Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Lycopodiobiotina Doweld (2001)
     Division Lycopodiophyta D.H.Scott (1900) see Phylum Lycopodiophyta D.H.Scott (1900)
       Class Lycopodiopsida Bartl. (1830)
         Order †Protolepidodendrales Koidzumi (1939)
           Family †Omphalophloiaceae Nakai (1943)
             1 Genus †Caenodendron Zalessky (1919)
             2 Genus †Omphalophloios C.D.White (1898)
             3 Genus †Phialophloios O.Hörich (1915)
             4 Genus †Pinakodendron C.E.Weiss (1893)
             5 Genus †Thaumasiodendron Bureau (1906)