Gessnerium mochimaensis – synonym of Alexandrium monilatum
Gessnerium ostenfeldii – synonym of Alexandrium ostenfeldii
Gessnerium tamarensis – synonym of Alexandrium tamarense
Glenodinium monotis – synonym of Coolia monotis
Goniaulax ostenfeldii – synonym of Alexandrium ostenfeldii
Goniaulax tamarensis – synonym of Alexandrium ostenfeldii
Goniodoma ostenfeldii – synonym of Alexandrium ostenfeldii
Goniodoma pseudogoniaulax – synonym of Alexandrium pseudogonyaulax
Gonyaulax acatenella – synonym of Alexandrium acatenella
Gonyaulax catenella – synonym of Alexandrium catenella
Gonyaulax excavata – synonym of Alexandrium tamarense
Gonyaulax globosa – synonym of Alexandrium ostenfeldii
Gonyaulax monilata – synonym of Alexandrium monilatum
Gonyaulax polyedra – synonym of Lingulodinium polyedrum
Gonyaulax schilleri – synonym of Pyrodinium bahamense compressum
Gonyaulax tamarensis – synonym of Alexandrium tamarense
Gonyaulax tamarensis var. excavata – synonym of Alexandrium tamarense
Gonyaulax trygvei – synonym of Alexandrium ostenfeldii
Gymnodinium galatheanum – synonym of Gyrodinium galatheanum
Gymnodinium micrum – synonym of Gyrodinium galatheanum
Gymnodinium nagasakiense – synonym of Gymnodinium mikimotoi
Gymnodinium nelsonii – synonym of Gymnodinium sanguineum
Gymnodinium splendens – synonym of Gymnodinium sanguineum
Gymnodinium type '84-K – synonym of Gymnodinium pulchellum
Gymnodinium vitiligo – synonym of Gymnodinium veneficum
Gyrodinium aureolum – synonym of Gymnodinium mikimotoi