. Bartsch, 1917 - (CERITHIOPSIDAE)
- grippi, Bellaspira grippi (W.H. Dall, 1908) - (DRILLIIDAE)
- grippi, Elachisina grippi W.H. Dall, 1918 - (ELACHISINIDAE)
- grippi, Melanella grippi (P. Bartsch, 1917) - (EULIMIDAE)
- grippi, Rochefortia grippi W.H. Dall, 1912 - (LASAEIDAE)
- grippi, Benthomangelia grippi Anderson, 1964 † - (MANGELIIDAE) (FOSSIL)
- grippi, Urosalpinx grippi (W.H. Dall, 1911) - (MURICIDAE)
- grippi, Eupleura grippi W.H. Dall, 1911 - syn of: Urosalpinx grippi (W.H. Dall, 1911) - (MURICIDAE)
- grippi, Pseudomelatoma grippi W.H. Dall, 1919 - syn of: Ophiodermella grippi (W.H. Dall, 1919) - (PSEUDOMELATOMIDAE)
- grippi, Turbonilla grippi P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- grippiana, Odostomia grippiana P. Bartsch, 1912 - (PYRAMIDELLIDAE)
- grippii, Homalopoma grippii (W.H. Dall, 1911) - (COLLONIIDAE)
- grippii, Leptothyra grippii W.H. Dall, 1911 - syn of: Homalopoma grippii (W.H. Dall, 1911) - (COLLONIIDAE)
- Grippina, Genus Grippina W.H. Dall, 1912 (SPHENIOPSIDAE)
- griqualandica, Nesopupa griqualandica (J.C. Melvill & J.H. Ponsonby, 1893) - (VERTIGINIDAE)
- griscomi, Diodora griscomi T.A. Conrad, 1834 † - (FISSURELLIDAE) (FOSSIL)
- grisea, Partulina grisea W. Newcomb, 1854 - syn of: Partulina dwightii concomitans A. Hyatt, 1912 - (ACHATINELLIDAE)
- grisea, Achatinella grisea W. Newcomb, 1854 - syn of: Partulina dwightii concomitans A. Hyatt, 1912 - (ACHATINELLIDAE)
- grisea, Armina grisea O'Donoghue, 1929 - (ARMINIDAE)
- grisea, Siphonalia cassidariaeformis grisea A. Adams, 1863 - (BUCCINIDAE)
- grisea, Cerion grisea C.J. Maynard, 1894 - (CERIONIDAE)
- grisea, Albinaria grisea (G.P. Deshayes, 1835) - (CLAUSILIIDAE)
- grisea, Sprattia bicarinata grisea E. Neubert, 1992 - (CLAUSILIIDAE)
- grisea, Parabalea gibbosula grisea H. Nordsieck, 2010 - (CLAUSILIIDAE)
- grisea, Zafrona grisea E.A. Smith, 1884 - syn of: Zafrona isomella (P.L. Duclos, 1840) - (COLUMBELLIDAE)
- grisea, Cylichna grisea E.A. Smith, 1875 - syn of: Cylichna alba (J. Brown, 1827) - (CYLICHNIDAE)
- grisea, Staphylaea grisea G.S. Coen, 1949 - syn of: Staphylaea staphylaea (C. Linnaeus, 1758) - (CYPRAEIDAE)
- grisea, Persicula grisea F.P. Jousseaume, 1917 - syn of: Cryptospira grisea (F.P. Jousseaume, 1917) - (CYSTISCIDAE)
- grisea, Dendrodoris grisea (E.F. Kelaart, 1858) - (DENDRODORIDIDAE)
- grisea, Doris grisea E.F. Kelaart, 1858 - syn of: Dendrodoris grisea (E.F. Kelaart, 1858) - (DORIDIDAE)
- grisea, Cratena grisea (J.J. Risbec, 1928) - (FACELINIDAE)
- grisea, Haminoea grisea E.A. Smith, 1875 - syn of: Cylichna alba (J. Brown, 1827) - (HAMINOEIDAE)
- grisea, Superba grisea (P. Subai, 1990) - (HELICIDAE)
- grisea, Helix grisea J.F. Gmelin, 1798 - syn of: Cornu aspersum (O.F. Müller, 1774) - (HELICIDAE)
- grisea, Bembicium grisea R.A. Philippi, 1851 - syn of: Bembicium nanum (J.B.P.A. Lamarck, 1822) - (LITTORINIDAE)
- grisea, Mangelia grisea (F. Nordsieck, 1977) - (MANGELIIDAE)
- grisea, Cryptospira grisea (F.P. Jousseaume, 1917) - (MARGINELLIDAE)
- grisea, Mopalia grisea W.H. Dall, 1919 - syn of: Plaxiphora aurata (J.J.N.A. Spalowsky, 1795) - (MOPALIIDAE)
