Phylum Heterokonta Caval.-Sm. (1986) see Superphylum Heterokonta Caval.-Sm. (1986)
   Subphylum Ochrista Caval.-Sm. (1986), orth. inval. see Phylum Ochrista Caval.-Sm. (1995)
     Infraphylum Raphidoista Caval.-Sm. (1986)
       Superclass Dictyochia Haeckel (1894)
         Class Actinochrysea Caval.-Sm. (1995) see Class Dictyochophyceae Silva (1980)
           1 Subclass Pedinellidae Caval.-Sm. (1986) see Class Dictyochophyceae Silva (1980)
           2 Subclass Dictyochidae Haeckel (1894) see Class Dictyochophyceae Silva (1980)