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 †Pteridospermatophyta Meyen Class †Arberiopsida Doweld (2001) a Order †Dicranophyllales Archangelsky & Cúneo (1990) [monotypic] b Order †Arberiales S.V.Meyen (1982) - glossopterids