Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Count: [*†*] 10p;24c;72o;262f;1685g; †5p;17c;56o;141f;593g Subkingdom Pteridobiotina Britton & A. Br. (1896) Count: [*†*] 6p;9c;20o;58f;370g; †2p;12c;42o;103f;488g Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001) Count: [*†*] 5p;5c;9o;12f;83g; †2p;12c;37o;72f;361g Division Ginkgophyta Bessey (1907) [monotypic] see Phylum Ginkgophyta Bessey (1907) Count: [*†*] 1c;1o;1f;1g; †2o;3f;21g [3 May 2023] Class Ginkgoopsida Engl. (1897) Count: [*†*] 1o;1f;1g; †2o;3f;21g [3 May 2023] Order †Karkeniales Doweld (2001) Count: [†*] †2f;8g [3 May 2023] Family †Karkeniaceae Krassilov (1972) Count: [†*] †7g [2 May 2023] Genus †Sphenobaierocladus Yang Xianhe (1986) Count: -