Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass †Lithistida Schmidt, 1870
       Order Tetralithistida Lagneau-Hérenger, 1962
         Suborder Dicranocladina Schrammen, 1924
           Family Corallistidae Sollas, 1888
             Subfamily †Pachinioninae Schrammen, 1924 [monotypic]
               1 Genus †Pachinion Zittel, 1878