Porifera Grant, 1836 - sponges Hexactinellida Schmidt, 1870 - hexactinellids Hexasterophora Schulze, 1886 Hexactinosa Schrammen, 1903 see Order Hexactinosida Schrammen, 1903 Pileolitoidea Finks, 1960 †Pileolitidae Finks, 1960 †Pileolites Finks, 1960