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 Choristida Sollas, 1880 see Order Tetractinellida Marshall, 1876
    Count: [f†f] 4o;7f; †6f;33g [16 Jul 2018]
       Order Pachastrellida Reid, 2004 see Suborder Astrophorina Sollas, 1888
      Count: [f†g] 2f; †1f;13g [16 Jul 2018]
         Family Pachastrellidae Carter, 1875
        Count: [†g] †10g
           1 Subfamily Pachastrellinae Carter, 1875 see Family Pachastrellidae Carter, 1875
          Count: [†g] †2g
           2 Subfamily Calthropellinae von Lendenfeld, 1907 [monotypic] see Family Calthropellidae Lendenfeld, 1906
          Count: [†g] †1g
           3 Subfamily Halininae de Laubenfels, 1934
          Count: [†g] †2g
           4 Genus †Youngella de Laubenfels, 1955
          Count: -
           5 Genus †Acanthophora Sollas, 1873
          Count: -
           6 Genus †Helobrachium Schrammen, 1910
          Count: -
           7 Genus †Paropsites Pocta, 1884
          Count: -
           8 Genus †Propachastrella Schrammen, 1910
          Count: -