organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: 3k;19p;19c;80o;136f; †5p;1c;37o;52f
   Domain Eukaryota Chatton, 1925 - eukaryotes
  Count: 2k;18p;19c;77o;136f; †5p;1c;37o;52f
     Kingdom Plantae Haeckel (1866) - plants
    Count: 8p;11c;66o;136f; †5p;1c;37o;52f
       Subkingdom Viridaeplantae Cavalier-Sm. (1981) - green plants see [unranked] Viridiplantae Cavalier-Smith, 1981
      Count: 8p;11c;66o;136f; †5p;1c;37o;52f
         Land plants
        Count: 7p;7c;54o;127f; †5p;1c;33o;38f
           Phylum Cycadophyta Bessey (1907) see Subclass Cycadidae Pax (1894)
          Count: [o†f] 1o; †1o;2f
             Order †Bennettitales Bessey (1910) see Order Cycadeoideales E.W.Berry (1916)
            Count: [†f] †2f
               Family †Williamsoniaceae Nath. (1913)
              Count: -