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 1 Class †Archaeocyatha Bornemann, 1884 2 Class Calcarea Bowerbank, 1864 - calcareous sponges 3 Class Hexactinellida Schmidt, 1870 - hexactinellids 4 Class Demospongiae Sollas, 1885 - demosponges