HELL CREEK BEDS, CERATOPS BEDS AND EQUIVALENTS 1 99 



A few fragmentary remains of vertebrates have been found in the 

 Glendive area. Thus, Barnum Brown" records having found the 

 weathered fore Hmb of a Triceratops "in the badlands near Glen- 

 dive at an elevation of about 50 feet above the railroad track," which 

 would bring its position at about 275 to 300 feet above the top of 

 the Pierre. He also adds that "several other fragments of Triceratops 

 andTrachodont dinosaurs were seen in this locality but not sufficiently 

 preserved for specific determination." 



In the bluffs just east of Glendive Dr. A. C. Peale and the writer 

 secured, in 1907, fragmentary remains of turtles and a single mam- 

 mal jaw near the base of the bluff, and remains of turtles and frag- 

 ments of a large dinosaur at a point about 100 feet above the base. 

 It is probable that more careful search in this vicinity would disclose 

 the presence of other localities for vertebrate remains, of which 

 we heard vague rumors from the residents. 



9. GLENDIVE, MONTANA, TO MEDORA, NORTH DAKOTA. 



The lower member only of the Fort Union is exposed in the imme- 

 diate vicinity of Glendive, the beds dipping at a very slight angle to 

 the northeast, and it is 12 or 15 miles down the Yellowstone and some 

 miles back from the river, before the yellow beds of the upper mem- 

 ber appear. Thus in the valley of lower Seven Mile Creek, which 

 enters the Yellowstone from the north about 10 miles below Glendive, 

 one first passes from near the level of the stream over the dark sandy 

 shales and clays of the lower member for a distance of 6 or 8 miles 

 before the yellow sands and sandy clays of the upper member appear 

 in the bluffs on either side. • Probably about 15 miles to the east 

 (the exact point was not noted) of Glendive the lower member has 

 disappeared and the upper member is the surface formation, a con- 

 dition continuing probably to the valley of the Little Missouri River. 

 Sentinel Butte, North Dakota, which rises 650 feet above the level 

 of the plain in which it stands is entirely in the upper beds (except 

 for a very thin capping of supposed Oligocene containing fish re- 

 mains), as are at least the upper portions of the bluffs bordering the 



'* Bull. Am. Mus. Nat. Hist., vol. 23, 1907, p. 823. 



