#spiny_softshell__spinysoftshell__Trionyx_spiniferus  river turtle of western United States with a warty shell; prefers quiet water
  supertype:  soft-shelled_turtle__pancake_turtle__pancaketurtle  voracious aquatic turtle with a flat flexible shell covered by a leathery skin; can inflict painful bites
  member of:  genus_Trionyx__Trionyx  type genus of the Trionychidae
     member of:  family_Trionychidae__Trionychidae  soft-shelled turtles
        member of:  order_Chelonia__Chelonia__Testudinata__order_Testudinata__Testudines__order_Testudines  tortoises and turtles
           member of:  subclass_Anapsida__Anapsida  oldest known reptiles: turtles; extinct Permian forms
              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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