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 Cycadophytanae Doweld (2001)
           Phylum †Noeggerathiophyta Zimmerm. (1959) [monotypic]
             Class †Noeggerathiopsida Krysht. (1934)
               Order †Noeggerathiales Darrah (1939) [monotypic]
                 1 Family †Noeggerathiaceae Göpp. ex Eichw. (1854)