Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Lycopodiobiotina Doweld (2001)
     Division †Rhyniophyta Cronquist, Takht. & Zimmerm. (1966) see Phylum Rhyniophyta Cronquist, Takht. & Zimmerm. (1966)
       Class †Rhyniopsida Krysht. (1925)
         Order †Cooksoniales Doweld (2001)
           1 Family †Cooksoniaceae H. Banks ex D.Edwards (1970)
           2 Family †Renaliaceae Doweld (2001)