Phylum Porifera Grant, 1836 - sponges Class Calcarea Bowerbank, 1864 - calcareous sponges Order †Sphaerocoelida Vacelet, 1979 see Order Sphaerocoeliida Vacelet, 1979 Family †Sphaerocoeliidae Steinmann, 1882 1 Genus †Sphaerocoelia Steinmann, 1882 2 Genus †Thalamopora Römer, 1840 3 Genus †Barroisia Munier-Chalmas, 1882