Phylum Porifera Grant, 1836 - sponges Class Hexactinellida Schmidt, 1870 - hexactinellids Subclass Hexasterophora Schulze, 1886 Order Hexactinosa Schrammen, 1903 see Order Hexactinosida Schrammen, 1903 Family Farreidae Gray, 1872 Genus †Farrea Bowerbank, 1862 Subgenus †F. (Farrea) Bowerbank, 1862