Hyracodon Lower Tooth, Fossil, South Dakota Badlands, Oligocene, R1087

 
  
  

   
    Type:
   
   Fossil lower tooth from
   
    Hyracodon nebraskensis
   
   .
  
  

   

   
    Locality:
   
   Private land in Pennington County, South Dakota
  
  

   

   
    Age:
   
   Oligocene, 30 Million Years Ago