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 †Lyginopteridopsida Novák (1961) Order †Hexapterospermales Doweld (2001) Family †Colpospermaceae Doweld (2001) [monotypic] 1 Genus †Colpospemum A.V.Novikov & B. Barabasz-Krasny (2015), orth. inval. see Genus Colpospermum Renault (1890)