Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       Order †Hadromerida Topsent, 1894
         1 Family †Celyphiidae de Laubenfels, 1955
         2 Family †Ceotinellidae Senowbari-Daryan, 1978 [monotypic]
         3 Family †Polysiphonidae Girty, 1909