1913] Dickerson: Fauna of Eocene at Marysville Buttes 265 



Dosinia elevata Gabb 



Glycimeris cor Gabb 



Glycimeris marysvillensis, n.sp. 



Leda gabbi Conrad 



"Mysia polita Gabb 



Meretrix(f), sp 



*Meretrix hornii Gabb 



Nucula cooperi, n.sp. 



Ostrea idriaensis Gabb 



Solen parallelus Gabb 



Tapes conradiana Gabb 



fTellina sutterensis, n.sp 



^Sehizaster leeontei Merriam 



Trochoeyathus striatus Gabb 



Trochocyathus( ? ) perrini, n.sjj. . 



Cancer, sp 



Nodosaria, sp 



Synechodus, sp 



Mt. 



Marysville Diablo Near 



Buttes Region Fort Tejon Other localities 

 XXX.. 



x New Idria, 

 Coalinga 



x Coalinga 



Bathymetric Relations of the Fauna 

 Dr. Cooper 8 in discussing two collections of fossils made by 

 Watts from the San Joaquin Coal Mine near Coalinga, Fresno 

 County, and Marysville Buttes incidentally states his ideas con- 

 cerning the bathymetric conditions under which this fauna was 

 deposited as follows : " It is certain at least that the two localities 

 from which Mr. W. L. Watts obtained the specimens described, 

 furnished no Ammonitidae but this may be explained on the 

 theory that they represent shallow water deposits close to a 

 seashore or estuary, in which large quantities of vegetable mat- 

 ter from the land were accumulated. Both the probable habits 

 of the species found at the coal mines near Huron, Fresno 

 County (as compared with nearly related species), and the pres- 

 ence of coal in the rocks containing them, point to such a con- 

 clusion, and the occurrence of many of the same species, to- 

 gether with a thin bed of coal somewhat further away, indicate 

 that the species from Marysville Buttes inhabited a similar but 

 somewhat deeper sea." 



8 Cooper, J. G., Catalogue of California Fossils, Bull. No. 4, California 

 State Mining Bureau, p. 36. 1894. 



