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 Nemertea Schultze, 1851 - ribbon worms
           Class Enopla Schultze, 1851
             Order Hoplonemertea Hubrecht, 1879
               Suborder Monostilifera Brinkmann, 1917
                 Family Amphiporidae McIntosh, 1874
                   Genus Amphiporusᵀ Ehrenberg, 1831
                     Subgenus Intestinonemertes
                       1 Amphiporus (Intestinonemertes) islandicus
                       2 Amphiporus (Intestinonemertes) punnetti
                       3 Amphiporus (Intestinonemertes) septentrionalis
                       4 Amphiporus (Intestinonemertes) appendiculatus
                       5 Amphiporus (Intestinonemertes) iwatai Friedrich, 1970
                       6 Amphiporus (Intestinonemertes) arcticus