Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       Order Astrophorida Sollas, 1888 see Suborder Astrophorina Sollas, 1888
         1 Family Ancorinidae Schmidt, 1870
         2 Family Calthropellidae Lendenfeld, 1906 [monotypic]
         3 Family Geodiidae Gray, 1867
         4 Family Pachastrellidae Carter, 1875
         5 Family Thoosidae Cockerell, 1925
         6 Family Thrombidae Sollas, 1887