Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lychniscosa Schrammen, 1903 see Order Lychniscosida Schrammen, 1903
         Family †Ventriculitidae Smith, 1847
           Subfamily †Ventriculitinae Smith, 1847
             01 Genus †Etalloniella Oppliger, 1926
             02 Genus †Astropegma Pomel, 1872
             03 Genus †Coscinopora Goldfuss, 1826
             04 Genus †Flabellispongia Trest'yan, 1972
             05 ?Genus †Leiostracosia Schrammen, 1902
             06 Genus †Lepidospongia Roemer, 1864
             07 Genus †Licmosinion Pomel, 1872
             08 Genus †Napaeana de Laubenfels, 1955
             09 Genus †Orthodiscus Schrammen, 1924
             10 Genus †Phymosinion Pomel, 1872
             11 Genus †Pleuropyge Schrammen, 1912
             12 Genus †Rhizopoterion Zittel, 1878
             13 Genus †Rhizopoterionopsis Lachasse, 1943
             14 Genus †Spirospongia Kravtsov, 1968
             15 Genus †Sporadoscinia Pomel, 1872
             16 Genus †Ubiquiradius de Laubenfels, 1955
             17 Genus †Ventriculites Mantell, 1822