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 Arthropoda Siebold, 1848 - arthropods
          
 Subphylum Crustacea Brünnich, 1772 - crustaceans
 see Superclass Crustacea Pennant, 1777
            
 Subclass Cirripedia Lamarck - barnacles and their kin
 see Infraclass Cirripedia Burmeister, 1834
              
 Order Rhizocephala Müller, 1862
 see Superorder Rhizocephala Müller, 1862
                
 Suborder Kentrogonida Delage, 1884
 see Order Kentrogonida Delage, 1884
                  
 Family Lernaeodiscidae Boschma, 1928
                    
 Genus Triangulopsis Döring, 1961
                      
 Triangulopsis abyssorum