Hyracodon Upper Molar Section, Fossil, Badlands, South Dakota, Oligocene, R895

 
  
  

   Type: Fossil upper section from
   
    Hyracodon nebraskensis
   
   .  You can also see an interesting adult tooth still erupting from the maxilla.
  
  

   

  
  

   Weight: 7 ounces
  
  

   

   Locality: Private land in Pennington County, South Dakota
  
  

   

   Age: Oligocene, 30 Million Years Ago