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 Anopla see Phylum Nemertea Schultze, 1851
             Order Palaeonemertea Hubrecht, 1879 see Phylum Nemertea Schultze, 1851
               Family Cephalothricidae McIntosh, 1874
                 Genus Cephalothrix Oersted, 1843
                   Cephalothrix linearis (J. Rathke, 1799)