Kingdom Protista (Haeckel, 1866) - protists
   chromobionts
     1 Phylum Chrysophyta Pascher (1914) see Class Chrysophyceae Fritsch (1927)
     2 Phylum Haptophyta D.J. Hibberd ex Edvardsen & Eikrem (2000) see Subphylum Haptophytina Caval.-Sm. (2015)
     3 Phylum Bacillariophyta Engl. & Gilg (1919) - diatoms see [unranked] Diatomea Kütz. (1844)
     4 Phylum Xanthophyta Allorge, in Fritsch (1935) see Class Xanthophyceae P. Allorge ex Fritsch (1935)
     5 Phylum Eustigmatophyta Hibberd & Leedale (1970) see Phylum Ochrophyta Caval.-Sm. (1995)
     6 Phylum Phaeophyta Kjellman (1891) see Phylum Phaeophycota
     7 Phylum Proteromonadea Grassé, in Grassé, 1952, incertae sedis