242 



TEN YEARS PROGRESS IX VERTEBRATE PALEONTOLOGY 



14 



Wind Eiver to a point below the base of the Wasatch (Granger, 1910, 

 Sinclair and Granger, 1911, 1912) ; in other words, a sub- Wasatch fauna, 

 a nexus which may be diagrammatically expressed as on page 243. 



r 



hi 



z 



o 



o 



«< 



u 



z 



LJ 



-I D 

 Q^ 



Q 



c 



600' 



B 



350' 



DiplacodoTz 

 zone 



Diplacodon 

 <- Artlodacty/a and ch/ef collection 

 of Uinta mammals(small) 

 Dip/acodon 



; Dolichorhinus cornutus, 



chief foss'i life reus lei^el 



Amynodon 

 Eohasileizs 



zone Metarhinus 



Metarhinus 



Figure 7. — Middle and Upper Eocene of Uinta Basin, Utah. (Modified after Peterson) 



Upper : Diplacodon Zone 

 Middle : Eotasileus Zone 

 Lower: Uintatherium Zone 



" Walter Granger : Tertiary Faiinal Horizons of the Wind River Basin, Wyoming, with 



Descriptions of New Eocene Mammals. 

 History, July 16, 1910, pp. 235-251. 



Sinclair, W. J., and Granger, Walter 

 Bighorn Basins." Bull. Araer. Mus. Nat. 



Sinclair, W. J., and Granger, Walter: 



Basin," Bull. Amer. Mus. Nat. Hist., vol. sxxi, art. v, 1912 



Bulletin of the American Museum of Natural 



"Eocene and Oligocene of the Wind River and 

 Hist., vol. XXX, art. vii, 1911. 

 Notes on the Tertiary Deposits of the Bighorn 



