n. s. cKoi.onirAL survey 



MONOGRAPH 55 PLATE VIII 



A. NORTHWEST POINT OF HAYSTACK MOUNTAIN, HEAD OF BITTER CREEK, SWEETWATER COLINTY, WYO. 



Eohasileus-Dolichorhinus and Metarhinus aones (levels Washakie B 2 and B 1). (After Granger.) Am. Mus. negative 18213. (Se 



figs. 60 and 61) 



Wash-akyoe £ 



WasTtaJtie- A 



B. VIEW SOUTHEASTWARD FROM LACLEDE STATION ON OVERLAND STAGE TRAIL, SWEETWATER COUNTY, WYO. 



Lower brown sandstones of \Jiy\tat\\,^rium 2;one (level Washakie A) in middle di^ance. Hayrack Mountain and the Eobasileus' 



1 the background. (After Granger.) Am. Mus. negative 18223 



:i sandilonei 



of \Jiy\taihe.rium 5c 

 lis and Metarhinus : 



TYPICAL "WASHAKIE" FORMATION (LEVELS B 2 AND B 1 OVERLYING LEVEL A 1), WYOMING; 



MIDDLE AND UPPER EOCENE 



