#genus_Plesiosaurus  a reptile genus of suborder Plesiosauria
  supertype:  #reptile_genus__reptilegenu  a genus of reptiles
  member of:  #suborder_Plesiosauria
  member:  #plesiosaur__plesiosaurus  extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous

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