Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass Clavaxinellida Lévi, 1956 Order Clavulina Vosmaer, 1887 Family Clionaidae d'Orbigny, 1851 Genus †Entobia Bronn, 1838