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]
           Family Theonellidae Lendenfeld, 1903
          Count: [†g] †21g
             1 Subfamily Theonellinae von Lendenfeld, 1903
            Count: [†g] †8g
             2 Subfamily †Acrochordoniinae Schrammen, 1910
            Count: [†g] †7g
             3 Subfamily †Phymaplectiinae Reid, 2004
            Count: [†g] †2g
             4 Genus †Pachycorynea Pocta, 1907
            Count: -
             5 Genus †Rhopalospongia Hinde, 1883
            Count: -
             6 Genus †Verrucodesma Reid, 2004
            Count: -
             7 Genus †Zitteleus de Laubenfels, 1955
            Count: -