Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       Order Haplosclerida Topsent, 1928
         Family Spongillidae Gray, 1867
           01 Genus †Eospongilla Dunagan, 1999
           02 Genus †Spongilla Lamarck, 1816
           03 Genus †Palaeospongilla Ott & Volkheimer, 1972
           04 Genus †Lutetia Finks & Rigby, 2004, orth. inval. see Genus Lutetiospongilla Richter & Wuttke, 1999
           05 Genus †Ephydatia Lamouroux, 1816
           06 Genus †Eunapius Gray, 1867
           07 Genus †Heteromeyenia Potts, 1881
           08 Genus †Meyenia Carter, 1881 see Genus Ephydatia Lamouroux, 1816
           09 Genus †Oncosclera Volkmer-Ribeiro, 1970
           10 Genus †Radiospongilla Penney & Racek, 1968