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 Subfamily †Heptatubispongiinae Rigby & Senowbari-Daryan, 1996