Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       Order Poecilosclerida Topsent, 1928
         Suborder Myxillina Hajdu, van Soest & Hooper, 1994
           01 Family Chondropsidae Carter, 1886
           02 Family Coelosphaeridae Dendy, 1922
           03 Family Crambeidae Lévi, 1963
           04 Family Crellidae Dendy, 1922
           05 Family Dendoricellidae Hentschel, 1923
           06 Family Desmacididae Schmidt, 1870
           07 Family Hymedesmiidae Topsent, 1928
           08 Family Iotrochotidae Dendy, 1922
           09 Family Myxillidae Lundbeck, 1905
           10 Family Phellodermidae van Soest & Hajdu, 2002
           11 Family Tedaniidae Ridley & Dendy, 1886