- grisea, Plaxiphora grisea W.H. Dall, 1919 - syn of: Plaxiphora aurata (J.J.N.A. Spalowsky, 1795) - (MOPALIIDAE)
- grisea, Thais grisea P.F. Röding, 1798 - syn of: Stramonita haemastoma (C. Linnaeus, 1767) - (MURICIDAE)
- grisea, Vilasina grisea W.H. Dall, 1907 - syn of: Vilasina seminuda (W.H. Dall, 1897) - (MYTILIDAE)
- grisea, Natica grisea E. Réquien, 1848 - syn of: Euspira intricata (E. Donovan, 1804) - (NATICIDAE)
- grisea, Natica grisea E.C. Von Martens, 1878 - syn of: Kerguelenatica delicatula (E.A. Smith, 1902) - (NATICIDAE)
- grisea, Nerita grisea L.A. Reeve, 1855 - (NERITIDAE)
- grisea, Onchidoris grisea (A.A. Gould, 1870) - (ONCHIDORIDIDAE)
- grisea, Patella grisea A. Risso, 1826 - syn of: Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- grisea, Patella grisea H.M.D. de Blainville, 1825 - syn of: Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- grisea, Ceratophyllidia grisea C.N.E. Eliot, 1903 - syn of: Ceratophyllidia africana C.N.E. Eliot, 1903 - (PHYLLIDIIDAE)
- grisea, Goniobasis grisea (J.G. Anthony, 1860) - (PLEUROCERIDAE)
- grisea, Onoba grisea (E.C. Von Martens, 1885) - (RISSOIDAE)
- grisea, Siphonaria pectinata grisea (J.F. Gmelin, 1791) - (SIPHONARIIDAE)
- grisea, Pleurotoma grisea E.A. Smith, 1884 - syn of: Zafrona isomella (P.L. Duclos, 1840) - (TURRIDAE)
- grisea, Notopaphia grisea (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- grisea, Venus grisea J.B.P.A. Lamarck, 1818 - syn of: Notopaphia grisea (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- grisea, Callina grisea T.D.A. Cockerell, 1922 - syn of: Callina rotula (R.T. Lowe, 1831) - (VIVIPARIDAE)
- grisea akrocurta, Albinaria grisea akrocurta E. Gittenberger, 1994 - (CLAUSILIIDAE)
- grisea heterochroa, Albinaria grisea heterochroa (C.A. Westerlund, 1894) - (CLAUSILIIDAE)
- grisea immensa, Albinaria grisea immensa (O. Böttger, 1889) - (CLAUSILIIDAE)
- grisea micromaculata, Albinaria grisea micromaculata E. Neubert, 1998 - (CLAUSILIIDAE)
- grisea thiesseana, Albinaria grisea thiesseana (O. Böttger, 1883) - (CLAUSILIIDAE)
- grisebla, Pupa grisebla P.F. Röding, 1798 - syn of: Pupa solidula (C. Linnaeus, 1758) - (ACTEONIDAE)
- griseibasis, Achatinella apexfulva griseibasis D.A. Welch, 1942 - (ACHATINELLIDAE)
- griseicalx, Cominella griseicalx R.C. Willan, 1978 - (BUCCINIDAE)
- griseipicta, Achatinella mustelina griseipicta D.A. Welch, 1938 - (ACHATINELLIDAE)
- griseitincta, Achatinella mustelina griseitincta D.A. Welch, 1938 - (ACHATINELLIDAE)
- griseizona, Achatinella concavospira griseizona H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- griseo, Onchidella griseo C.M. Tapparone-Canefri, 1874 - syn of: Onchidium griseofuscum (C.M. Tapparone-Canefri, 1874) - (ONCHIDIIDAE)
- griseoalba, Agaronia griseoalba (E.C. Von Martens, 1897) - (OLIVIDAE)
- griseofusca, Astrogena griseofusca (A. Mousson, 1876) - (CLAUSILIIDAE)
- griseofuscum, Onchidium griseofuscum (C.M. Tapparone-Canefri, 1874) - (ONCHIDIIDAE)
- griseola, Helix griseola L. Pfeiffer, 1841 - syn of: Praticolella griseola (L. Pfeiffer, 1841) - (HELICIDAE)
