176 CALIFORNIA ACADEMY OF SCIENCES [Proc. 30 Ser. 



in the case of the Reef Bed, from which the following species 

 have been obtained where the bed can be traced continuously 

 for two or three miles through Sec. 16, 21, and 20; T. 19 S., 

 R. 15 E. 



Reef Bed, Sec. 20 and Sec. 21 : 



'^ Astrodapsis iumidus Reniond * Tapes tenerrima Cpr. 

 *Arca montereyana (?) Osmont Lucina borealis Linn. 



* Dosinia ponderosa Gabb *Pseudocardium sp. 

 *Mactra {Spisula)/a/cata (?) Gould *Neverita recluziana Desh. 



Macoma inquinafa (?) Desh. Hemifusus sp. 



Mvtilus californianus Conrad * Trophon gabbiana n. sp. 

 *Pecten discus Conrad Trochita sp. 



Pec ten estrellanus Conrad Sharks' teeth 



The more characteristic of these species were found in the 

 Reef Bed of Sec. 20, T. 18 S., R. 14 E., including: 



*Pectefi discus Conrad * Dosinia po?iderosa Gabb 



* Astrodapsis Iumidus Remond 



A Stratum in the last section immediately above the white 

 shales, four hundred feet above the Reef Bed, contained the 

 following species and genera : 



Cytherea ( Callista) sp. Soleti sp. 



Chione (rel. C. guidia) Ostrea sp. 



Macoma nasuta Cpr. Agasoma kernianum Cooper 



Pecten estrellanus Conrad Turritella sp. 



Zirphaea dentata Gabb Cancellaria sp. 



Lucina borealis Linn. Trophon sp. 



Diplodonta harfordi n. sp. 



It is apparent that not onl}^ are the characteristic Reef Bed 

 fossils absent from this list, but there are some forms intro- 

 duced, as for instance the first two and nearly all of the 

 gasteropod species. 



The Oyster sands, with their associated gigantic Tamiosomay 

 Pecten, etc. are well developed on the N. E. Yx of Sec. 19, T. 

 18 S. , R. 14 E. , and can be easily followed toward the south- 

 east to the vicinity of the wells of the California Limited Oil 

 Company. 



Another feature of the basal portion of the Coalinga Beds 

 between Salt Creek on the north and the wells of the Cali- 



NoTE. In the above and following lists important or characteristic species are marked 

 with an asterisk. 



