Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lychniscosa Schrammen, 1903 see Order Lychniscosida Schrammen, 1903
         Family †Cypelliidae Schrammen, 1936
           1 Genus †Cypellia Pomel, 1872
           2 Genus †Paracypellia Schrammen, 1936
           3 Genus †Porocypellia Pomel, 1872
           4 Genus †Pseudoporospongia Hérenger, 1942
           5 Genus †Sporadopyge Schrammen, 1936