- griseola, Praticolella griseola (L. Pfeiffer, 1841) - (POLYGYRIDAE)
- griseolum, Pisidium griseolum V. Sterki, 1922 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- griseum, Cochlostoma tessellatum griseum (A. Mousson, 1859) - (COCHLOSTOMATIDAE)
- griseum, Diplommatina tyosenica griseum J.T. Kuroda & M. Miyanaga, 1939 - (DIPLOMMATINIDAE)
- griseum, Onchidium griseum H.P. Plate, 1893 - syn of: Onchidium griseofuscum (C.M. Tapparone-Canefri, 1874) - (ONCHIDIIDAE)
- griseus, Busiris griseus A. Risso, 1826 - syn of: Notarchus punctatus R.A. Philippi, 1836 - (APLYSIIDAE)
- griseus, Colus griseus (W.H. Dall, 1889) - (BUCCINIDAE)
- griseus, Conus griseus L.C. Kiener, 1845 - syn of: Monteiroconus ambiguus (L.A. Reeve, 1844) - (CONIDAE)
- griseus, Paralimax griseus H.R. Simroth, 1912 - syn of: Eumilax intermittens (O. Böttger, 1883) - (LIMACIDAE)
- griseus, Pecten griseus J.B.P.A. Lamarck, 1819 - syn of: Flexopecten glaber (C. Linnaeus, 1758) - (PECTINIDAE)
- griseus, Planaxis griseus G.B. Brocchi, 1821 - syn of: Planaxis savignyi G.P. Deshayes, 1844 - (PLANAXIDAE)
- griseus, Phyllocaulis griseus H.R. Simroth, 1914 - syn of: Phyllocaulis tuberculosus (E.C. Von Martens, 1868) - (VERONICELLIDAE)
- groatensis, Platyscaphites groatensis Cobban, J. Kennedy & Landman, 1999 † - (SCAPHITIDAE) (FOSSIL)
- grobbai, Teredo grobbai C.E. von Moll, 1937 - syn of: Teredo bartschi W.F. Clapp, 1923 - (TEREDINIDAE)
- grobbeni, Malayites grobbeni Diener, 1921 † - (JUVAVITIDAE) (FOSSIL)
- grobbeni, Paladilhiopsis grobbeni L. Kušcer, 1928 - (MOITESSIERIIDAE)
- grobbeni anzeianum, Paladilhiopsis grobbeni anzeianum (R. Slapnik, 1995) - (MOITESSIERIIDAE)
- grobei, Macroceramus grobei L. Pfeiffer, 1862 - (UROCOPTIDAE)
- groboni, Candidula groboni J.R. Bourguignat in É.A.A. Locard, 1882 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- grochmalickii, Pyrgohydrobia grochmalickii (W. Polinski, 1929) - (HYDROBIIDAE)
- grochmanni, Helix grochmanni R.A. Philippi, 1836 - syn of: Murella muralis grohmanni (R.A. Philippi, 1836) - (HELICIDAE)
- grockeae, Mitraelyria mitraeformis grockeae (E.J. Petuch & D.P. Berschauer, 2017) - (VOLUTIDAE)
- Groeberella, Genus Groeberella Leanza, 1993 † (GROEBERELLIDAE) (FOSSIL)
- GROEBERELLIDAE Pérez, Reyes & Damborenea, 1995 † - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-TRIGONIIDA [Order]-TRIGONIOIDEA [Superfamily]) (FOSSIL)
- groeberi, Paraspiticeras groeberi Aguirre-Urreta, 1993 † - (EMERICICERATIDAE) (FOSSIL)
- groeberi, Parallelodon groeberi Damborenea, 1987 † - (PARALLELODONTIDAE) (FOSSIL)
- Groebericeras, Genus Groebericeras Leanza, 1945 † (OLCOSTEPHANIDAE) (FOSSIL)
- GROENLANDIBELIDAE Jeletzky, 1966 † - Family (CEPHALOPODA-COLEOIDEA [Subclass]-DECAPODIFORMES [Superorder]-SPIRULIDA [Order]) (FOSSIL)
- Groenlandibelus, Genus Groenlandibelus Birkelund, 1956 † (GROENLANDIBELIDAE) (FOSSIL)
- groenlandica, Lyapinella groenlandica D.P. Kelly † - (ASTARTIDAE) (FOSSIL)
- groenlandica, Prographularia groenlandica Fischer, 1947 † - (AULACOCERATIDAE) (FOSSIL)
