Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superphylum Pteridophytanae Doweld (2001) Phylum †Botryopteridiophyta Doweld (2001) see Division Monilophyta Cantino & Donoghue 1 Class †Botryopteridiopsida Doweld (2001) see Class Marattiopsida Doweld (2001) 2 Class †Urnatopteridopsida Doweld (2001) see Class Marattiopsida Doweld (2001) 3 Class †Stauropteridopsida Doweld (2001) [monotypic]