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 Calcarea Bowerbank, 1864 - calcareous sponges
           1 Order Homocoela see Order Leucosoleniida
           2 Order Heterocoela see Order Leucosolenida Hartman, 1958
           3 Order Pharetronida Zittel, 1878 see Subclass Pharetronidia