- groenlandica, Bucania groenlandica Peel, 1991 † - (BUCANIIDAE) (FOSSIL)
- groenlandica, Stenothecoides groenlandica Peel, 1988 † - (CAMBRIDIIDAE) (FOSSIL)
- groenlandica, Epitonium groenlandica H.J. Posselt, 1898 - syn of: Boreoscala greenlandica (G. Perry, 1811) - (EPITONIIDAE)
- groenlandica, Figurina groenlandica Skovsted, 2004 † - (HELCIONELLIDAE) (FOSSIL)
- groenlandica, Hiatella groenlandica V.L.V. Potiez & A. Michaud, 1844 - syn of: Hiatella arctica (C. Linnaeus, 1767) - (HIATELLIDAE)
- groenlandica, Littorina groenlandica K.T. Menke, 1830 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (LITTORINIDAE)
- groenlandica, Mactromya groenlandica Rosenkrantz, 1934 † - (MACTROMYIDAE) (FOSSIL)
- groenlandica, Margarites groenlandica H.P.C. Møller, 1842 - syn of: Margarites costalis (A.A. Gould, 1841) - (MARGARITIDAE)
- groenlandica, Mitra groenlandica H.H. Beck in H.P.C. Møller, 1842 - syn of: Volutomitra groenlandica (H.H. Beck in H.P.C. Møller, 1842) - (MITRIDAE)
- groenlandica, Crassiconcha groenlandica Frebold, 1932 † - (MODIOMORPHIDAE) (FOSSIL)
- groenlandica, Hormotoma groenlandica Troedsson, 1928 † - syn of: Cyrtostropha salteri tennesseensis (Ulrich & Scofield, 1897 †) - (MURCHISONIIDAE) (FOSSIL)
- groenlandica, Promyalina groenlandica Newell, 1955 † - (MYALINIDAE) (FOSSIL)
- groenlandica, Natica groenlandica H.P.C. Møller, 1842 - syn of: Euspira pallida (W.J. Broderip & G.B. I Sowerby, 1829) - (NATICIDAE)
- groenlandica, Natica groenlandica H.H. Beck, 1847 - syn of: Euspira montagui (E. Forbes, 1838) - (NATICIDAE)
- groenlandica, Nucula groenlandica H.J. Posselt, 1898 - syn of: Megayoldia thraciaeformis (D.H. Storer, 1838) - (NUCULIDAE)
- groenlandica, Nucula groenlandica H.J. Posselt, 1898 - syn of: Megayoldia thraciaeformis (D.H. Storer, 1838) - (NUCULIDAE)
- groenlandica, Lenatheca groenlandica (C.M. Poulsen, 1932 †) - (ORTHOTHECIDAE) (FOSSIL)
- groenlandica, Pecten groenlandica Sowerby, 1842 - syn of: Similipecten greenlandicus (G.B. II Sowerby, 1842) - (PECTINIDAE)
- groenlandica, Permoteuthis groenlandica Rosenkrantz, 1946 † - (PHRAGMOTEUTHIDIDAE) (FOSSIL)
- groenlandica, Similipecten groenlandica (Sowerby) † - (PROPEAMUSSIIDAE) (FOSSIL)
- groenlandica, Similotheca groenlandica Malinky & Skovsted, 2004 † - (SIMILOTHECIDAE) (FOSSIL)
- groenlandica, Oxyloma elegans groenlandica (H.P.C. Møller, 1842) - (SUCCINEIDAE)
- groenlandica, Onchidiopsis groenlandica L.S.R. Bergh, 1853 - (VELUTINIDAE)
- groenlandica, Volutomitra groenlandica (H.H. Beck in H.P.C. Møller, 1842) - (VOLUTOMITRIDAE)
- groenlandica, Megayoldia groenlandica H.J. Posselt, 1898 - syn of: Megayoldia thraciaeformis (D.H. Storer, 1838) - (YOLDIIDAE)
- groenlandica laevior, Littorina groenlandica laevior O.A.L. Mörch, 1857 - syn of: Littorina obtusata (C. Linnaeus, 1758) - (LITTORINIDAE)
- groenlandica pacifica, Onchidiopsis groenlandica pacifica L.S.R. Bergh, 1887 - syn of: Onchidiopsis glacialis (M. Sars, 1851) - (VELUTINIDAE)
- groenlandicum, Pseudotrapezium groenlandicum Spath, 1936 † - (ARCTICIDAE) (FOSSIL)
- groenlandicum, Buccinum groenlandicum J.H. Chemnitz, 1788 - syn of: Buccinum cyaneum J.G. Bruguière, 1792 - (BUCCINIDAE)
