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 †Costamorphiidae Mostler, 1986 [monotypic]
        Count: [†g] †1g
           1 Genus †Costamorpha Mostler, 1986
          Count: -