organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Tracheata see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
         Phylum Pinophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Class Pinopsida Burnett (1835)
           1 Class †Pteridospermopsida see [unranked] pteridosperms
           1.n Class Cycadopsida Brongn. (1843)
           1.n.n.1 Class †Glossopteridopsida Plumstead (1956)
           1.n.n.2.1 Class Pinopsida Burnett (1835)
           1.n.n.2.2 Class Ginkgoopsida Engl. (1897)
           1.n.n.3.1 Class †Bennetitopsida
           1.n.n.3.2 Class Gnetopsida Eichler ex Kirpot. (1884)