no. 8 SMITHSONIAN EXPLORATIONS, I913 19 
500 and 600 separate fossil bones were obtained, many of them of 
large size. The most notable discovery was a new Ceratopsian’ or 
horned dinosaur, the smallest of its kind known. There were por- 
tions of five individuals of this animal recovered, representing nearly 
all parts of the skeleton, so that it will be possible to mount a com- 
posite skeleton for exhibition. In this connection, it is perhaps of 
interest to know that, although Ceratopsian fossils were first dis- 
Fic. 20.—Fossil beds as exposed on Milk River, Montana. The small 
Ceratopsian dinosaur was found in the breaks in the foreground. Photo- 
graph by Gilmore. 
covered in the Rocky Mountain region in 1855, and portions of a 
d, 
hundred or more skeletons have been collected, this is the first indi- 
vidual to be found having a complete articulated tail and hind foot. 
It thus contributes greatly to our knowledge of the skeletal anatomy 
of this interesting group of extinct reptiles. 
Another noteworthy find was a partial skeleton of one of the 
Trachodont or duck-billed dinosaurs. This animal was only recently 
‘Mr. Gilmore’s description of this extinct reptile is to be found in the 
Smithsonian Misc. Coll., Vol. 63, No. 3, 1914. 
