chromalveolates see Supergroup Chromalveolata Adl et al., 2005
   Kingdom Chromista Caval.-Sm. (1981) - chromists
     Subkingdom Chromobiota Caval.-Sm. (1991)
       Infrakingdom Heterokonta Caval.-Sm. (1986) - heterokonts see Superphylum Heterokonta Caval.-Sm. (1986)
         Phylum Ochrophyta Caval.-Sm. (1995)
           Subphylum Phaeista Caval.-Sm. (1995)
             Infraphylum Hypogyrista Caval.-Sm. (1995) see Superclass Hypogyristia Caval.-Sm. (2006)
               1 Class Pelagophyceae R.A. Andersen & G.W.Saunders (1993) see Class Dictyochophyceae Silva (1980)
               2 Class Actinochrysea Caval.-Sm. (1995) see Class Dictyochophyceae Silva (1980)
               3 Class Pinguiophyceae Kawachi, Inouye, Honda, O'Kelly, Bailey, Bidigare & Andersen (2002)