life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925
     Superkingdom Metakaryota see Domain Eukaryota Chatton, 1925
       Kingdom Chromista Caval.-Sm. (1981) - chromists
         Subkingdom Euchromista Cavalier-Sm. (1993) see [unranked] Stramenopila
           Infrakingdom Chromobiota Caval.-Sm. (1986)
             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 Chrysista Caval.-Sm. (1993)
                   1 Class Chrysophycea Hibberd (1976) see Class Chrysophyceae Fritsch (1927)
                   2 Class Flavoretea Cavalier-Sm. (1993)
                   3 Class Xanthophycea Fritsch (1935) see Class Xanthophyceae P. Allorge ex Fritsch (1935)
                   3.0 [Tribophyceae Hibberd (1982)] see Class Xanthophyceae P. Allorge ex Fritsch (1935)
                   4 Class Phaeophycea Kjellman (1891) see Class Phaeophyceae Hansgirg (1886)
                   4.0.1 [Melanophyceae Rabenhorst, 1863] see Class Phaeophyceae Hansgirg (1886)
                   4.0.2 [Fucophyceae Warming (1884)] see Class Phaeophyceae Hansgirg (1886)