Division Dinoflagellata Engl. (1903)
see Superclass Dinoflagellata Bütschli, 1885
Subdivision Dinokaryota Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
see Superclass Dinokaryota Fensome et al., 1993
Class Dinophyceae Pascher (1914)
Subclass Peridiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
Order Gonyaulacales F.J.R. Taylor (1980)
Suborder Goniodomineae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
Family Goniodomaceae Er. Lindem. (1928)
see Family Goniodomataceae Er. Lindem. (1928)
Subfamily Helgolandinioideae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
see Family Pyrocystaceae (F. Schütt) Lemmerm. (1899)
Genus Helgolandinium von Stosch (1969)
see Genus Fragilidium Balech ex A.R. Loebl. (1965)