Phylum Porifera Grant, 1836 - sponges
Count: -
   Subphylum Hexactinellida Schmidt, 1870 see Class Hexactinellida Schmidt, 1870
  Count: [*] 2c4o15f102g29s1ss
     Class Hexasterophora F.E. von Schulze see Subclass Hexasterophora Schulze, 1886
    Count: 3o12f91g26s1ss
       Order Lyssacinosida Zittel, 1877
      Count: 4f52g21s
         Family Caulophacidae Schulze, 1886 see Subfamily Lanuginellinae Gray, 1872
        Count: -
           Genus Caulophacus Schulze, 1886
          Count: 2s
             Caulophacus arcticus (Armauer Hansen, 1885)
            Count: -