46 



THE WHITE RIVER BADLANDS 



?™ Porcupine Butte 

 Volcanic ash layer 



Bfestomeryx 



ParahJppus 



Cyriodestnus 



Phlaocyon 



Oligobunis* 



Metycochcerus % eg f" f 1 « 



zone Oxydacty/us 



Desmathyus 

 Protomeryx 

 Merycochcerus 

 Merychyus (abundant) 

 Aelurocyon 

 lei bedsVV Jrctoryctis 



: -9: : oSao-/.i>-.p^ Cntoptycni/s 



Lepus 



■ VACa lcar'eous shaly 



■:/p- '•'.''•'.•'. •":'.'.'■ ci?.'. •'.' .'v imestone layers 



'.: •£)'■'• '■ •' ; ' ' ' '•'■' •'•'•■>-rS v - v^;'( rromerycochoerus 



^ Promery- (yery abundant 

 cochoeros and characteristic) 

 zone Diceratherium 

 E/otherium 

 Steneofiber 

 Hypertragufus 

 e"d:':o^ Parahippus(smal/sp) 



'B.gy^a*^— ^rr- ^r-r^K Leptauchenia 



Nimravus 

 Moropus 

 Dinohyus 

 Mcsorcpdor; 



BR lTl^f - ":^^^^ ^ 1 ^^"^^^^ go taiicnJemd'z <*ne 



Figure 13 — Columnar section from Porcupine Butte northward to- 

 ward White river as observed by Matthew and Thomson in 1906. 

 Osborn, 1912. 



The beds form the upper part of the series of bluffs 

 south of White river on the Pine Eidge and Eosebud Eeser- 

 vations, and are exposed in the upper part of the various 

 tributary creeks."* 



For a section of these beds see Figure 13, from U. S. 

 Geol. Survey Bulletin No. 361, p. 70, Cenozoic Mammal 

 Horizons of Western North America, etc., by Osborn and 

 Matthew. 



*Matthew, W. D. A Lower Miocene Fauna from South Dakota. 

 Am. Mus. Nat. Hist., Bull., Vol. 23, 1907, pp. 169-219. 



