Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Parazoa (Sollas, 1884) see [unranked] Parazoa (Sollas, 1884)
       Phylum Spongia
         Class Demospongiae Sollas, 1885 - demosponges
           Order Tetraxonida
             Suborder Astrophora see Suborder Astrophorina Sollas, 1888
               Family Pachastrellidae Carter, 1875
                 Genus [Poecillastra] Sollas, 1888
                   Poecillastra compressa (Bowerbank, 1866)