Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       01 Order Spirophorida Bergquist & Hogg, 1969 see Suborder Spirophorina
       02 Order Astrophorida Sollas, 1888 see Suborder Astrophorina Sollas, 1888
       03 Order Hadromerida Topsent, 1894
       04 Order Chondrosida Boury-Esnault & Lopès, 1985
       05 Order "Lithistida" Schmidt, 1870 [polyphyletic] - lithistids see Subclass Lithistida Schmidt, 1870
       06 Order Poecilosclerida Topsent, 1928
       07 Order Halichondrida Vosmaer, 1887
       08 Order Agelasida Hartman, 1980
       09 Order Haplosclerida Topsent, 1928
       10 Order Dictyoceratida Minchin, 1900
       11 Order Dendroceratida Minchin, 1900
       12 Order Verongida Bergquist, 1978
       13 Genus Myceliospongia Vacelet & Perez, 1998, incertae sedis
       f1 Subclass Clavaxinellida Lévi, 1956
       f2 Subclass Choristida Sollas, 1880 see Order Tetractinellida Marshall, 1876
       f3 Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       f4 Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       f5 Subclass Lithistida Schmidt, 1870