8 



SMITHSONIAN INSTITUTION 



skeleton was made. The considerable number of individuals present 

 here is attested by the fact that nine dentaries (lower jaws) were 

 found in this one spot. The fossils were in an excellent state of 

 preservation and form a good study series. The quarry was not yet 

 exhausted when it was decided to discontinue further work here. 



All of the area on the north side of the river having been inspected 

 by July I, our activities were transferred 50 miles to the south to 

 exposures along the Two Medicine River. This area of badlands from 

 the viewpoint of a fossil collector was the most promising-looking 

 ground that we had encountered. The country was deeply dissected, 



Fig. 4. — Collecting dinosaur Imuhs nn the Blackfect Indian Reservation, 

 Montana. (Phulograph by G. F. Sternberg.) 



the surfaces were free from vegetation, and there were many low- 

 lying, rounded exposures — precisely the conditions that give promise 

 of easy and profitable collecting. Much to our disappointment, how- 

 ever, in the 10 days spent here, only one specimen worth collecting 

 was found — a partial skeleton, including parts of the skull, of a duck- 

 billed dinosaur. 



The Two Medicine formation was particularly disappointing in the 

 lack of articulated specimens, for inasmuch as this formation is re- 

 garded by geologists as in part equivalent in age to the Belly River 

 formation of the Red Deer River region some 150 to 200 miles to 

 the north, from which numerous articulated skeletons have been ob- 

 tained, I was led to hope that equally well-preserved specimens might 



