Porifera Grant, 1836 - sponges Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Clavaxinellida Lévi, 1956 Protomonaxonida Finks & Rigby, 2004 †Choiidae de Laubenfels, 1955 †Choiaella Rigby & Hou, 1995