Phylum Porifera Grant, 1836 - sponges
Count: -
   Class Calcarea Bowerbank, 1864 - calcareous sponges
  Count: [o] 5o; †1o
     1 Order †Heteractinida Hinde, 1887 see Class Heteractinida de Laubenfels, 1955
    Count: †1f
     2 Order Clathrinida Hartman, 1958
    Count: -
     3 Order Murrayonida Vacelet, 1981
    Count: -
     4 Order Leucosolenida Hartman, 1958
    Count: -
     5 Order Lithonida Döderlein, 1892
    Count: -
     6 Order Baerida Borojevic, Boury-Esnault & Vacelet, 2000
    Count: -
     7 Order †Sphaerocoelida Vacelet, 1979 see Order Sphaerocoeliida Vacelet, 1979
    Count: -