1914] DicJcerson: Fauna of the Martinez Eocene of California 95 



This, taken together with a distinct faunal break and abrupt litho- 

 logical change, leads us to believe that a considerable time-interval 

 elapsed between the deposition of these two groups of the_ Eocene. 

 Only two fossil localities were found in the Tejon. The following 

 fauna was found at University of California Locality 785 : 



Crassatellites cf. uvasana (Gabb) 

 Dosinia elevata Gabb 

 Spisula, n. sp. 

 Meretrix ovalis Gabb 

 Meretrix, sp. 

 Meretrix hornii Gabb 

 Psammobia hornii (Gabb) 

 Solen parallelus Gabb 

 Tapes cf. cretacea Gabb 

 Tellina longa Gabb 

 Bulla hornii Gabb 

 Cancellaria marysvillensis Dicker- 

 son 



Drillia, n. sp. 



Fusus californicus Gabb 



Fusus, sp. 



Lunatia hornii Gabb 



Naticina obliqua Gabb 



Neverita globosa Gabb 



Surcula (surculites) cf. sinuata 



Gabb 



Tritonium whitneyi Gabb 

 Whitneya ficus Gabb 

 Serpula, sp. 

 Shark (?) tooth 



Of the forms listed above, Dosinia elevata Gabb, Meretrix ovalis 

 Gabb, Solen parallelus Gabb, Tellina longa Gabb, Bulla hornii Gabb, 

 Cancellaria marysvillensis Dickerson, Fusus californicus Gabb, Nati- 

 cina obliqua Gabb, Neverita globosa Gabb, Tritonium whitneyi Gabb, 

 and Whitneya ficus Gabb are as far as known entirely typical of the 

 Tejon. 



FAUNA OF THE MARTINEZ AT LOWER LAKE 



The preservation of the fossils in the Martinez near Lower Lake is 

 better than at most localities and their abundance at a few localities 

 make the collections from this place particularly valuable. Most of 

 the fossils were found in strata approximately five hundred to a 

 thousand feet above the base of this group. The following list of 

 species collected from these beds appear to belong in the same faunal 

 zone : 



LIST OF SPECIES 



Loc. 

 784 



Loc. 

 790 



Listed by 

 Stanton 



Stylophora(?), sp 



Flabellum remondianum Gabb 



Cidarid, sp 



Cidaris merriami Arnold X 



Membranipora(?), sp 



Rhynconella(?), sp X 



Terebratulina tejonensis Stanton x 



Crassatellites unioides (Stanton) 



