[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 Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
         Order Hadromerida Topsent, 1894
           Family Tethyidae Gray, 1867
             1 Genus Halicometes Topsent, 1898
             2 Genus Tethya Lamarck, 1814