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University of California Publications in Geology [Vol. 9 



Bullaria hornii (Gabb) 

 Cancellaria marysvillensis 



Naticina obliqua Gabb 

 Neverita globosa Gabb 

 Nyctilochus whitneyi (Gabb) 

 Surcula (Surculites) , cf. sinuata Gabb 

 Whitneya ficus Gabb 

 Serpula, sp. 

 Sbark(?) tooth 



Dickerson 

 Drillia cooperi, n. sp. 

 Fusinus calif ornicus (Gabb) 

 Fusinus, sp. 

 Lunatia hornii Gabb 



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

 Gabb. Sol en parallelus Gabb, Tellina longa Gabb, Bullaria hornii Gabb, 

 Cancellaria marysvillensis Dickerson, Fusinus calif ornicus (Gabb), 

 Naticina obliqua Gabb, Neverita globosa Gabb, Nyctilochus whitneyi 

 (Gabb), and Whitneya ficus Gabb are as far as known entirely typical 

 of the Tejon. 



This fauna is too meagre for an accurate zonal determination. 

 Drillia cooperi, n. sp., is the only form which has not as yet been 

 reported from the type Tejon of Grapevine Creek. This form occurs 

 at University of California Locality 1853 in the Marysville Buttes. 

 Practically all the rest are long-range forms except Whitneya ficus, 

 which has not as yet been reported from the Siphonalia sutterensis 

 zone. The fauna does not contain many of the typical species in the 

 Rimella simplex zone, and but one characteristic species of the 

 Siphonalia sutterensis zone. This horizon on this account is tenta- 

 tively placed in the Balanophyllia variabilis zone. 



The tables given below indicate the occurrence and distribution 

 of the forms which occur in the Tejon group of California. The local 

 occurrence of each species is given in the first major column and the 

 range of the species is indicated in the second. Four faunal zones 

 are recognized in the Tejon, a lowermost, the Turbinolia zone, then 

 the Rimella simplex zone, Balanophyllia variabilis zone and the 

 Siphonalia sutterensis zone, in order. These four zones do not occur 

 in any one locality unless all are represented in the Tejon north of 

 Coalinga, vicinity of Cantua Creek. In this locality the first three 

 appear to be present but the fauna which may represent the fourth 

 is too poor to lead to positive conclusions. The first three zones were 

 originally recognized in the area south of Mount Diablo and the 

 Siphonalia sutterensis zone in the vicinity of the Marysville Buttes 

 and at Oroville. The Rimella simplex zone is, however, more satis- 

 factorily shown at the type locality of the Tejon on Grapevine Creek. 



SUMMARY OF TEJON FAUNA OF CALIFORNIA 



