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 Diatomea Caval.-Sm. (1993) see [unranked] Diatomea Kütz. (1844)
                   Class Pennatea Schütt, 1896
                     1 Subclass Araphoidae
                     2 Subclass Raphoidae Cavalier-Smith, 1993