Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Pteridobiotina Britton & A. Br. (1896)
         Superphylum Pteridophytanae Doweld (2001)
           1[III] Phylum †Sphenophyllophyta D.H.Scott (1900) [monotypic] see Division Monilophyta Cantino & Donoghue
           2 Family †Boegendorfiaceae Kräusel & Weyland (1949), incertae sedis
           3 Family †Haspiaceae Koidz. (1938), incertae sedis
           4[IV] Phylum Equisetophyta D.H.Scott (1900) see Division Monilophyta Cantino & Donoghue
           5[V] Phylum †Cladoxylophyta Doweld (2001) [monotypic] see Division Monilophyta Cantino & Donoghue
           6[VI] Phylum Marattiophyta Heintze (1927) [monotypic] see Division Monilophyta Cantino & Donoghue
           7[VII] Phylum †Botryopteridiophyta Doweld (2001) see Division Monilophyta Cantino & Donoghue
           8[VIII] Phylum Ophioglossophyta Doweld (2001)
           9[IX] Phylum Pteridophyta Schimp. (1879) see Phylum Filicinophyta