10 



SMITHSONIAN INSTITUTION 



Fig. 9. — Antelope Range south-southwest of Eureka, Nev. 



Fig. 10. — T 



«..• : -^ ..,_. - •■■■ 



md Range northeast of Eureka after an early snowstorm. 



Fig. 11. — Foothills just west of Spotted Range and east of Frenchman Flat, 

 northwest of Las Vegas, Nev. Ordovician collecting locality in foreground 

 at base of mountains. 



