Chlorobiota Kendrick et Crane Pteridobiotina [Britton & A. Br. (1896)] Cycadophytanae [Doweld (2001)] IX †Progymnospermophyta Bold et al. X †Pteridospermatophyta [Meyen] XI Cycadophyta [Bessey (1907)] Ginkgophyta [Bessey (1907)] [monotypic] Gnetophyta [Bessey (1907)] [monotypic] Pinophyta [Cronquist, Takht. & Zimmerm. ex Reveal (1996)] [monotypic] XV Magnoliophyta Cronq., Takht. et Zimerm. ex Reveal