Gadila, Genus – synonym of Cadulus, Genus
Galaxura, Genus – synonym of Cochlodesma, Genus
Galeodina, Genus – synonym of Alvania, Genus
Galeodinopsis, Genus – synonym of Alvania, Genus
Galericulum, Genus – synonym of Velutina, Genus
Galvina, Genus – synonym of Eubranchus, Genus
Gastranella, Genus – synonym of Petricola, Genus
Gellina, Genus – synonym of Doto, Genus
Gervisia, Genus – synonym of Pleurobranchus, Genus
Gibbomodiola, Genus – synonym of Modiolus, Genus
Gibbulastra, Genus – synonym of Gibbula, Genus
Gibbuloidella, Genus – synonym of Gibbula, Genus
Ginnania, Genus – synonym of Bela, Genus
Glabrondina, Genus – synonym of Ondina, Genus
Glabropecten, Genus – synonym of Chlamys, Genus
Glocomene, Genus – synonym of Diplodonta, Genus
Glomulus, Genus – synonym of Gibbula, Genus
Glossulus, Genus – synonym of Gibbula, Genus
Glyphis, Genus – synonym of Diodora, Genus
Gobraeus, Genus – synonym of Gari, Genus
Goethemia, Genus – synonym of Parvicardium, Genus
Goniostoma, Genus – synonym of Rissoa, Genus
Graciliturbonilla, Genus – synonym of Turbonilla, Genus
Granopatella, Genus – synonym of Patella, Genus
Granotoma, Genus – synonym of Oenopota, Genus
Gravijubinus, Genus – synonym of Jujubinus, Genus
Greilada, Genus – synonym of Polycera, Genus
Gryphaea, Genus – synonym of Crassostrea, Genus
Gueriniana, Genus – synonym of Rissoa, Genus
Gussonea, Genus – synonym of Nassarius, Genus
Gymnotoplax, Genus – synonym of Berthella, Genus