Classification of Meyen 1984

Ph. Pinophyta Reveal 1996 [conifer]
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Cl. Cycadopsida Brongniart 1843 [cycads]
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Or. †Bennettitales Bessey 1910
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Invalid names: Cycadeoideaceae [synonym]
Invalid names: Cycadeoideales Berry 1916 [synonym]
Or. Cycadales Dumortier 1829
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Fm. †Beaniaceae
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G. †Androstrobus Schimper 1870
G. †Beania Carruthers 1869
Fm. Cycadaceae Persoon 1807
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G. †Dirhopalostachys Krassilov 1975
G. †Nilssonia Brongniart 1825
Or. Gnetales Martius 1835
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Invalid names: Gnetaceae Lindley 1834 [empty]
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Invalid names: Buteoxylaceae [empty], Lagenostomaceae [empty]
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Invalid names: Medullosales [replaced], Trigonocarpaceae [empty]
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Fm. Welwitschiaceae Caruel
Cl. Ginkgoopsida Engler 1897
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Or. †Arberiales Meyen 1982
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Invalid names: Arberiaceae Rigby 1972 [empty], Glossopteridales Melville 1960 [replaced]
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Fm. †Calamopityaceae Scott 1909
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G. †Calamopitys Unger 1856
G. †Deltasperma Long 1961
G. †Eosperma Barnard 1959
G. †Kalymma Unger 1856
G. †Lyrasperma Long 1960
G. †Stenomyelon Kidston 1909
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G. †Angarocarpus Radczenko 1955
G. †Callandrium Stidd and Hall 1970
G. †Callistophyton Delevoryas and Morgan 1954
G. †Callospermarion Eggert and Delevoryas 1960
G. †Dicksonites Sterzel 1883
G. †Eremopteris Schimper 1869
G. †Gondwanotheca Neuburg 1948
G. †Idanothekion Millay and Eggert 1970
G. †Paragondwanidium Meyen 1967
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Or. Ephedrales Dumortier 1829
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Fm. Ephedraceae Dumortier 1829 [jointfir]
Or. Ginkgoales Goroschankin 1904
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Fm. †Ginkgoaceae Engler
Fm. †Karkeniaceae Krassilov 1972
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Invalid names: Czekanowskiales Pant 1957 [synonym], Iraniaceae [empty], Leptostrobaceae [empty]
Or. †Peltaspermales Delevoryas 1979
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Fm. †Cardiolepidaceae Meyen 1977
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G. †Cardiolepis Neuburg 1965
G. †Nucicarpus Neuburg 1965
G. †Phylladoderma Zalessky 1914
Fm. †Peltaspermaceae Harris 1937
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G. †Antevsia Harris 1937
G. †Autunia Krasser 1921
G. †Callipterianthus Roselt 1962
G. †Glossophyllum Kraeusel 1943
G. †Kirjamkenia Prynada 1970
G. †Lepidopteris Schimper 1869
G. †Leuthardtia Kraüsel and Schaarschmidt 1966
G. †Peltaspermum Harris 1937
G. †Pterispermostrobus Stopes 1914
G. †Scytophyllum Bornemann 1856
G. †Sphenobaiera Florin 1936
G. †Stiphorus Meyen [1982]
G. †Tatarina Meyen 1969
G. †Vittaephyllum Dobruskina 1975
G. †Permotheca Zalessky 1929
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G. †Biarmopteris Zalessky 1937
G. †Diceratosperma Andrews 1941
G. †Dichophyllum Elias 1936
G. †Mauerites Zalessky 1933
G. †Trichopitys Saporta 1875
Fm. †Umkomasiaceae Petriella 1981
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G. †Dicroidium Gothan 1912
G. †Harrisiothecium Lundblad 1961
G. †Nidia Bose and Srivastava 1973
G. †Nidistrobus Bose and Srivastava 1973
G. †Pachypteris Brongniart 1828
G. †Pilophorosperma Thomas 1933
G. †Pteroma Harris 1964
G. †Pteruchus Thomas 1933
G. †Ptilozamites Nathorst 1878
G. †Rhaphidopteris Barale 1972
G. †Rhexoxylon Bancroft 1913
G. †Umkomasia Thomas 1933
Invalid names: Corystospermaceae Thomas 1933 [replaced]
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Invalid names: Pentoxylaceae [empty]
Cl. Pinopsida Burnett 1833
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G. †Cordaitanthus Feistmantel 1876
G. †Gothania Hirmer 1933
G. †Mitrospermum Arber 1910
G. †Nucellangium Andrews, Jr. 1949
G. †Cordaites Unger 1850
G. †Nephropsis Zalessky 1912
Fm. †Rufloriaceae Meyen 1982
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G. †Bardocarpus Zalessky 1937
G. †Gaussia Neuberg 1934
G. †Krylovia Schischkin 1949
G. †Rufloria Meyen 1963
G. †Samaropsis Göppert 1864
Fm. †Vojnovskyaceae Neuburg 1963
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G. †Kuznetskia Gorelova and Meyen 1982
G. †Sylvella Zalessky 1937
G. †Vojnovskya Neuburg 1955
Or. Pinales Gorozhankin 1904
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Fm. Araucariaceae Henckel and Hochstetter 1865
Fm. Cephalotaxaceae Neger 1907
Fm. †Cheirolepidiaceae Turutanova-Ketova 1963
Fm. Cupressaceae Gray 1822 [cypress]
Fm. Pinaceae Rudolphi 1830
Fm. Podocarpaceae Endlicher 1847 [podocarp]
Fm. Taxaceae Gray 1822 [yew]
Fm. Taxodiaceae Saporta 1865
Fm. †Voltziaceae Arnold 1947
Invalid names: Buriadiaceae [empty], Coniferales [synonym], Cycadocarpidiaceae [empty], Lebachiaceae [empty]
Invalid names: Coniferopsida [synonym]
Invalid names: Gymnospermae [replaced]