Geological Papers. 221 



Utterback several years ago, is the most perfect known, and is also 

 new to science. 



But all these specimens sink into insignificance compared to the 

 one Charlie found of aTrachodo7i on the South Branch of Schneider 

 creek, twenty miles northwest of Warren. He had had no success 

 whatever, and when we made sport of it he always said that when 

 he did find anything it would be better than anything so far found 

 in the Laramie; and he proved to be a true prophet. There was a 

 little patch of ground on the head of South Schneider we had not 

 explored, and, owing to my discovery of a Triceratop's skull within 

 a mile or so of this region, Charlie took advantage of the oppor- 

 tunity, and, with Levi, drove over to it, while I went on to the 

 camp at the bone bed across the river, on the head of Crooked 

 creek. He discovered the last sacral vertebra and one hind limb 

 of a Trachodon sticking out of a high ledge of grey sandstone. On 

 September 4 last we moved our camp over to this specimen. Our 

 outfit consisted of four horses, a heavy lumber wagon, also a buggy 

 and saddle, with tents and camp equipage. It took Charlie and 

 George, with the assistance of Mr. Lon Galbreath, of Warren, over 

 two months to take up and transport this specimen to Edgemont, 

 S. D., where it is now stored awaiting a purchaser; it weighs about 

 10,000 pounds. I remained with my party until we had uncovered 

 it, cut it in sections, and wrapped them securely with burlap soaked 

 in plaster. One section weighed over 3000 pounds. After days of 

 toil removing the sandstone above the floor on which our duck-bill 

 lay buried, we find the following facts: He had sunk to his death 

 in a bed of quicksand, and the entire skeleton is present except one 

 hind limb and the end of the tail. Five and a half feet of the 

 caudal vertebrae are present, continuous with the sacrum, making 

 seventeen and a half feet altogether, including the complete trunk 

 region. And more wonderful still, the whole skeleton is in the 

 normal position at death, with ribs expanded about five feet across 

 the abdominal walls, and the entire carcass is covered with the skin 

 impressions. When the flesh decayed, and before the ligaments 

 that held the bones in proper alignment one with another had dis- 

 integrated, the scales had left impressions on the yielding sand. 

 As the flesh slowly decayed and was carried off by water, it was re- 

 placed with sand that took the impression of the skin upon it; so 

 that at last the entire body as it was in death was here reproduced. 

 The front limbs were drawn upwards along the sides of the body 

 as the carcass slowly sank in the quicksand. The head, four feet 

 long, was elevated as if gasping for breath, and the hind foot has 



