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 Araucariales Gorozh. (1904)
             Family Podocarpaceae Endl. (1847), nom. cons. - podocarp family
               Genus †Sigmaphyllum R.S.Hill & L.J. Scriven (1999)