Phylum Dinoflagellata Engl. (1903)
see Superclass Dinoflagellata Bütschli, 1885
Subphylum Dinokaryota Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
Class Dinophyceae Pascher (1914)
Subclass Gymnodiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
Order Gymnodiniales Apstein (1909)
Suborder Gymnodiniineae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
see Order Gymnodiniales Apstein (1909)
Family Kareniaceae Bergholtz, Daugbjerg, Moestrup & Fernández-Tejedor (2006)
see Family Brachidiniaceae Sournia (1972)
Genus Karenia Gert Hansen & Moestrup (2000)