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)
           Phylum †Botryopteridiophyta Doweld (2001) see Division Monilophyta Cantino & Donoghue
             Class †Urnatopteridopsida Doweld (2001) see Class Marattiopsida Doweld (2001)
               Order †Crossothecales Danzé ex Doweld (2001) [monotypic] see Order Stauropteridales Emberger (1944)
                 1 Family †Crossothecaceae Doweld (2001), nom. cons. prop. [monotypic] see Family Stauropteridaceae Hirmer (1927)