Phylum Porifera Grant, 1836 - sponges
   Class Demospongiae Sollas, 1885 - demosponges
     Order Agelasida Hartman, 1980
       1 Family Agelasiidae Verrill, 1907 see Family Agelasidae Verrill, 1907 (1875)
       2 Family Astroscleridae Lister, 1900