Galeolaria australis – synonym of Sulculeolaria biloba
Galeolaria truncata – synonym of Lensia conoidea
Galiteuthis armatus – synonym of Galiteuthis armata
Galiteuthis suhmi – synonym of Galiteuthis armata
Gastrosaccus sanctus – synonym of Gastrosaccus spinifer
Gemmaria cladophora – synonym of Zanclea costata
Geryonia octona – synonym of Leuckartiara octona
Geryonia pellucida – synonym of Eirene viridula
Geryonia tetraphylla – synonym of Liriope tetraphylla
Geryonopsis delicatula – synonym of Eirene viridula
Gleba hippopus – synonym of Hippopodius hippopus
Gnathia termitoides – synonym of Gnathia maxillaris
Gonionemus vindobonensis – synonym of Gonionemus vertens
Gonynema vertens – synonym of Gonionemus vertens
Gossea circinata – synonym of Gossea corynetes
Greeffia celox – synonym of Alciopa reynaudii