Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Parazoa (Sollas, 1884) see [unranked] Parazoa (Sollas, 1884)
       Phylum Spongia
         Class Demospongiae Sollas, 1885 - demosponges
           Order Tetraxonida
             Suborder Sigmatophora
               Family Tetillidae Sollas, 1886
                 Genus [Tetilla] Schmidt, 1868
                   1 Tetilla cranium (O.F. Mueller, 1776)