- groenlandicum, Oxyloma groenlandicum (H.P.C. Møller, 1842) - (SUCCINEIDAE)
- groenlandicus, Bathypolypus groenlandicus J.J.S. Steenstrup, 1856 - syn of: Bathypolypus arcticus (V. Prosch, 1849) - (BATHYPOLYPODIDAE)
- groenlandicus, Coelocyclus groenlandicus C.M. Poulsen, 1974 † - (BELLEROPHONTIDAE) (FOSSIL)
- groenlandicus, Serripes groenlandicus (N.P. Mohr, 1786) - (CARDIIDAE)
- groenlandicus, Margarites groenlandicus (J.F. Gmelin, 1791) - (MARGARITIDAE)
- groenlandicus, Polinices groenlandicus H.P.C. Møller, 1842 - syn of: Euspira pallida (W.J. Broderip & G.B. I Sowerby, 1829) - (NATICIDAE)
- groenlandicus, Sigaretus groenlandicus H.P.C. Møller, 1842 - syn of: Marsenina glabra (J.P.Y. Couthouy, 1838) - (NATICIDAE)
- groenlandicus, Pectinatites groenlandicus (Spath, 1936 †) - (PERISPHINCTIDAE) (FOSSIL)
- groenlandicus, Menjaites groenlandicus Alsen, 2006 † - (POLYPTYCHITIDAE) (FOSSIL)
- groenlandicus, Turbo groenlandicus P.F. Röding, 1798 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (TURBINIDAE)
- groenlandicus fabricii, Serripes groenlandicus fabricii (G.P. Deshayes, 1855) - (CARDIIDAE)
- groenlandicus kurilensis, Margarites groenlandicus kurilensis A.N. Golikov & V.V. Gulbin, 1978 - (MARGARITIDAE)
- groenlandicus laevior, Trochus groenlandicus laevior J.G. Jeffreys, 1865 - syn of: Margarites striatus (W.E. Leach, 1819) - (TROCHIDAE)
- groenlandicus umbilicalis, Margarites groenlandicus umbilicalis (W.J. Broderip & G.B. I Sowerby, 1829) - (MARGARITIDAE)
- Groenlandites, Genus Groenlandites Kummel , 1953 † (LONGOBARDITIDAE) (FOSSIL)
- grohae, Prosipho grohae W. Engl, 2005 - (BUCCINIDAE)
- grohi, Calliostoma grohi D. Stratmann & P. Stahlschmidt, 2007 - (CALLIOSTOMATIDAE)
- grohi, Endemoconus grohi M.J. Tenorio & G.T. Poppe, 2004 - (CONIDAE)
- grohi, Napaeus grohi M.R. Alonso, C.M. Ibáñez & J. Santana, 2011 - (ENIDAE)
- grohi, Turbonilla grohi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- grohi, Plicolyria planicostata grohi P. Bail & G.T. Poppe, 2004 † - (VOLUTIDAE) (FOSSIL)
- Grohiellus, Subgenus Obelus (Grohiellus) Neiber, Walther & al., 2016 (COCHLICELLIDAE)
- grohmanni, Murella muralis grohmanni (R.A. Philippi, 1836) - (HELICIDAE)
- grohmanniana, Siciliaria grohmanniana (E.A. Rossmässler, 1836) - (CLAUSILIIDAE)
- grohmanniana densa, Siciliaria grohmanniana densa T.A. de M. Monterosato, 1894 - (CLAUSILIIDAE)
- grohorum, Cypraeovula fuscodentata grohorum F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- grohorum, Trivia grohorum (D. Fehse & J. Grego, 2008) - (TRIVIIDAE)
- grohorum, Niveria grohorum D. Fehse & J. Grego, 2008 - syn of: Trivia grohorum (D. Fehse & J. Grego, 2008) - (TRIVIIDAE)
- groisenbachensis, Odontohydrobia groisenbachensis M. Harzhauser & al., 2012 † - (HYDROBIIDAE) (FOSSIL)
- gromatica, Sitala gromatica H.H. Godwin-Austen, 1882 - (ARIOPHANTIDAE)
- grondini, Conus grondini Larue, 1995 - syn of: Fulgiconus moluccensis (H.C. Küster, 1838) - (CONIDAE)
- gronensis, Eumorphotis gronensis Wittenburg, 1908 † - (HETEROPECTINIDAE) (FOSSIL)
