Phylum Porifera Grant, 1836 - sponges Subphylum Hexactinellida Schmidt, 1870 see Class Hexactinellida Schmidt, 1870 Class Hexasterophora F.E. von Schulze see Subclass Hexasterophora Schulze, 1886 Order Lychniscosida Schrammen, 1903 1 Family Aulocystidae Sollas, 1887 see Family Neoaulocystidae Zhuralevleva, 1962 2 Family Dactylocalycidae Gray, 1867