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 †Aphrosalpingidae Myagkova, 1955 Subfamily †Vesicocauliinae Senowbari-Daryan, 1990 1 Genus †Russospongia Senowbari-Daryan, 1990