SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



Fig. I. — Map of southwestern Wyoming and portions of adjacent States show- 

 ing Eocene basins of deposition, with fossil locaHties in Wasatch formation 

 numbered as follows: i, Red Desert; 2, Bitter Creek; 3, Four Mile Creek; 

 4, W. of Elk Mountain; 5, Fossil Butte; 6, Knight Station; 7, Tipton Butte; 

 8, La Barge; 9, Dad; 10, New Fork; 11, Cathedral Bluffs; 12, Oregon Buttes; 

 13, Rock Spring uplift (both flanks). (Map reproduced from Osborn, U. S. 

 Geol. Surv. Monogr. 55, figs. 9, 49, 1929.) 



