1919] Merriam: Tertiary Mammalian Faunas of Mohave Desert 437e 



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

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

 B, Barstow beds; Re, Ricardo beds; C, Chanac formation; ET, 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; Rt, Rattlesnake 

 Pliocene and Mascall Miocene; El, Ellensburg formation. 



