Kingdom [Plantae] Haeckel (1866) - plants Division Pteridophyta Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998) Class †Zosterophyllopsida Foster & Gifford (1974) [monotypic] Order †Zosterophyllales Bierhorst (1971) [monotypic] Family †Zosterophyllaceae Kräusel (1938)