Receaphyllum Z.Czier, 2005 genus doubtful

Traskia G.W.Rothwell, R.A.Stockey, D.W.Stevenson & C.Zumajo-Cardona, 2022 genus doubtful

Perisemoxylon D.He & X.Zhang, 1993 genus doubtful

Fredlindiaceae family synonym

Chiropteris Kurr, 1845 genus accepted

Concaryon Loubiere, 1956 genus accepted

Crematosaccus V.D.Prynada ex A.I.Turutanova-Ketova, 1963 genus doubtful

Crassofilicites W.Bock, 1969 genus accepted

Orthogoniopteris E.B.Andrews, 1875 genus accepted

Wonnacottia T.M.Harris, 1942 genus accepted

Williamsonianthus R.Kräusel & F.Schaarschmidt, 1966 genus accepted

Drepanozamites T.M.Harris, 1932 genus accepted

Ontheanthus P.N.Ganju, 1944 genus accepted

Williamsoniaceae family accepted

Foxeoidea G.W.Rothwell & R.A.Stockey, 2010 genus doubtful

Bysmatospermum T.M.Harris, 1935 genus accepted

Saxicaulis N.A.Jud, G.W.Rothwell & R.A.Stockey, 2010 genus doubtful

Taeniopteridaceae family accepted

Vardekloeftia T.M.Harris, 1932 genus accepted

Sarcospermum Deevers, 1937 genus accepted

Lepidanthium W.P.Schimper, 1870 genus accepted

Hildesheimia R.Florin, 1936 genus accepted

Sahnioxylon M.N.Bose & S.C.D.Sah, 1955 genus accepted

Leguminanthus R.Kräusel & F.Schaarschmidt, 1966 genus accepted

Anomozamites W.P.Schimper, 1870 genus accepted

Dictyozamites (Oldham) Medlicott & Blanford, 1879 genus doubtful

Dictyotrichia R.Weber, 2008 genus doubtful

Strangerites Bornemann, 1856 genus doubtful

Angiospermophyton Hoskins, 1923 genus accepted

Kutiella I.N.Srebrodolskaja, 1984 genus doubtful

Neozamites V.A.Vahrameev, 1962 genus accepted

Trigonocarpolithus C.A.Arnold, 1948 genus accepted

Bennettitolepis Florin, 1933 genus accepted

Amphibennetites P.Fliche, 1896 genus accepted

Plumsteadiella S.F.Le Roux, 1966 genus doubtful

Banatozamites Z.Czier, 1996 genus doubtful

Rajmahalia B.Sahni & A.R.Rao, 1934 genus accepted

Baikalophyllum E.V.Bugdaeva, 1983 genus doubtful

Bennettitaceae family synonym

Alicurana R.Herbst & S.Gnaedinger, 2002 genus doubtful

Navajoia G.R.Wieland, 1928 genus doubtful

Plumstaediella S.F.Le Roux, 1966 genus synonym

Pityocladus (A.G.Nathorst) A.C.Seward, 1919 genus accepted

Palaeanthus Newberry, 1895 genus accepted

Nageiopsis Fontaine, 1889 genus accepted

Naiadea J.Buckman, 1844 genus doubtful

Tyrmia M.I.Brik ex T.A.Sixtel, 1952 genus doubtful

Rehezamites C.Pott, S.McLoughlin, A.Lindström, S.Wu & E.M.Friis, 2012 genus doubtful

Kimuriella C.Pott & H.Takimoto, 2022 genus doubtful

Chilinia X.Li & M.Ye, 1980 genus doubtful

Homoxylon B.Sahni, 1932 genus synonym

Tomia I.N.Srebrodol'skaja, 1960 genus accepted

Tysonia Fontaine, 1889 genus doubtful

Moltenia Toit, 1927 genus accepted

Vitimia V.A.Vachrameev, 1977 genus doubtful

Sphenolepis Schenk, 1871 genus doubtful

Phoroxylon H.C.Sze, 1951 genus doubtful

Kashmiropteris H.M.Kapoor, 1992 genus doubtful

Westersheimiaceae family accepted

Williamsoniellaceae family accepted

Cycadea G.Capellini & H.Graf zu Solms-Laubach, 1892 genus accepted

Cycadales order accepted

Buteoxylaceae family accepted

Sturianthaceae family accepted

Cycadeoideaceae family accepted