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 Ototyphlonemertidae Bürger, 1895
                  
 Genus Otonemertes
                    
 Otonemertes marcusi Corrêa, 1958