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
           1 Genus †Clionolithes Clarke, 1908
           2 Genus †Runia Marek, 1984
           3 Genus †Palaeosabella Clarke, 1921
           4 Genus †Entobia Bronn, 1838
           5 Genus †Clionoides Fenton, 1932
           6 Genus †Filuroda Solle, 1938
           7 Genus †Cliona Grant, 1826
           8 Genus †Alectona Carter, 1879
           9 Genus †Thoosa Hancock, 1849