Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001) Division Monilophyta Cantino & Donoghue Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) Order †Sphenophyllales Wettst. (1903) [monotypic] Family †Sphenophyllaceae Warm. (1891) 1 Genus †Bowmanites Binney (1871) 2 Genus †Cheirostrobus D.H.Scott (1897) 3 Genus †Lilpopia Conert & F.Schaarschm. (1970) 4 Genus †Mesidiophyton Leisman (1964) 5 Genus †Rotularia Sternb. (1821) 6 Genus †Sphenophyllum Brongn. (1828), nom. cons.