Kingdom [Plantae] Haeckel (1866) - plants Division Pteridophyta Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998) Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) Order †Bowmanitales - sphenophylls see Order Sphenophyllales Wettst. (1903) Family †Cheirostrobaceae D.H.Scott (1902) see Family Sphenophyllaceae Warm. (1891)