Nododendron A.E.Artabe & A.B.Zamuner, 1991 genus synonym

Myelocalamites Grand'Eury, 1877 genus accepted

Coleophyllites Grand'Eury, 1877 genus accepted

Protocalamites Goebel, 1906 genus accepted

Calamites Suckow, 1784 genus doubtful

Arthropityostachys Renault, 1896 genus accepted

Pinnularia Lindley & W.Hutton, 1834 genus synonym

Weissia G.W.Rothwell & T.N.Taylor, 1971 genus synonym

Schlotheimia Sternberg, 1822 genus synonym

Asterophyllites A.T.Brongniart, 1828 genus accepted

Nematophyllum Fontaine & White, 1880 genus synonym

Annularia Sternberg, 1821 genus accepted

Arthrodendron Seward, 1898 genus doubtful

Calamites Sternberg, 1820 genus accepted

Casuarinites Schlotheim, 1820 genus synonym

Myriophyllites Artis, 1825 genus accepted

Huttonia Sternberg, 1837 genus accepted

Lobatannularia S.Kawasaki, 1927 genus accepted

Arthroxylon F.D.Reed, 1952 genus accepted

Arthropitys Göppert, 1864 genus accepted

Weissistachys G.W.Rothwell & T.N.Taylor, 1971 genus accepted

Calamostachys W.P.Schimper, 1880 genus accepted

Calamopitus W.C.Williamson, 1871 genus synonym

Calamoderma G.N.Sadovnikov, 1986 genus synonym

Calamodendroxylon F.C.Grand'Eury, 1877 genus accepted

Calamodendrophyllum F.C.Grand'Eury, 1879 genus accepted

Calamodendron (A.T.Brongniart) A.T.Brongniart, 1849 genus synonym

Calamodendrofloyos F.C.Grand'Eury, 1877 genus accepted

Calamodendrea Grand'Eury, 1877 genus accepted

Calamocladus W.P.Schimper, 1869 genus accepted

Calamocarpon Baxter, 1963 genus accepted

Calamitopsis W.Remy & R.Remy, 1978 genus doubtful

Calamitomyelon O.Lignier, 1910 genus accepted

Calamitis Sternberg, 1820 genus synonym

Calamitina Weiss, 1876 genus accepted

Calamitea B.Cotta, 1832 genus accepted

Archaeocalamites Stur, 1875 genus accepted

Leptocalamites J.W.Beeston, 1986 genus doubtful

Pendulostachys C.W.Good, 1975 genus doubtful

Brukmannia Sternberg, 1825 genus synonym

Protocalamostachys Walton, 1949 genus accepted

Nymbolaria W.B.K.Holmes, 2000 genus doubtful

Metacalamostachys M.Hirmer, 1927 genus accepted

Mesocalamites Hirmer, 1927 genus accepted

Cingularia C.E.Weiss, 1870 genus accepted

Dicalamophyllum Sterzel, 1880 genus accepted

Pothocites Paterson, 1844 genus accepted

Neostachya X.Wang, 1977 genus doubtful

Stachannularia C.E.Weiss, 1876 genus accepted

Mazostachys Kosanke, 1955 genus accepted

Haplocalamus Unger, 1856 genus accepted

Kallostachys Brush & Barghoorn, 1955 genus accepted

Paracalamostachys C.E.Weiss, 1884 genus accepted

Neocalamites T.G.Halle, 1908 genus accepted

Radicites H.Potonié, 1893 genus accepted

Neoannularia X.Wang, 1977 genus doubtful

Nematophyllites S.A.Miller, 1892 genus accepted

Palaeostachya C.E.Weiss, 1876 genus accepted

Zonulamites W.B.K.Holmes, 2000 genus synonym

Zimmermannioxylon K.U.Leistikow, 1962 genus accepted

Austroannularia J.F.Rigby, 1989 genus doubtful

Arthrodendron (A.C.Seward) D.H.Scott, 1900 genus synonym

Myriophylloides T.Hick & W.Cash, 1881 genus accepted

Astromyelon W.C.Williamson, 1883 genus accepted

Asthenomyelon K.U.Leistikow, 1962 genus accepted

Asterophyllostachys Schimper, 1880 genus accepted

Asterocalamites (W.P.Schimper, 1862) R.Zeiller, 1879 genus synonym

Pothocitopsis Nathorst, 1914 genus accepted