Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Lycopodiobiotina Doweld (2001)
     Division Lycopodiophyta D.H.Scott (1900) see Phylum Lycopodiophyta D.H.Scott (1900)
       Class Isoëtopsida Rolle (1884)
         Order †Lepidodendrales Haeckel (1868)
           Family †Spenceritaceae B. Thomas & Brack-Hanes ex Doweld (2001), nom. cons. prop.
             1 Genus †Arthrocladion Sauveur (1848), nom. nud.
             2 Genus †Bothrodendron Lindl. & Hutton (1833)
             3 Genus †Bothrostrobus Nath. ex Zalessky (1904)
             4 Genus †Spencerites D.H.Scott (1897)