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 Polystilifera Brinkmann, 1917
                 Tribe Pelagica Brinkmann, 1917
                   Subtribe Eupelagica
                     1 Family Chuniellidae Brinkmann, 1917
                     2 Family Dinonemertidae Brinkmann, 1917
                     3 Family Pachynemertidae Coe, 1954
                     4 Family Phallonemertidae Brinkmann, 1917
                     5 Family Planktonemertidae Brinkmann, 1917
                     6 Family Protopelagonemertidae Coe, 1926