Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       Division Cycadophyta Bessey (1907)
         Class Cycadopsida Brongn. (1843)
           Subclass Zamiidae Doweld (2001)
             Order Zamiales Burnett (1835) [monotypic]
               Family Zamiaceae Horan. (1834)
                 1 Genus Bowenia Hook.f. (1863)
                 2 Genus Ceratozamia Brongn. (1846)
                 3 Genus Dioon Lindl. (1843), nom. cons., orth. cons.
                 4 Genus Encephalartos Lehm. (1834)
                 5 Genus Lepidozamia Regel (1857)
                 6 Genus Macrozamia Miq. (1842)
                 7 Genus Microcycas (Miq.) A.DC. (1868)
                 8 Genus Stangeria T.Moore (1853)
                 9 Genus Zamia L. (1763), nom. cons.