Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass †Lithistida Schmidt, 1870
       Order Spirosclerophorida Reid, 1963
         Suborder Rhizomorina Zittel, 1895
           Superfamily Platychonioidea Schrammen, 1924
             Family Platychoniidae Schrammen, 1924
               1 Genus †Bothrolemma Schrammen, 1936
               2 Genus †Chonellopsis Schrammen, 1936
               3 Genus †Hyaloderma Oppliger, 1921
               4 Genus †Platychonia Zittel, 1878
               5 Genus †Amphibleptula Schmidt, 1879