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          .
        
        
          Sauropods were the heaviest, longest,
        
        
          and tallest animals ever to walk on
        
        
          land. They were herbivores, and
        
        
          would have had to graze continually.
        
        
          Sauropods
        
        
          How many neck vertebrae does the
        
        
          
            Diplodocus
          
        
        
          have?
        
        
          
            192
          
        
        
          
            Age of the dinosaurs
          
        
        
          
            Tiny-brained eating machines
          
        
        
          Sauropods had tiny heads compared
        
        
          to their bodies. Peg-shaped
        
        
          teeth were used to pull
        
        
          up vegetation.
        
        
          
            Look at the size of it!
          
        
        
          Imagine a dinosaur that was
        
        
          as long as a tennis court – an
        
        
          adult
        
        
          
            Diplodocus
          
        
        
          was!
        
        
          
            Around the world
          
        
        
          Sauropods have
        
        
          been found all
        
        
          over the world.
        
        
          
            
              Mamenchisaurus
            
          
        
        
          grew to
        
        
          22 m (72 ft) in length in
        
        
          Jurassic China.
        
        
          
            
              Camarasaurus
            
          
        
        
          reached a
        
        
          monstrous 23 m (75 ft) in
        
        
          Jurassic North America.
        
        
          
            
              Barapasaurus
            
          
        
        
          grew to
        
        
          lengths of 18 m (59 ft) and
        
        
          roamed Jurassic India.
        
        
          
            
              Vulcanodon
            
          
        
        
          was just 6.5 m
        
        
          (21 ft) when it prowled
        
        
          Jurassic Zimbabwe.
        
        
          
            Stones in the gut
          
        
        
          Like other sauropods,
        
        
          
            Diplodocus
          
        
        
          swallowed
        
        
          stones to help break
        
        
          down tough plant fibres.
        
        
          
            Gizzard
          
        
        
          
            stones
          
        
        
          
            Adult human
          
        
        
          
            skeleton
          
        
        
          Gizzard
        
        
          Peg-shaped
        
        
          teeth.
        
        
          
            Diplodocus
          
        
        
          
            skull
          
        
        
          
            Diplodocus
          
        
        
          
            skeleton