Sept. 7 
Left Eureka, went across Monitor Range, past Potts to Mill Canyon 
(Wildcat Peak [[image of square]]). Here we saw thrust plates with 
Pogonip, Copenhagen. Copenhagen yellow platy Is of Pogonip type with 
[[underline]] Bimuria [[/underline]] upper Pogonip with Cryptolithoides 
Ampyxina and Robeigia. After collecting came in to Austin for the night. 
Sept. 8 
Spent all day in Ikes Canyon. Saw entire section. O. minuscula under 
sponge beds has a Toquimia-like shell. Between Rhysostrophia & 
Leptellina occurs plectambonitids. Leptellina zone has Pleurorthis. Went 
to Tonopah for night. 
G. Arthur Cooper - Field notes, 1 964 
Transcribed and Reviewed by Digital Volunteers 
Extracted Oct-12-2015 09:35:02 
Smithsonian Institution Transcription Center, Smithsonian Institution Archives 
