#family_Mytilidae__Mytilidae  marine mussels
  supertype:  mollusk_family__molluskfamily  a family of mollusks
  member of:  class_Bivalvia
  member:  genus_Mytilus__Mytilus  type genus of the family Mytilidae: smooth-shelled marine mussels
     member:  edible_mussel__Mytilus_edulis  dark-shelled edible mussel that lives attached to rocks
  member:  marine_mussel__mytilid  marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones

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