- gronlandica, Ostrea gronlandica Lundgren, 1895 † - syn of: Gryphaea cymbium J.B.P.A. Lamarck, 1819 † - (OSTREIDAE) (FOSSIL)
- gronlandica, Pholadomya gronlandica Lundgren, 1895 - (PHOLADOMYIDAE)
- grönlandicus, Serripes grönlandicus J.H. Chemnitz, 1782 - syn of: Serripes groenlandicus (N.P. Mohr, 1786) - (CARDIIDAE)
- gronlandicus protractus, Serripes gronlandicus protractus W.H. Dall, 1900 - syn of: Serripes groenlandicus (N.P. Mohr, 1786) - (CARDIIDAE)
- gronoviana, Ferussacia gronoviana A. Risso, 1826 - syn of: Ferussacia folliculus (J.S. Schröter, 1784) - (FERUSSACIIDAE)
- groomii, Longstaffia groomii (J. Donald, 1905 †) - (LOPHOSPIRIDAE) (FOSSIL)
- Groomodiscus, Genus Groomodiscus Rohr & Yochelson, 1990 † (TROPIDODISCIDAE) (FOSSIL)
- grooti, Palaeocypraea grooti H.G. Richards & Shapiro, 1963 † - (CYPRAEIDAE) (FOSSIL)
- grooti, Murex grooti B.W. Jenkins, 1864 † - (MURICIDAE) (FOSSIL)
- gropana, Montenegrina sturanyana gropana Z. Fehér & M. Szekeres, 2016 - (CLAUSILIIDAE)
- groschi, Chiton groschi P. Kaas, 1979 - (CHITONIDAE)
- groschi, Iredalula groschi K. Fraussen & D. Monsecour, 2007 - (COLUBRARIIDAE)
- groschi, Clavus groschi R.N. Kilburn, 1988 - (DRILLIIDAE)
- groschi, Triplex groschi E.H. Vokes, 1978 - (MURICIDAE)
- groschi, Coralliophila groschi R.N. Kilburn, 1977 - syn of: Coralliophila erosa (P.F. Röding, 1798) - (MURICIDAE)
- groschi, Spondylus groschi K.L. Lamprell & R.N. Kilburn, 1995 - (SPONDYLIDAE)
- groschi, Coluzea groschi M.G. Harasewych & K. Fraussen, 2001 - (TURBINELLIDAE)
- grosi, Volvarina grosi J. Espinosa & J.A. Ortea, 2012 - (MARGINELLIDAE)
- grossa, Callispira grossa Hoare & al., 1997 † - (ACANTHONEMATIDAE) (FOSSIL)
- grossa, Achatinella grossa L. Pfeiffer - syn of: Amastra porphyrea (W. Newcomb, 1853) - (ACHATINELLIDAE)
- grossa, Globularia grossa G.P. Deshayes, 1864 † - (AMPULLINIDAE) (FOSSIL)
- grossa, Albinaria nivea grossa H. Nordsieck, 2005 - (CLAUSILIIDAE)
- grossa, Pyrostoma plicatula grossa (C.A. Westerlund, 1878) - (CLAUSILIIDAE)
- grossa, Cochlodina laminata grossa (E.A. Rossmässler, 1835) - (CLAUSILIIDAE)
- grossa, Macedonica marginata grossa (E.A. Rossmässler, 1835) - (CLAUSILIIDAE)
- grossa, Leptothyra grossa S.Y. Feng, 1996 - (COLLONIIDAE)
- grossa, Cernuella grossa W. Kobelt, 1907 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- grossa, Mancinella grossa (R. Houart, 2001) - (MURICIDAE)
- grossa, Nerita grossa C. Linnaeus, 1758 - (NERITIDAE)
- grossa, Turbonilla grossa W.B. Marshall, 1894 - syn of: Turbonilla sinuosa (J.G. Jeffreys, 1884) - (PYRAMIDELLIDAE)
- grossa, Rissoa membranacea grossa A. Michaud, 1832 - (RISSOIDAE)
- grossa, Gulella grossa E.C. Von Martens, 1892 - (STREPTAXIDAE)
- grossa, Anodonta grossa H.T. von Gallenstein, 1852 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- grossa elatopsis, Rissoa grossa elatopsis P. Mars, 1956 - syn of: Rissoa membranacea elatopsis P. Mars, 1956 - (RISSOIDAE)
- grossecostata, Granaria grossecostata (Gottschick & Wenz, 1919) † - (CHONDRINIDAE) (FOSSIL)
- grossecostata, Tinnyea grossecostata (E. Klein, 1852 †) - (PACHYCHILIDAE) (FOSSIL)
