PLATE VI 



MAP .SHOWING THE DISTRIBUTION OF THE MORRISON FORMATION 



Heavy black lines indicate actual outcrops. Oross-hatchins indicate areas 

 where the Morrison probably lies buried beneath younger beds. Dashes indi- 

 cate areas where the Morrison may or may not underlie younger beds. 



Note. — Since the preparation of tliis map. Dr. W. T. Lee bas informed the writer of 

 additional outcrops in New Mexico. 



