Vol. 6] Merriam: Virgin Valley and Thousand Creek. 263 



33 



Figs. 30a and 30b. Merychippus, near isonesus (Cope). No. 11862, 

 natural size. Virgin Valley Beds, Virgin Valley, Nevada. Pig. 30a, 

 occlusal view; fig. 30b, outer view. 



Figs. 31a and 31b. Pliohippus(l) , sp. Superior molar. No. 12582, natural 

 size. Thousand Creek Beds, Thousand Creek, Nevada. Fig. 31a, posterior 

 side; fig. 316, occlusal view. 



Figs. 32a and 32b. Equus( ?), sp.; or Neohipparion(^), sp. Superior 

 molar. No. 12581, natural size. Thousand Creek Beds(l), Thousand 

 Creek, Nevada. Fig. 32a, outer side; fig. 32b, occlusal view. 



Fig. 33. MerychippuSf sp. Superior milk molars. No. 19412, natural 

 size. Soldier Meadows, Humboldt County, Nevada. 



