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 †Moresnetiopsida Doweld (2001) Order †Tetrastichiales Němejc (1968) [monotypic] Family †Tetrastichiaceae Němejc (1968) [monotypic] Genus †Tetrastichia W.T.Gordon (1938)