Vol. V] DICKERSON— FAUNA OF THE TYPE TEJON 47 



W., Mt. S. B., B. L. and M. on north side of a branch of Sah 

 Creek 150 feet above bottom. R. E. D. 541. Cohs., B. Par- 

 sons and R. E. Dickerson. 



465. Mt. Pinos Quadrangle. Tejon group. Vicinity of 

 Salt Creek. S. E. % of N. W. Ya of Sec. 32, T. 10 N., R. 20 

 W., Mt. S. B., B. L. and M., 25 feet below hilltop and 75 feet 

 below white Miocene conglomerate. R. E. D. 543. Colls., 

 B. Parsons and R. E. Dickerson. 



COWLITZ PHASE OF TEJON GROUP. 



STRATIGRAPHY. 



Dr. Weaver described the Cowlitz phase as follows : "In 

 southern Lewis County, east of Little Falls, there exist shales 

 and shaly limestones containing a fauna seemingly older than 

 the typical Tejon, but more closely related to it than to the 

 Martinez or lower Eocene of California. A very large num- 

 ber of the species are new and th® fauna may represent a trans- 

 ition from the Martinez to the Tejon — a fauna which as yet 

 is unknown in California. In order to distinguish this from 

 the typical Tejon, the term Cowlitz formation is suggested. 



The Cowlitz formation contains the following fauna : 



PELECYPODA 



Barbatia morsei Gabb Meretrix olequahensis, n.sp. 



Cardium breweri Gabb Ostrea fettkei, n.sp. 



Cardium cooperi Gabb Pecten cowlitzensis, n.sp. 



Corbula, sp. Placunanomia inornata Gabb 

 Crassatella washingtoniana, Venericardia alticosta Gabb 



n.sp. Venericardia planicosta Lam- 



Crassatella cowlitzensis, n.sp. arck. 



GASTROPODA 



Ancillaria bretzi, n.sp. Fusus washingtoniana, n.sp. 



Cassidaria washingtoniana, Galerus excentricus Gabb 



n.sp. Hemifusus sopenahensis, n.sp. 



Conus cowlitzensis. n.sp. Hemifusus cowlitzensis, n.sp. 



Cylichna costata Gabb Hemifusus lewisensis, n.sp. 



Fusus lewisensis, n.sp. Hemifusus tejonensis, n.sp. 



Fusus dickersoni, n.sp. Hemifusus washingtoniana, n.sp. 



