Kingdom [Plantae] Haeckel (1866) - plants
   Division Gymnospermophyta Cleal (1994) - seed plants see Infraphylum Gymnospermae auct.
     Class Pinopsida Burnett (1835)
       Order Pinales Dumort. (1829) - conifers
         1 Family †Emporiaceae G. Mapes & Rothwell (2003) see Family Otoviciaceae Doweld (2001)
         2 Family †Utrechtiaceae G. Mapes & G.W. Rothwell (2003) see Family Walchiaceae Stur (1875)
         3 Family †Majonicaceae Clement-Westerhof (1987)
         4 Family †Ullmanniaceae Němejc (1959)
         5 Family †Voltziaceae Arnold (1947)