Voz. IIT] ANDERSON—FURTHER STRATIGRAPHIC STUDY 15 
Turritella uvasana Gaps Trochosmilia sp. 
Dentalium cooperi Gasp Foraminifera, many sp. 
Cardium cooperi GABB Crustacea sp. 
Leda gabbi Conrap 
Higher in the same beds and a little farther south, W. L. 
Watts’ has collected: 
Discohelix leana Gasp Ficopsis cooperi Gass 
Turritella saffordi Gasp Tritonium californicum GaBB 
Turritella uvasana GABE Pectunculus sagitatus GABB 
A few miles north of this locality and near the Domengine 
ranch a hard sandy layer has yielded: 
Meretrix horni Gasp Turritella uvasana GABB 
Cardita veneriformis GABB Amauropsis alveata Gass 
Cardium cooperi Gasp Foraminifera (numuloid forms) 
Pectunculus sagitatus GABB Crustacea, etc. 
Tellina horni Gasp 
Along the Cantua this member of the series becomes more 
shaly toward the top, and the transition toward the succeeding 
member is not sharp but gradual. Farther south thin hard 
beds of sandstone mark the basal portion of the overlying 
shales, but they diminish in frequency higher up. 
Crystals and veinlets of selenite are abundant in many parts 
of this member. 
The Upper Shales —The uppermost member of the con- 
formable series that is here referred to the Eocene is one con- 
sisting almost entirely of shales, but containing some thin 
sandy beds near the bottom. On the Cantua creek east of the 
Lillis ranch house these shales are well exposed on the slopes 
and in the ravines on the north side of the stream. There is 
a total thickness of nearly 1800 feet, including some of the 
thin sandy beds near the top of the preceding member. They 
are divisible locally upon the basis of color and lithology into: 
Wishes chraikay tshiatlesi si, uct: a<0s Gee ae eeaeeeen: 800 feet 
JESTRONG Sas Le ke NSS er sk a AN ees ral LOCO" 
Their unconformity with the succeeding beds is apparent, 
both from the abrupt change from fine organic shales to coarse 
grained sands or even pebbly gravels, and from the fact that 
* Bull. no. 3, Calif. State Min. Bur. pp. 62 et seq. 
