Phylum Porifera Grant, 1836 - sponges
Subphylum Hexactinellida Schmidt, 1870
see Class Hexactinellida Schmidt, 1870
Class Hexasterophora F.E. von Schulze
see Subclass Hexasterophora Schulze, 1886
Order Lyssacinosida Zittel, 1877
Family Caulophacidae Schulze, 1886
see Subfamily Lanuginellinae Gray, 1872
Genus Caulophacus Schulze, 1886
Caulophacus arcticus (Armauer Hansen, 1885)
Caulophacus latus F.E. von Schulze, 1886