living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Chromophycota see Phylum Chromophyta T.A.Chr. (1962), nom. nud.
           Class Phaeophyceae Hansgirg (1886) - brown algae
             Order Sphacelariales Migula (1908)
               1 Family Sphacelariaceae Decaisne (1842)
               2 Family Stypocaulaceae Oltmanns (1922)
               3 Family Cladostephaceae
               4 Family Choristocarpaceae Kjellman (1891) see Family Sphacelariaceae Decaisne (1842)