life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Bilateria Hatschek, 1888 [paraphyletic?] - bilaterians
         Branch Protostomia Grobben, 1908 [paraphyletic?] - protostomes see Infrakingdom Protostomia Grobben, 1908
           Infrakingdom Lophozoa T. Cavalier-Smith, 1998 [paraphyletic?] see Infrakingdom Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake, 1995
             Superphylum Vermizoa T. Cavalier-Smith, 1984 ex T. Cavalier-Smith, 1998
               Phylum Annelida Lamarck, 1809 - segmented worms
                 Subphylum Echiura Sedgwick, 1898 see Phylum Echiura Sedgwick, 1898
                   1 Genus Urechis Seitz, 1907
                   2 Genus Bonellia Rolando, 1822