living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Pogonophora Johansson, 1937 - beard worms see Family Siboglinidae Caullery, 1914
           Class Frenulata see Family Siboglinidae Caullery, 1914
             Order Athecanephria A.V. Ivanov, 1955 see Family Siboglinidae Caullery, 1914
               Family Siboglinidae Caullery, 1914
                 1 Genus Siboglinum Caullery, 1914
                 2 Genus Siboglinoides Ivanov, 1961