South Dakota School of Mines 



Bulletin No. 13. Plate No. 41. 



A. Agriochoerus antiquus. Restored from a skeleton in the American 

 Museum of Natural History. W. B. Scott. A History of Land Mam- 

 mals in the Western Hemisphere, 1913. Published by The Macmil- 

 lan Company. Reprinted by permission. 



Leptauchenia nitida. Restored from a skeleton in the American 

 Museum of Natural History. W. B. Scott. A History of Land Mam- 

 mals in the Western Hemisphere. 1913. Published by The Macmil- 

 lan Company. Reprinted by permission. 



