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 †Becksinae Schrammen, 1912
             Genus †Oncolpia Pomel, 1872
               1 Subgenus †O. (Oncolpia) Pomel, 1872
               2 Subgenus †O. (Polyptycha) Defretin-Lefranc, 1961