Crotalus oreganus (abyssus) | 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)
        
        Order Squamata
        
        Family Viperidae
        
        Genus Crotalus
        
        Species Crotalus oreganus (abyssus)
        
        Infraspecies Crotalus oreganus abyssus
        
        Infraspecies Crotalus oreganus caliginis
        
        Infraspecies Crotalus oreganus cerberus
        
        Infraspecies Crotalus oreganus concolor
        
        Infraspecies Crotalus oreganus helleri
        
        Infraspecies Crotalus oreganus lutosus
        
        Infraspecies Crotalus oreganus oreganus