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
           1 Family Aspidosiphonidae Baird, 1868
           2 Family Golfingiidae Stephen & Edmonds, 1972
           3 Family Phascolosomatidae Stephen & Edmonds, 1972
           4 Family Sipunculidae Rafinesque, 1814