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 †Pharetrospongiidae de Laubenfels, 1955 1 Subfamily †Pharetrospongiinae de Laubenfels, 1955 2 Subfamily †Leiofungiinae Finks & Rigby, 2004