#genus_Cancer__Cancer  type genus of the family Cancridae
  supertype:  arthropod_genus  a genus of arthropods
  member of:  family_Cancridae
  member:  Cancer_magister__Dungeness_crab  small edible crab of Pacific coast of North America
  member:  rock_crab__Cancer_irroratus  crab of eastern coast of North America
  member:  Jonah_crab__Cancer_borealis  large red deep-water crab of the eastern coast of North America

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