Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Clavaxinellida Lévi, 1956
       Order Protomonaxonida Finks & Rigby, 2004
         Family †Leptomitidae de Laubenfels, 1955
           1 Genus †Leptomitella Rigby, 1986
           2 Genus †Leptomitus Walcott, 1886
           3 Genus †Paraleptomitella Chen, Hou & Lu, 1989
           4 Genus †Wareiella Rigby & Harris, 1979