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 Pinophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Class Pinopsida Burnett (1835)
             1 Class †Cordaitopsida Lesq. (1880) [monotypic] see Class Pinopsida Burnett (1835)
             2 Class †Voltziopsida Doweld (2001) see Class Pinopsida Burnett (1835)
             3 Class Pinopsida Burnett (1835)
             4 Class Podocarpopsida Doweld & Reveal (1999)
             5 Class Taxopsida Lotsy (1909)
             6 Class Ginkgoopsida Engl. (1897)