Superclass Dictyochia Haeckel (1894)
   Class Actinochrysophyceae Caval.-Sm. (1995) see [unranked] Stramenopila
     1 Subclass Silicophycidae Rothmaler (1951) see Class Dictyochophyceae Silva (1980)
     2 Subclass Abaxodinae K.A. Mikrjukov, 2001 see [unranked] Stramenopila