Xenops tenuirostris (slender-billed xenops) | CLASSIFICATION

Kingdom Animalia (animals)
- Eumetazoa (metazoans)
  - Bilateria (bilaterally symmetrical animals)
    - Deuterostomia (deuterostomes)
      - Phylum Chordata (chordates)
        
        Craniata (craniates)
        
        Subphylum Vertebrata (vertebrates)
        
        Superclass Gnathostomata (jawed vertebrates)
        
        Euteleostomi (bony vertebrates)
        
        Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates)
        
        Tetrapoda (tetrapods)
        
        Amniota (amniotes)
        
        Class Reptilia (turtles, snakes, lizards, and relatives)
        
        Class Aves (birds)
        
        Subclass Neognathae (neognath birds)
        
        Infraclass Neoaves (modern birds)
        
        Order Passeriformes (perching birds)
        
        Furnari (ovenbirds, antbirds, and relatives)
        
        Family Furnariidae (ovenbirds)
        
        Genus Xenops
        
        Species Xenops tenuirostris (slender-billed xenops)
        
        Subspecies Xenops tenuirostris acutirostris
        
        Subspecies Xenops tenuirostris hellmayri
        
        Subspecies Xenops tenuirostris tenuirostris