#American_smooth_dogfish__Mustelus_canis  found along the Atlantic coast of the Americas
  supertype:  smooth_dogfish  small bottom-dwelling shark found along both Atlantic coasts
  member of:  genus_Mustelus__Mustelus  smooth dogfishes
     member of:  family_Triakidae__Triakidae  small smooth-skinned sharks lacking spines on dorsal fins
        member of:  subclass_Elasmobranchii__Elasmobranchii__Selachii__subclass_Selachii  sharks; rays; dogfishes; skates
           member of:  class_Chondrichthyes__Chondrichthyes  cartilaginous fishes
              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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