#family_Chelydridae__Chelydridae  snapping turtles
  supertype:  reptile_family__reptilefamily  a family of reptiles
  member of:  order_Chelonia
  member:  snapping_turtle  large aggressive freshwater turtle with powerful jaws
  member:  genus_Chelydra__Chelydra  snapping turtles
     member:  common_snapping_turtle__snapper__chelydraserpentina  large-headed turtle with powerful hooked jaws found in or near water; prone to bite
  member:  genus_Macroclemys__Macroclemys  alligator snapping turtles
     member:  alligator_snapping_turtle__alligator_snapper__alligatorsnapper__Macroclemys_temmincki  large species having three ridges on its back; found in southeastern United States

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