Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
   Phylum Nemertea Schultze, 1851 - ribbon worms
     Neonemertea Thollesson & Norenburg, 2003
       Hoplonemertea Hubrecht, 1879 see Order Hoplonemertea Hubrecht, 1879
         Monostilifera see Suborder Monostilifera Brinkmann, 1917
           Distromatonemertea Thollesson & Norenburg, 2003
             1 Family Carcinonemertidae Sumner, Osburn & Cole, 1913
             2.1 Family Tetrastemmatidae Hubrecht, 1879
             2.2.1 Genus Nemertopsis Bürger, 1895
             2.2.2.1 Genus Zygonemertes Burger, 1895
             2.2.2.2.1 Family Ototyphlonemertidae Bürger, 1895
             2.2.2.2.2 Genus Poseidonemertes Kirsteuer, 1967
             2.2.3.1.1 Family Prosorhochmidae Bürger, 1895
             2.2.3.1.2 Family Malacobdellidae Blanchard, 1847
             2.2.3.2.1.1 Genus Gurjanovella Uschakov, 1926
             2.2.3.2.1.2 Emplectonema gracile (Johnston, 1837)
             2.2.3.2.2.1 Emplectonema buergeri Coe, 1901, nom. corr.
             2.2.3.2.2.2.1.1 Amphiporus imparispinosus Griffin, 1898
             2.2.3.2.2.2.1.2 Amphiporus formidabilis Griffin, 1898
             2.2.3.2.2.2.2.1.1 Paranemertes sanjuanensis Stricker, 1982
             2.2.3.2.2.2.2.1.2 Paranemertes peregrina Coe, 1901
             2.2.3.2.2.2.2.2.1 Paranemertes sp. 249
             2.2.3.2.2.2.2.2.2.1 Amphiporus lactifloreus (Johnston, 1828)
             2.2.3.2.2.2.2.2.2.2 Amphiporus angulatus (Müller, 1774)