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Organism
  Animalia
      Chordata
        Vertebrata
          Amniota
            Aves
                    Charadriiformes
                            Alcidae
                                     Alca
                                             Alca torda
                                               Alca torda torda
                                     Alle
                                             Alle alle
                                     Brachyramphus
                                             Brachyramphus perdix
                                     Fratercula
                                             Fratercula arctica
                                     Synthliboramphus
                                             Synthliboramphus antiquus
                                     Uria
                                             Uria aalge
                                             Uria lomvia
                                               Uria lomvia lomvia