G Ga Gabbioceras Gabillytes Gaetanoceras Gagaticeras Galaticeras Galbanites Gangadharites Garantiana Gargasiceras Garniericeras Garnierisphinctes Gastrioceras Gastroplites Gattendorfia Gattenpleura Gaudryceras Gaurites Gauthiericeras Gazdaganites
Ge Gemmellaroceras Gentoniceras Genuclymenia Georgioceras Germariceras Geyeroceras Gevanites
Gi Girtyoceras
Gl Glabrophysodoceras Glamocites Glaphyrites Glassoceras Glatziella Glaucolithites Gleboceras Glebosoceras Gleviceras Glochiceras Glottoptychinites Glyphidites Glyphiolobus Glyptarpites Glyptoceras Glyptoxoceras
Gn Gnomohalorites
Go Goganites thumb|250px|right|Skamielina gatunku z rodzaju Goganites Gogoceras Goliathiceras Goliathites Goniatites Gonioclymenia Goniocyclus Gonioglyphioceras Gonioloboceras Gonioloboceratoides Gonionotites Gonolkites Goodhallites
Gr