BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 VOL. 4, PP. 245-256 JUNE 8, 1893 



THE FAUNAS OF THE SHASTA AND CHICO FORMATIONS 



BY T. W. STANTON 



(Read before the Society December 30, 1802) 

 CONTENTS 



Page 



Historical Review , 245 



Earliest Literature 245 



Views of W. M. Gabb 246 



The Tejon Controversy 246 



Work of the Canadian Geological Survey 248 



White's Classification of the California Cretaceous 249 



Relation of Shasta and Chico Faunas 241> 



Identity of Faunas indicated 24!) 



Local Lists of both Faunas from northern California 250 



Original Localities of Chico Fossils 253 



Faunas of Queen Charlotte and Nanainio Formations 253 



Correlation of Queen Charlotte Formation with the Shasta 253 



Correlation of Nanaimo Beds with the Chico 254 



The Shasta-Chico Fauna compared with the Fauna of the Blackdown Beds . . 254 



Conclusions 255 



Historical Review, 



Earliest Literature. — The earliest published opinion concerning the age 

 of the beds now known as the Chico formation seems to be that of Dr 

 J. B. Trask * who described Ammonites chicoensis and Baculites chicoensis 

 in 1856. On account of the modern aspect of the fossils associated will: 

 those species he referred the strata containing them to the upper Eocene. 

 Shortly afterward Professor J. S. Newberry f discussed the same beds, 



*Proe. Cal. Aead. Nat. Sci., vol. i, 1850, p. 85. 



t Pacific R. R. Reports, vol. vi, pt. 2 [1857?], pp. 24, 25. The title-page bears the date 1855, but there 

 is internal evidence that the volume was not published before 1857. 



XXXVII-Bui.l. Geoi.. Soc. Am., Vol. 4, 1892. (245) 



