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 †Helomorina Schrammen, 1924 [monotypic]
        Count: [†f] †1f [23 Jun 2018]
           Family †Carterellidae Schrammen, 1901
          Count: -
             1 Subfamily †Carterellinae Schrammen, 1901
            Count: -
             2 Subfamily †Isoraphiniinae Schrammen, 1924 see Family Isoraphiniidae Schrammen, 1924
            Count: -