- †Gabrielona
- †Galeodaria
- †Galeodea
- †Galeodina
- †Galeodinopsis
- †Galeoocorys
- †Galericulus
- †Galeropsis
- †Gamizyga
- †Gammadiscus
- †Gamopleura
- †Ganesa
- †Gargania
- †Garnotia
- †Garramites
- †Gasconadia
- †Gazameda
- †Gegania
- †Gelagna
- †Gelasinostoma
- †Gemaspira
- †Gemmaterebra
- †Gemmellaroia
- †Gemmoliva
- †Gemmula
| - †Gemmuloborsonia
- †Genkaimurex
- †Genota
- †Geolcomia
- †Georgia
- †Gergovia
- Gibberula
- †Gibberulina
- †Gibberulus
- Gibbula
- †Gigantocapulus
- †Gigantocypraea
- †Gigantogonia
- †Gilbertina
- †Gilbertturricula
- †Ginebis
- †Girtyspira
- †Girvania
- †Gisortia
- †Gispyrella
- †Glabella
- †Glabrocingulum
- †Glaphyrina
- †Glauconia
- †Glauconiella
| - †Globiconcha
- †Globiomorpha
- †Globisinum
- †Globodrillia
- †Globonema
- †Globozygia
- †Globularia
- †Globulocerithium
- †Glosia
- †Glossaulax
- †Glyphodeta
- †Glyphostoma
- †Glyphoturris
- †Glyptochrysalis
- †Glyptomaria
- †Glyptospira
- †Glyptostyla
- †Glyptotoma
- †Glyptozaria
- †Gomphopages
- †Goniasma
- †Goniatogyra
- †Goniocheila
- †Gonioconcha
- †Goniocylichna
| - †Goniocylindrites
- †Goniodostomia
- †Goniogyra
- †Gonioptyxis
- †Goniospira
- †Gonysycon
- †Gonzagia
- †Gosavia
- †Gosseletina
- †Gothicispira
- †Gouetina
- †Gougerotia
- †Gourmya
- †Graciliala
- †Gracilipurpura
- †Gracilispira
- †Gradiella
- †Grandostoma
- †Granosolarium
- †Grantlandispira
- †Granula
- Granulina
- †Granulittorina
- †Granulolabium
- †Graphidula
| - †Graphiocomassa
- †Graphis
- †Gregorioiscala
- †Groomodiscus
- †Guelphinacella
- †Guidonia
- †Guildfordia
- †Guizhouia
- †Guizospira
- †Gumina
- †Guraleus
- †Gutturnium
- †Gymnarus
- †Gymnentome
- †Gymnocerithium
- †Gyrineum
- †Gyrodes
- †Gyrodoma
- †Gyroma
- †Gyronema
- Gyroscala
- †Gyrospira
- †Gyrotropis
|
