living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Embryobionta Cronquist, Takht. & W.Zimm.
         Division Filicophyta see Phylum Pterophyta
           1 Class Ophioglossopsida Thomé (1874) see Order Ophioglossales Link (1833)
           1 Subdivision Ophioglossopsida Thomé see Class Ophioglossopsida Thomé (1874)
           2 Subdivision Marattiopsida Doweld (2001) see Class Marattiopsida Doweld (2001)
           2 Class Marattiopsida Doweld (2001) see Subclass Marattiidae Klinge (1882)
           3 Class Filicopsida C.Agardh (1822) - ferns see Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966)
           3 Subdivision Filicopsida Pfefferkorn (1976) see Class Filicopsida C.Agardh (1822)