South Dakota School or Mines 



Bulletin Xo. 13. Plate Xo. 42. 



A. Model of Promerycochoerus carrikeri. From a skeleton in the Car- 

 negie Museum. Peterson, 1914. 



B. The Lower Miocene hornless deer, Blastomeryx advena. Restored 

 from a skeleton in the American Museum of Natural History. W. B. 

 Scott. A History of Land Mammals in the Western Hemisphere. 

 1913. Published by The Macmillan Company. Reprinted by per- 

 mission. 



