[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Porifera Grant, 1836 - sponges
     Class Demospongiae Sollas, 1885 - demosponges
       Subclass Homoscleromorpha Lévi, 1973 see Class Homoscleromorpha Dendy, 1905
         Order Homosclerophorida Dendy, 1905
           Family Plakinidae Schulze, 1880
             1 Genus Corticium Schmidt, 1862
             2 Genus Octavella Tuzet & Paris, 1963 see Genus Oscarella Vosmaer, 1884
             3 Genus Oscarella Vosmaer, 1884
             4 Genus Placinolopha Topsent, 1897
             5 Genus Plakina Schulze, 1880
             6 Genus Plakinastrella Schulze, 1880
             7 Genus Plakortis Schulze, 1880
             8 Genus Pseudocorticium Boury-Esnault, Muricy, Gallissian & Vacelet, 1995