#family_Littorinidae__Littorinidae  periwinkles
  supertype:  #mollusk_family__molluskfamily  a family of mollusks
  member of:  #class_Gastropoda
  member:  #genus_Littorina__Littorina  type genus of the family Littorinidae: periwinkles
     member:  #periwinkle.seasnail__winkle  edible marine gastropod

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