Geological Papers. 45 



EXPEDITIONS TO THE MIOCENE OF WYOMING AND 

 THE CHALK BEDS OF KANSAS. 



By Charles H. Sternberg. 



ON July 28 I reached ray station at Edgemont, S. D. The next 

 day I drove out to my son Charlie's cabin, thirty-five miles 

 west, on Old Woman creek, in Converse county, Wyoming. I found 

 that, with the assistance ot my youngest son, Levi, and Conrad 

 Jesperson, of Lawrence, he had secured a complete series of caudal 

 vertebra? and bones of the pelvis and hind limbs of the great 

 swimming dinosaur Trachodoti ; and three-quarters of a fine skull, 

 six and a half feet long, of Triceratops, the huge three-horned lizard 

 of the Laramie. The Trachodon material has gone to Munich to 

 complete a composite open mount, I having sent the other material 

 last year. The magnificent skeleton secured last year by my son 

 Charlie went to the Senckenberg Museum. I believe these are the 

 only complete skeletons of American dinosaurs in Europe. The 

 seven-foot skull I discovered last year of Triceratops, which I was 

 preparing for the Victoria Memorial Museum, was destroyed last 

 year when the brick walls of the building at (317 Vermont street, 

 in which it was housed, was blown in on top of it by a cyclone — a 

 great loss to science and myself. 



Having gone over the Laramie beds thoroughly during the last 

 four years, on the fourth of August we moved over to the old de- 

 serted Seaman ranch on Sage creek, a branch of Old Woman creek, 

 in Converse county, Wyoming. These beds are known as the 

 Upper Harrison beds. The first day in this rich field that has 

 been but little explored, I discovered the skeleton of the great 

 titanothere Brontotherium gigas. The pelvic arch was partly ex- 

 posed and measured four feet across the illia; the complete skull; 

 vertebral column, with ribs continuous to first caudal; one humerus, 

 and other bones. The lower limbs were absent. This specimen, 

 according to Doctor Matthew, curator of vertebrate palaeontology 

 in the American Museum of Natural History, New York, is the 

 best single specimen known, and is the size of their mounted com- 

 posite specimen that measures over twelve feet long and about 

 eight feet high. We are now preparing this noble specimen for the 

 Victoria Memorial Museum at Ottawa, Canada, and will secure 

 casts of the feet from the Ameriban Museum specimen. 



