Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       Order Dictyoceratida Minchin, 1900
         1 Family Ircinidae Gray, 1867 see Family Irciniidae Gray, 1867
         2 Family Thorectidae Bergquist, 1978
         3 Family Spongiidae Gray, 1867
         4 Family Dysideidae Gray, 1867
         5 Family Verticillitidae Steinmann, 1882
         6 Genus Vaceletia Pickett, 1982 [monotypic]