Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Cnidaria Hatschek, 1888 - cnidarians
     Class Anthozoa Ehrenberg, 1831
       Subclass Zoantharia de Blainville, 1830
         Order †Rugosa Milne-Edwards & Haime, 1850
           Genus †Actinophyllum Phillips, 1848
           Genus †Barytichisma Moore & Jeffords, 1945
           Genus †Breviphrentis Stumm, 1949
           Genus †Cyathocylindrium Oliver, 1974
           Genus †Cylindrophyllum Simpson, 1900
           Genus †Faberophyllum Parks, 1951
           Genus †Favisitina
           Genus †Heliophyllum Dana, 1848
           Genus †Kionelasma Simpson, 1900
           Genus †Lithostrotion Fleming, 1828
           Genus †Lonsdaleia McCoy, 1849
           Genus †Metriophyllum Milne-Edwards & Haime, 1850