Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       Subclass Choristida Sollas, 1880 see Order Tetractinellida Marshall, 1876
         1 Order Plakinida Reid, 1968 see Order Homosclerophorida Dendy, 1905
         2 Order Pachastrellida Reid, 2004 see Suborder Astrophorina Sollas, 1888
         3 Order Ancorinida Reid, 1968 see Suborder Astrophorina Sollas, 1888
         4 Order Craniellida Reid, 1968 see Suborder Spirophorina