Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Pteridobiotina Britton & A. Br. (1896)
     Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       †Pteridospermatophyta Meyen
         †Lyginopteridopsida Novák (1961)
           †Callistophytales Rothwell (1981)
             †Callistophytaceae Stidd & J.W.Hall (1970), nom. cons. prop.
               †Mariopteris Zeiller (1879)