Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       Division Pinophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) [monotypic]
         Class Pinopsida Burnett (1835)
           Order Pinales Dumort. (1829) [monotypic] - conifers
             Family Pinaceae Spreng. ex F.Rudolphi (1830), nom. cons. - pine family
               Subfamily Pinoideae Link
                 Genus †Obirastrobus Tak.Ohsawa, M.Nishida & H.Nishida (1992)