Kingdom Animalia Linnaeus, 1758 - animals
Phylum Porifera Grant, 1836 - sponges
Class Demospongiae Sollas, 1885 - demosponges
Order Halichondrida Vosmaer, 1887
1 Family Axinellidae Carter, 1875
2 Family Bubaridae Topsent, 1894
3 Family Dictyonellidae van Soest, Diaz & Pomponi, 1990
4 Family Halichondriidae Gray, 1867
5 Family Heteroxyidae Dendy, 1905