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)
           Subclass Pedinellidae Caval.-Sm. (1986) see Class Dictyochophyceae Silva (1980)
             Order Ciliophryales Caval.-Sm. (1995) see Suborder Ciliophryineae Febvre-Chevalier ex Caval.-Sm. (2006)
               Family Actinomonadaceae Kent (1880)
                 Genus Pteridomonas Penard (1890)
                   1 Pteridomonas danica Patterson & Fenchel (1985)