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 †Progymnospermophyta Bold et al. see Phylum Progymnospermophyta Lang (1925) Class †Progymnospermopsida Beck (1960) see Clade Pan-Spermatophyta Cantino & Donoghue 2007 [Cantino, Doyle & Donoghue 2020] Order †Cecropsidales Stubblef. & G.W.Rothwell (1989) [monotypic] Family †Cecropsidaceae Stubblefield & Rothwell [monotypic] Genus †Cecropsis Stubblef. & G.W.Rothwell (1989)