Sphenophyllum

Species that have been described include:

• †Sphenophyllum angustifolium^[3]
• †Sphenophyllum biarmicum Zalessky (1937)^[4]
• †Sphenophyllum changxingense^[3]
• †Sphenophyllum churulianum Ashw. K. Srivast. & Rigby (1963)^[5][6]
• †Sphenophyllum costae^[7]
• †Sphenophyllum crenulatum^[5]Ashw. K. Srivast. & Rigby (1963)^[5][8]
• †Sphenophyllum cuneifolium (Sternb.) Zeiller (1878)^[7][9]
• †Sphenophyllum elongatum Rassk. (1961)^[5][10]
• †Sphenophyllum emarginatum Brongn. (1822) (type species)^[3][5][11]
• †Sphenophyllum fanwanense^[3]
• †Sphenophyllum gilmorei C.D. White (1929)^[12]
• †Sphenophyllum gondwanensis^[5]
• †Sphenophyllum guangzhuoense, nomen nudum^[3]
• †Sphenophyllum koboense^[3]
• †Sphenophyllum latifolium Fontaine & I.C. White (1880)^[13]
• †Sphenophyllum longifolium (Germar) Gutbier (1843)^[14]
• †Sphenophyllum lungtanense^[3]
• †Sphenophyllum majus Bronn (1834)^[15]
• †Sphenophyllum miravallis Vetter^[16]
• †Sphenophyllum oblongifolium (Germar) Unger (1850)^[3][17]
• †Sphenophyllum paranaense O. Rösler & Rohn (1984)^[18]
• †Sphenophyllum pseudotenerrimum Sze (1936)^[3][19]
• †Sphenophyllum radiatum Unger (1850)^[5][20]
• †Sphenophyllum rhodesii^[3]
• †Sphenophyllum rotundatum T. Halle (1927)^[3][21]
• †Sphenophyllum schlotheimii Brongn. (1828)^[3][22]
• †Sphenophyllum sino-coreanum H. Yabe (1922)^[3][23]
• †Sphenophyllum stoukenbergi Schmalh. (1887)^[24]
• †Sphenophyllum subtenerrimum Nath. (1902)^[25]
• †Sphenophyllum tenuifolium Fontaine & I.C. White (1880)^[26]
• †Sphenophyllum thonii Mahr (1868)^[3][5][27]
• †Sphenophyllum utkalensis^[5]
• †Sphenophyllum verticillatum^[7]
• †Sphenophyllum zwickaviense^[3]