Fig. 1. 



Fig. 1. — Outline map illustrating occurrences of Miocene and Pliocene 

 faunas in Tertiary provinces of the United States west of the Wasatch 

 Range, P, Panaca beds; M, Muddy Valley deposits; B, Barstow beds; 

 Re, Ricardo beds; C, Chanac formation E-T, Etchegoin-Tulare beds and 

 Merychippus zone; Or, Orinda beds; E, Esmeralda beds; CM, Cedar 

 Mountain beds, T, Truckee beds; MK, McKnight Miocene; V-T, Virgin 

 Valley and Thousand Creek beds; I, Idaho beds; Ir, Ironside Pliocene; 

 El, EUensburg formation. 



