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)
Family Stephanelytraceae Stover, Sarjeant & Drugg (1977), incertae sedis
1 Genus †Lagenadinium Piel (1985)
2 Genus †Stephanelytron Sarjeant (1961)