Classification of Taylor et al. 2009
Cl. Equisetopsida Agardh 1825
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Ph. Pteridophyta Haeckel 1875 [fern]
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G. †Haplostigma Seward 1931
Or. †Rhacophytales Nemejc 1963
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G. †Chlidanophyton Gensel 1973
G. †Ellesmeris Stewart et al. 1997
G. †Eocladoxylon Halle 1936
G. †Protopteridophyton Li and Hsü 1987
Unr. †Moniliformopses
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Cl. †Cladoxylopsida Novák 1930
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Or. †Pseudosporochnales
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G. †Calamophyton Krausel and Weyland
G. †Cladoxylon Unger 1856
G. †Eospermatopteris Goldring 1924
G. †Hierogramma Unger 1856
G. †Hyenia Nathorst 1915
G. †Lorophyton Fairon-Demaret and Li 1993
G. †Pietzschia Gothan 1921
G. †Polyxylon Read and Campbell 1939
G. †Pseudosporochnus Potonie and Bernard 1903
G. †Rhymokalon Scheckler 1975
G. †Wattieza Stockmans 1968
G. †Xenocladia Arnold 1940
Cl. †Progymnospermopsida Lang 1925
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G. †Praeramunculus Anderson and Anderson 1985
Ph. Lycopodiophyta Scott 1900
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G. †Archaeosigillaria Kidston 1901
G. †Leptophloeum Dawson 1862
Cl. Lycopodiopsida Bartling 1830 [clubmoss]