Crandall — Santa Clara Valley Region in California. 



Art. IV. — The Cretaceous Stratigraphy of the Santa Clara 

 Valley Region in California ; by Roderic Crandall. 



Introduction. 

 Localities and faunas. 



Table showing the geographical distribution of the fauna. 

 The Horsetown horizon. 



Distribution in central California. 



Absence south of Arroyo del Valle. 



Cause of absence in soul hern California. 



Movements during the Cretaceous period. 



Introduction. 



In this paper are recorded the various collections of fossils, 

 from the Cretaceous, that have been found in the vicinity of 

 Santa Clara Valley, and at Mt. Diablo, which is east of this 

 immediate region. The distribution of the three horizons of 

 the Cretaceous in this region are discussed, with reference to 

 their relations elsewhere. 



Localities and Faunas. 



In the vicinity of the Santa Clara Valley, there are many 

 localities where Cretaceous fossils have been found. These 

 places are given below in geographical order. 



1. North Berkeley. 



2. Mt. Diablo. 



3. Haywards. 



4. East of Decoto. 



5. Pleasanton region. 



6. Jordan's Ranch, Arroyo del Valle. 



7. Crossby Ranch, Arroyo del Valle. 



8. Milpitas. 



9. Beryessa Canyon. 



10. Alum Rock Canyon. 



11. Evergreen. 



12. Dry Creek, five miles southeast of Evergreen. 



13. Whitney Ranch near Gilroy. 



14. New Almaden. 



15. Pigeon Point. 



16. Stevens Creek. 



171 Stanford University. 

 18. Belmont. 



The accompanying outline map shows the position of these 

 localities in the central portion of California. 



North Berkeley. — One mile north of Berkeley, in a locality 

 which comprises less than a square mile, the following Cretace- 

 ous fossils have been collected. 



Am. Jour. Sci. — Fourth Series, Vol. XXIV, No. 139 — July, 1907. 



