Plate 37. A. Restoration of Archaeotherium ingens. 



B. Restoration of Dinohyus hollandi. 

 " 38. Restoration of Elotherium (Entelodon) imperator. 

 " 39. Skeleton of Merycoidodon (Oreodon) gracilis. 

 " 40. Restoration of Merycoidodon (Oreodon) culbertsoni. 

 " 41. A. Restoration of Agriochoerus antiquus. 



B. Restoration of Leptauchenia nitida. 

 " 42. A. Restoration of Pr ornery cochoer us carrikeri. 



B. Restoration of Blastomeryx advena. 

 " 43. Skeleton of Protoceras celer. 

 " 44. Restoration of Protoceras celer. 

 " 45. Restoration of Syndyoceras cooki. 

 " 46. Restoration of Poebrotherium labiatum. 

 " 47. A. Daemonelix and Daemonelix Beds. 



B. Head of Crocodilus prenasalis. 

 " 48. A. A petrified birds egg. 



B. The turtle, Stylemys nebrascensis. 

 " 49. Types of Sioux Indians. 



" 50. Hall of Fossil Mammals American Museum Natural History. 

 " 51. Geological Museum, South Dakota State School of Mines. 

 " 52. Sand-calcite crystals from Devils Hill. 

 " 53. A. White River near Interior. 



B. Cheyenne River near mouth of Sage Creek. 

 " 54. A. Suncracked surface of an alluvial flat. 



B. Spongy surface of disintegrating Titanotherium clay. 

 " 55. A. The early day postoffice of Interior. 



B. An early day cowboy home in Corral Draw. 

 " 56. A. A ranch home near the Great Wall. 



B. The beginning of a farm near the Great Wall. 

 " 57. A. Detail of the Great Wall, near Interior. 



B. The Great Wall at Cedar Pass. 

 58. A. Cattle in the Badlands. 



B. The 6L Ranch near Imlay. 

 " 59. A. Geology class in Indian Creek Basin. 



B. Geology class at top of Sheep Mountain. 

 " 60. A. The water canteen. 



B. The steep road near the Hines ranch. 

 " 61. A. A resistant clay dike. 



B. An erosion pinnacle. 

 " 62. A. Geology class in School of Mines canyon. 



B. Midway down School of Mines Canyon. 

 " 63. A. The Great Wall near Big Foot Pass. 



B. South side of Sheep Mountain. 



C. Steep walled canyon near Sheep Mountain. 

 " 64. A. Early day School of Mines camping ground. 



B. School of Mines students on Sheep Mountain Table. 

 " 65. A. Balanced rock on the Great Wall. 



B. Balanced rock near head of Indian Draw. 



