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       

              6                             
                                          
      2008   5   1                           
                              
  
             
               
          Ⅰ   
         
                  
     
  
                  
       
       
  
        
1:1            
三角龍           
       
  
  易碎雙腔龍            
披毛犀           
  
             
       （Ⅱ）  
  
                 
  
       
       
               
  
  
  
                 
                 
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