Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lychniscosa Schrammen, 1903 see Order Lychniscosida Schrammen, 1903
         Family Callodictyonidae Zittel, 1878
           Subfamily Callicylicinae Reid, 2004
             Genus †Callicylix Schrammen, 1912
               1 Subgenus †C. (Cyclostigma) Schrammen, 1912
               2 Subgenus C. (Callicylix) Schrammen, 1912