organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Viridaeplantae Cavalier-Sm. (1981) - green plants see [unranked] Viridiplantae Cavalier-Smith, 1981
         Land plants
           Phylum Lycophyta - lycophytes see Infraphylum Lycophytae (auct.) Cavalier-Sm. (1998)
             Class Lycopsida - club-mosses see Class Lycopodiopsida Bartl. (1830)
               Order †Lepidodendrales Haeckel (1868)
                 1 Family †Lepidodendraceae Endl.
                 2 Family †Diaphorodendraceae DiMichele & R. Bateman (1992)
                 3 Family †Sigillariaceae Unger (1842) see Family Lepidodendraceae Endl.