#genus_Fissurella__Fissurella  type genus of the family Fissurellidae: keyhole limpets
  supertype:  #mollusk_genus__molluskgenu  a genus of mollusks
  member of:  #family_Fissurellidae
  member:  #keyhole_limpet__keyholelimpet__Fissurella_apertura__Diodora_apertura  marine limpet having a conical shell with an opening at the apex

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