- grossi, Volutoconus grossi (T. Iredale, 1927) - (VOLUTIDAE)
- grossi helenae, Volutoconus grossi helenae D.F. McMichael, 1966 - syn of: Volutoconus mcmichaeli T. Habe & S. Kosuge, 1966 - (VOLUTIDAE)
- grossi mcmichaeli, Volutoconus grossi mcmichaeli T. Habe & S. Kosuge, 1966 - syn of: Volutoconus mcmichaeli T. Habe & S. Kosuge, 1966 - (VOLUTIDAE)
- grossiana, Mimachlamys grossiana T. Iredale, 1939 - syn of: Laevichlamys squamosa (J.F. Gmelin, 1791) - (PECTINIDAE)
- grossiana, Strigilla grossiana C. Hedley, 1908 - (TELLINIDAE)
- grossicingulata, Amaea grossicingulata (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- grossicostata, Opalia grossicostata P. Nyst, 1871 - syn of: Opalia hotessieriana (A.V.M.D. D'Orbigny, 1842) - (EPITONIIDAE)
- grossicostata, Zygopleura brevis grossicostata Longstaff, 1933 † - (ZYGOPLEURIDAE) (FOSSIL)
- grossicostatum, Salinites grossicostatum (Imlay, 1939 †) - (OPPELIIDAE) (FOSSIL)
- grossicostatum, Macrophylloceras grossicostatum Imlay, 1953 † - (PHYLLOCERATIDAE) (FOSSIL)
- grossicostus, Obtusoconus grossicostus S.Y. Feng & al., 1994 † - (HELCIONELLIDAE) (FOSSIL)
- grossii, Conus grossii C. Maravigna, 1853 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- grossior, Cochlodinella grossior C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- grossiventrosa, Scalaspira grossiventrosa (O.V. Amitrov, 1966 †) - (STREPSIDURIDAE) (FOSSIL)
- grossouvrei, Metacalycoceras grossouvrei Spath, 1926 † - syn of: Calycoceras naviculare (Mantell, 1822 †) - (ACANTHOCERATIDAE) (FOSSIL)
- grossouvrei, Chartronella grossouvrei Fischer, 1964 † - (ATAPHRIDAE) (FOSSIL)
- grossouvrei, Pseudoschloenbachia grossouvrei Spath 1921 † - (MUNIERICERATIDAE) (FOSSIL)
- grossouvrei, Lunuloceras grossouvrei C.F. Parona & Bonarelli, 1895 † - (OPPELIIDAE) (FOSSIL)
- grossouvrei, Chlamys grossouvrei A.E.M. Cossmann, 1907 - (PECTINIDAE)
- grossouvrei, Placenticeras grossouvrei Semenov, 1899 † - (PLACENTICERATIDAE) (FOSSIL)
- grossouvrei, Oonia grossouvrei A.E.M. Cossmann, 1899 † - (PSEUDOMELANIIDAE) (FOSSIL)
- grossouvrei, Rehmannia grossouvrei (Petitclerc, 1915 †) - (REINECKEIIDAE) (FOSSIL)
- Grossouvria, Genus Grossouvria Siemiradzki, 1898 † (PERISPHINCTIDAE) (FOSSIL)
- Grossouvrites, Genus Grossouvrites Kilian & Reboul, 1909 † (KOSSMATICERATIDAE) (FOSSIL)
- grossuana, Alopia grossuana H. Nordsieck, 1977 - (CLAUSILIIDAE)
- Grossuana, Genus Grossuana P. Radoman, 1973 (HYDROBIIDAE)
- grossuana nemethi, Alopia grossuana nemethi T. Deli & M. Szekeres, 2011 - (CLAUSILIIDAE)
- grossui, Agardhia grossui A. Zilch, 1958 - (ARGNIDAE)
- grossui, Bythinella grossui A. Falniowski, M. Szarowska & I. Sirbu, 2009 - (BYTHINELLIDAE)
- grossui, Adacna grossui O.A. Scarlato & Y.I. Starobogatov, 1972 - syn of: Monodacna caspia (K.E.I. von Eichwald, 1829) - (CARDIIDAE)
- grossui, Bulgarica rugicollis grossui H. Nordsieck, 1973 - (CLAUSILIIDAE)
- grossui, Limax grossui D. Lupu, 1970 - syn of: Limacus maculatus (J. Kaleniczenko, 1851) - (LIMACIDAE)
- grossula, Globicarina grossula C.O. Waterhouse, 1965 † - (EDMONDIIDAE) (FOSSIL)
