Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Pteridobiotina Britton & A. Br. (1896)
     Monilophyta Cantino & Donoghue
       Marattiopsida Doweld (2001) see Subclass Marattiidae Klinge (1882)
         †Zygopteridales Emberger (1944)
           1 †Zygopteridaceae P.Bertrand ex D.H.Scott (1912)
           2 †Rhacophyton Crép. (1875)
           3 †Tedeleaceae D.A.Eggert & T.N.Taylor
           4 †Psalixochlaenaceae Holmes (1981)
           5 †Sermayaceae Eggert & Delevoryas (1967), nom. cons. prop.