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



289 



Figs. 68a and 686. Sphenophalos or Ilingoceros, sp. P 3 to M 1 . No. 

 12613, natural size. Thousand Creek Beds, Thousand Creek, Nevada. 

 Fig. 68a, inner view; fig. 68b, occlusal view. 



Figs. 69a and 695. Sphenophalos or Ilingoceros, sp. Upper molar. No. 

 ]2605, natural size. Thousand Creek Beds, Thousand Creek, Nevada. 

 Fig. 69a, outer view; fig. 696, occlusal view. 



Fig. 70a and 706. Sphenophalos nevadanus Merriam(f). M 3 . No. 

 12610, natural size. Thousand Creek Beds, Thousand Creek, Nevada. 

 Fig. 70a, inner view; fig. 706, occlusal view. 



Figs. 71a and 716. Sphenophalos or Ilingoceros. Inferior molar. No. 

 12604, natural size. Thousand Creek Beds, Thousand Creek, Nevada. 

 Fig. 71a, outer view; fig. 716, occlusal view. 



Fig. 72. Sphenophalos nevadanus Merriam(?). Outer side of M 3 . No. 

 19418, natural size. Thousand Creek Beds, Thousand Creek, Nevada. 



