Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order †Hadromerida Topsent, 1894 Family †Ceotinellidae Senowbari-Daryan, 1978 [monotypic] 1 Genus †Ceotinella Pantić, 1975