Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Amphidiscophora Schulze, 1886
       Order Reticulosa Reid, 1958
         Superfamily †Dictyospongioidea Hall & Clarke, 1899
           Family †Dictyospongiidae Hall & Clarke, 1898
             Subfamily †Hydnoceratinae Finks & Rigby, 2004
               01 Genus †Protoprisma Rigby & Collins, 2004
               02 Genus †Ceratodictya Hall & Clarke, 1898
               03 ?Genus †Clepsydrospongia Hall & Clarke, 1898
               04 Genus †Hydnoceras Conrad, 1842
               05 Genus †Hydnocerina Clarke, 1920
               06 Genus †Rhabdosispongia Hall & Clarke, 1898
               07 Genus †Botryodictya Hall & Clarke, 1898
               08 Genus †Cleodictya Hall, 1884
               09 Genus †Hydnoangulus Rigby & Ausich, 1981
               10 ?Genus †Tylodictya Hall & Clarke, 1900