Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Hexactinellida Schmidt, 1870 - hexactinellids Subclass Amphidiscophora Schulze, 1886 1 Order Amphidiscosida Schrammen, 1924 f1 Order Amphidiscosa Schrammen, 1924 see Order Amphidiscosida Schrammen, 1924 f2 Order †Reticulosa Reid, 1958 f3 Order †Hemidiscosa Schrammen, 1924