List of dinosaurs
Galleonosaurus Gallimimus Galtonia –  a pseudosuchian; possibly a junior synonym of Revueltosaurus Galveosaurus – synonym of Galvesaurus Galvesaurus Gannansaurus "Gansutitan" - nomen nudum; Daxiatitan Ganzhousaurus Gargoyleosaurus Garudimimus Gasosaurus Gasparinisaura Gastonia "Gavinosaurus" – nomen nudum; Eotyrannus Geminiraptor Genusaurus Genyodectes Geranosaurus Gideonmantellia Giganotosaurus Gigantoraptor Gigantosaurus "Gigantosaurus" – preoccupied name, now known as Tornieria Gigantoscelus – junior synonym of Euskelosaurus Gigantspinosaurus Gilmoreosaurus "Ginnareemimus" – nomen nudum; Kinnareemimus Giraffatitan Glacialisaurus Glishades Glyptodontopelta Gobiceratops Gobihadros Gobiraptor Gobisaurus Gobititan Gobivenator "Godzillasaurus" – nomen nudum; Gojirasaurus Gojirasaurus Gondwanatitan Gongbusaurus Gongpoquansaurus Gongxianosaurus Gorgosaurus Goyocephale Graciliceratops Graciliraptor Gracilisuchus –  a non-dinosaurian archosaur