#viper  venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw
  supertype:  #ophidian__snake__serpent  limbless scaly elongate reptile; some are venomous
  subtype:  #common_viper  #asp_viper  #puff_adder  #gaboon_viper  #horned_viper  #pit_viper
  member of:  #family_Viperidae__Viperidae  Old World vipers
     member of:  #suborder_Serpentes__Serpentes__Ophidia__suborder_Ophidia  snakes
        member of:  #order_Squamata__Squamata  diapsid reptiles: snakes and lizards
           member of:  #subclass_Lepidosauria__Lepidosauria  diapsid reptiles: lizards; snakes; tuataras
              member of:  #class_Reptilia__Reptilia  class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
                 member of:  #subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                    member of:  #phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                       member of:  #kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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