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 Hexactinellida Schmidt, 1870 - hexactinellids
           1 Order Hexasterophora Schulze, 1887 see Subclass Hexasterophora Schulze, 1886
           2 Order Amphidiscophora Schulze, 1887 see Subclass Amphidiscophora Schulze, 1886