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 Megalithistida Reid, 2004
      Count: [f†f] 1f; †4f [17 Jul 2018]
         Suborder Megamorina Zittel, 1878
        Count: [f†f] 1f; †3f [17 Jul 2018]
           Family Pleromatidae Sollas, 1888
          Count: -
             1 Subfamily Pleromatinae Sollas, 1888
            Count: -
             2 Subfamily †Heterostiniinae Schrammen, 1924
            Count: -