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 Sipuncula Rafinesque, 1814 - peanut worms see Class Sipuncula
           Family Sipunculidae Rafinesque, 1814
             1 Genus Sipunculus Linnaeus, 1767
             2 Genus Siphonosoma Spengel, 1912
             3 Genus Siphonomecus Fisher, 1947
             4 Genus Phascolopis see Genus Phascolopsis Fisher, 1950
             4 Genus Phascolopsis Fisher, 1950
             5 Genus Xenosiphon Fisher, 1947