NEOCENE STRATIGRAPHY. 



337 





o 

 o 



o 

 <1 



CD 



a* 



CD 



o 



o 



o 



g 



a' 



CD 



9 



a 



O 



a 



CD 



1-i 



CO 



$ 



•-i 



m 

 <^ 



a 

 * 



5' 



* 

 * 



t! 



era 



CD 

 13* 

 CD 



Area microdonta Conrad 







Cardium meekiauum Gabb 





* 





Cidaris sp. iud 



Crasatella colliua Conrad ?. . . 



* 





Crepidnla grandis Middendorf 







* 







Dosina ponderosa Gray 



* 



* 



s. 



Glycimeris generosa Gould 





Lucina borealis Linnseus 



Lucina nuttalli Conrad 



* 







s.n. 



Lunatia lewisii Gould . . 









* 



1 





Macoma nasuta Conrad .... 









Nassa californica Conrad ... . 











Neptunea recurva Gabb 











Pecten islandictis Miiller 



* 







n. 



Pecten latiauritas Conrad 



s. 



Saxidomus gibbosns Gabb? 



Schizothceris nuttalli Conrad 





Solen siccarius Gould 







* 



~ 



Standella californica Conrad 





* 







Standella planulata Conrad ? . . . . . 







# 

 * 





Tapes stamiuea Conrad ... . 













Tapes tenerrima Carpenter 













Terabratella caiirina ? 



» 







* 





Mactra (not Venus) pajarcensis Conrad 





Yoldia impressa Conrad 





* 







s. 









Out of the twenty-five species given seven are extinct, 

 not counting the questionable cases, and six are known 

 living only to the north or south. That is, out of twenty- 

 five fossil species eleven are found in the present fauna 

 of this part of the coast or 44%. The fossils in this area 

 though abundant are very poor, seldom showing sculpt- 

 ure and generally much distorted; the determinations are 

 therefore in many cases somewhat questionable. 



Merced Series at San Fernando Pass. — At the San Fer- 

 nando tunnel in Los Angeles county, the beds that have 

 been considered as Miocene of the Monterey series are 



2d See., Vol. V. ( 22 ) August 1, 1895. 



