Phylum Porifera Grant, 1836 - sponges
Count: [o†f] 3c;29o;74f; †1c;9o;134f [17 Jul 2018]
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
  Count: [o†f] 18o;41f; †5o;82f;531g [17 Jul 2018]
     Subclass †Lithistida Schmidt, 1870
    Count: [f†f] 5o;13f; †1o;25f;237g [17 Jul 2018]
       Order Tetralithistida Lagneau-Hérenger, 1962
      Count: [f†f] 5f; †8f;59g [23 Jun 2018]
         Suborder Tetracladina Zittel, 1878
        Count: [f†f] 2f; †6f;36g [23 Jun 2018]
           01 Family †Radiocelliidae Senowbari-Daryan & Wurm, 1994 see Family Radiocellidae Senowbari-Daryan & Wurm, 1994
          Count: -
           02 Family †Protetraclisidae Schrammen, 1924
          Count: -
           03 Family Siphoniidae d'Orbigny, 1851
          Count: -
           04 Family †Astrocladiidae Schrammen, 1901
          Count: -
           05 Family †Phymaraphiniidae Schrammen, 1910
          Count: †6g
           06 Family Theonellidae Lendenfeld, 1903
          Count: [†g] †21g
           07 Family †Plinthosellidae Schrammen, 1910
          Count: [†g] †3g
           08 Family †Chenendoporidae Roemer, 1864
          Count: [†g] †4g
           09 Genus †Vermiculissimum de Laubenfels, 1955
          Count: -
           10 Genus †Sulcastrella Schmidt, 1879
          Count: -