- grossularia, Eolis grossularia P. Fischer, 1869 - syn of: Berghia verrucicornis (A. da Costa, 1867) - (AEOLIDIIDAE)
- grossularia, Cerithium lividulum grossularia T.A. de M. Monterosato, 1917 - (CERITHIIDAE)
- grossularia, Otala grossularia E.C. Von Martens, 1900 - syn of: Otala lactea (O.F. Müller, 1774) - (HELICIDAE)
- grossularia, Drupina grossularia (P.F. Röding, 1798) - (MURICIDAE)
- grossularia, Drupa grossularia P.F. Röding, 1798 - syn of: Drupina grossularia (P.F. Röding, 1798) - (MURICIDAE)
- grossularia, Euspira grossularia (I. Marche-Marchad, 1957) - (NATICIDAE)
- grossulariae, Helix grossulariae I. von Voith, 1838 - syn of: Helicigona lapicida grossulariae (I. von Voith, 1838) - (HELICIDAE)
- grossulariae, Helicigona lapicida grossulariae (I. von Voith, 1838) - (HELICIDAE)
- grossum, Cristilabrum grossum G.A. Solem, 1981 - (CAMAENIDAE)
- grossum, Spathoderma grossum A.H. Scheltema & D. Ivanov, 2000 - (PROCHAETODERMATIDAE)
- grosvenori, Margarites grosvenori W.H. Dall, 1926 - syn of: Margarites olivaceus (T. Brown, 1827) - (MARGARITIDAE)
- grosvenori, Physa grosvenori I. Lea, 1864 - syn of: Haitia mexicana (R.A. Philippi, 1841) - (PHYSIDAE)
- grosvenori, Succinea grosvenori I. Lea, 1864 - (SUCCINEIDAE)
- Grotriania, Genus Grotriania Speyer, 1860 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- groulti, Phengus groulti F.P. Jousseaume, 1894 - (BRADYBAENIDAE)
- groulti, Papuina groulti (P. Dautzenberg, 1902) - (CAMAENIDAE)
- groulti, Helix groulti P. Dautzenberg, 1902 - syn of: Papuina groulti (P. Dautzenberg, 1902) - (HELICIDAE)
- grouti, Anchura grouti Bergquist, 1944 † - (APORRHAIDAE) (FOSSIL)
- grovensis, Cuspidaria grovensis L.W. Stephenson, 1941 † - (CUSPIDARIIDAE) (FOSSIL)
- grovesi, Varicorbula grovesi (E.V. Coan, 2002) - (CORBULIDAE)
- grovesi, Cylichna grovesi Á. Valdés, 2008 - (CYLICHNIDAE)
- grovesi, Siphocypraea grovesi E.J. Petuch, 1998 † - (CYPRAEIDAE) (FOSSIL)
- grovesi, Solecardia grovesi P.H. Valentich-Scott & E.V. Coan, 2012 - (GALEOMMATIDAE)
- grovesi, Scabrotrophon grovesi J.H. McLean, 1996 - (MURICIDAE)
- grovesi, Americoliva grovesi E.J. Petuch & B.W. Myers, 2014 - (OLIVIDAE)
- grovesi, Crenavolva grovesi F.Jr. Lorenz & D. Fehse, 2009 - (OVULIDAE)
- grovesi, Berthella grovesi A. Hermosillo & Á. Valdés, 2008 - (PLEUROBRANCHIDAE)
- grovesi, Nehedia grovesi Johnston & Chatterton, 1983 † - (PSEUDOBIGALEAIDAE) (FOSSIL)
- grovesi, Pyrgulina grovesi Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- Grovesia, Genus Grovesia Dolin & Ledon, 2002 † (EOCYPRAEIDAE) (FOSSIL)
- grovesiana, Candidula grovesiana (M. Paulucci, 1881) - (HYGROMIIDAE)
- groviana, Cryptaxis groviana (A.E.J. Férussac, 1823) - (HYGROMIIDAE)
- groviana leonina, Cryptaxis groviana leonina (R.T. Lowe, 1852) - (HYGROMIIDAE)
- groviana vulcania, Cryptaxis groviana vulcania (R.T. Lowe, 1852) - (HYGROMIIDAE)
- groyanus, Theodoxus groyanus (A.E.J. Férussac, 1823 †) - (NERITIDAE) (FOSSIL)
- groyei, Melanopsis groyei P.M. Pallary, 1916 † - (MELANOPSIDAE) (FOSSIL)
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