THE LARGEST FLESH-EATING DINOSAUR 
and fewer herds of cattle, we arrived at 
the little log post-office Jordan. 
A few miles beyond this point at the 
head of the small streams tributary to 
the Missouri River, the prairie abruptly 
changes to a panorama of wonderful 
bad lands; a wilderness of variegated 
sculptured cliffs and domes intersected 
by deep cafions with scattered pine trees 
and pockets of junipers; while on the 
hillsides in the broader valleys, lines of 
cottonwoods mark the stream courses. 
The dullness of the denuded earth is 
relieved by bright-colored clay in bands 
traceable on the same level for miles. 
Hard globular sandstones of all sizes are 
scattered among the layers of sand, and 
groups of them cluster the slopes of the 
hills. 
We established camp on Hell Creek 
near the old Max Sieber ranch, where 
the first bones had been discovered. 
Nearby, the stream has cut into a hill 
exposing rounded sandstones, many of 
273 
which have rolled down to the water. 
Some of the stones contained bones and 
we traced them up the hillside by broken 
pieces until the original position of the 
layer was located. Here in the buff- 
colored sand half way up the hill we 
found the first skeleton of Tyranno- 
saurus lying in the position in which it 
had been interred and petrified millions 
of years ago. 
The skeleton was disarticulated and 
scattered on the same level and almost 
every bone was separately enclosed in a 
bluish sandstone as hard as granite. 
The loose surface sand was easily re- 
moved but below the frost line the hard 
cemented mass was almost unyielding 
to a pick. The area over which the 
bones were scattered and the almost 
vertical slope of the hill necessitated 
removal of a vast amount of material. 
With additional help, plows, scrapers 
and dynamite we attacked the task, 
carving off slices of the hillside down to 
SKELETON RECENTLY MOUNTED IN THE AMERICAN MUSEUM 
The successive expeditions under Mr. Barnum Brown in the Cretaceous of Montana and Alberta 
have secured for the Museum a large series of dinosaur skeletons representing all the principal types of 
this period. The Tyrannosaurus mount is regarded as the finest piece of work in this line which has yet 
been accomplished. The articulation and pose are the result of prolonged and thorough studies and 
criticism, and the mechanical problems have been solved and managed with great skill and a clear 
appreciation of the artistic and scientific concept which was to be executed. 
The mounting was done 
by Mr. Charles Lang under the direction of Professor Henry Fairfield Osborn and the scientific staff of 
the department of vertebrate paleontology 
