RECONNAISSANCE IN COLORADO AND UTAH 659 
a Triassic crocodile, Heterodontosuchus ganei Lucas (24) with fossil 
wood in limestone conglomerate near the base of the Dolores forma- 
tion. Gane was familiar with this formation and traced it to Clay 
Hill from southwestern Colorado. The beds are apparently con- 
tinuous westward to Glen Canyon of the Colorado about 20 miles. 
This observation of Gane is most important as bringing what I think 
can be unhesitatingly considered to be the fossiliferous zone of the 
Dolores formation into the heart of the Plateau country. Actual 
Fic. 8.—View in canyon of Grand River about 12 miles above ferry at Moab, 
Utah. Looking west across river; to show angular unconformity at base of Dolores 
Triassic beds. Cliffs of columnar rock are formed of Vermilion Cliff sandstone. 
Beds beneath unconformity are considered to belong to Permian ( ?). 
demonstration of the relation of the Clay Hill fossil-bearing conglom- 
erate to the Shinarump conglomerate is yet to be furnished. 
One can scarcely question that Powell, Dutton, Walcott, and 
others have applied the name Shinarump conglomerate to a single 
bed or formation commonly less than 100 feet thick, as far as the 
country west of the Colorado is concerned, from the mouth of Paria 
Creek to the vicinity of St. George, Utah. No fossils have been found 
