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 Lyssacinosida Zittel, 1877 Family Rossellidae Schulze, 1885 1 Subfamily Rossellinae Schulze, 1885 2 Subfamily Acanthascinae Schulze, 1897 3 Subfamily Lanuginellinae Gray, 1872