Vor. IIT] ANDERSON—FURTHER STRATIGRAPHIC STUDY 11 
From other localities in the neighborhood, he adds: 
Cardium cooperi Gaze Lucina (?) cretacea Gasp 
Pecten interradiatus GaBp Mactra sp. undet. 
Modiola ornata Gaze 
To the south and east of Coalinga a narrow belt of Eocene 
beds can be followed for a distance of more than 15 miles, 
extending from certain tributaries of the Jacalitos creek east- 
ward to the vicinity of Dudley on the northern border of the 
Sunflower valley. These beds appear again near the Point of 
Rocks on the northern border of the Antelope valley, from 
which locality several Tejon forms have been obtained and 
listed. To the south of the Antelope valley the Eocene beds. 
can be followed without difficulty as far as Temblor, if not 
farther toward the southern extremity of the range. They 
appear again crossing the canyon of the San Emidio and can 
be followed from there eastward to the Tejon ranch. 
Among other characteristics of the Eocene rocks, at least 
on the eastern side of the range, is the presence of beds of 
lignitic coal, or in some cases of carbonaceous clays, particu- 
larly in places where the Eocene section is greatly reduced. 
Almost all the coal veins reported along the valley side of the 
range, and some on the opposite side, are in Eocene strata. 
Like the Cretaceous, the Eocene rocks are in evidence to 
a far greater extent upon the eastern than upon the western 
slope of the range, though they are known upon both. 
North of the Straits of Carquinez, the Eocene has been 
noted as far as Upper Lake, Lake county, though its contin- 
uity is not known to be complete. 
Stratigraphy of the Eocene——In the vicinity of Martinez, 
the Eocene strata have been divided into two groups, mainly 
upon the basis of their faunas, and have been classed accord- 
ingly as Martinez and Tejon. The older, or Martinez, por- 
tion has been made the subject of a special study by Dr. J. C. 
Merriam’* and by Chas. E. Weaver, while the Eocene series, 
as a whole, has been clearly separated from the Chico by Dr. 
TW. Stanton,” 
1 Journ. Geol. v. 5, no. 8, pp. 767-774. 
2 Bull. Dept. Geol. Univ. Calif. v. 4, no. 5, pp. 101-123, 
3U. S. Geol. Surv. 17th Ann. Rept. pt. 1, pp. 1011-1049. 
