Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       Order †Agelasida Hartman, 1980
         Family †Preperonidellidae Finks & Rigby, 2004
           1 Subfamily †Preperonidellinae Finks & Rigby, 2004
           2 Subfamily †Permocorynellinae Rigby & Senowbari-Daryan, 1996
           3 Subfamily †Precorynellinae Termier & Termier, 1977
           4 Subfamily †Heptatubispongiinae Rigby & Senowbari-Daryan, 1996