#family_Pteriidae__Pteriidae  pearl oysters
  supertype:  #mollusk_family__molluskfamily  a family of mollusks
  member of:  #class_Bivalvia
  member:  #genus_Pinctada__Pinctada  pearl oysters
     member:  #pearl_oyster__pearloyster__Pinctada_margaritifera  tropical marine bivalve found chiefly off eastern Asia and Pacific coast of North and Central America; a major source of pearls

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