Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       Division †Pteridospermatophyta Meyen
         Class †Lyginopteridopsida Novák (1961)
           Order †Lyginopteridales Havlena (1961)
             Family †Lyginopteridaceae Zalessky (1906)
               1 Genus †Lagenospermopteris Doweld (2003), nom. illeg. see Genus Eusphenopteris Gothan ex Simson-Schar. (1934), nom. cons.
               2 Genus †Lyginodendron Gourlie (1843)
               3 Genus †Lyginopteris Potonié (1897)
               4 Genus †Megaloxylon Seward (1899)
               5 Genus †Pitys Witham (1833), nom. cons., orth. cons.
               6 Genus †Pseudopecopteris Lesq. (1880)
               7 Genus †Rhetinangium Gordon (1912)
               8 Genus †Sphenopteris (Brongn.) Sternb. (1825)