Phylum Porifera Grant, 1836 - sponges
   Class Demospongiae Sollas, 1885 - demosponges
     Order †Permosphincta Termier & Termier, 1974
       Suborder †Porata Seilacher, 1962
         01 Family †Ascosymplegmatidae Boiko, 1991
         02 Family †Angullongiidae Webby & Rigby, 1985
         03 Family †Annaecoeliidae Senowbari-Daryan, 1978 see Family Tebagathalamiidae Senowbari-Daryan & Rigby, 1988
         04 Family †Cheilosporitiidae Senowbari-Daryan & García-Bellido, 2002 see Family Cheilosporitidae Fischer, 1962
         05 Family †Colospongiidae Senowbari-Daryan, 1990
         06 Family †Cryptocoeliidae Steinmann, 1882
         07 Family †Cystothalamiidae Girty, 1908
         08 Family †Deningeriidae Boiko, 1991 see Subfamily Solenolmiinae Engeser, 1986
         09 Family †Gigantothalamiidae Senowbari-Daryan, 1994
         10 Family †Intrasporeocoeliidae Fan & Zhang, 1985
         11 Family †Palermocoeliidae Senowbari-Daryan, 1990
         12 Family †Phragmocoeliidae Ott, 1974
         13 Family †Polysiphonellidae Belyaeva, 1991
         14 Family †Polytholosiidae Seilacher, 1962 see Subfamily Polytholosiinae Seilacher, 1962
         15 Family †Salzburgiidae Senowbari-Daryan & Schäfer, 1979
         16 Family †Sebargasiidae de Laubenfels, 1955 (1882)
         17 Family †Sphaeroverticillitidae Boiko, 1991 see Family Thaumastocoeliidae Ott, 1967
         18 Family †Solenolmiidae Engeser, 1986
         19 Family †Tebagathalamiidae Senowbari-Daryan & Rigby, 1988
         20 Genus †Alaskaspongia Rigby, Potter & Blodgett, 1988, incertae sedis
         21 Genus †Platysphaerocoelia Boiko, 1991, incertae sedis
         22 Genus †Solidothalamia Sheng, 1991, incertae sedis
         23 Genus †Stylocoelia Wu, 1991, incertae sedis