Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order Agelasida Hartman, 1980 1 Family Agelasidae Verrill, 1907 (1875) [monotypic] 2 Family Astroscleridae Lister, 1900