Geol.— Vol. II.] ANDERSON— CRETACEOUS DEPOSITS. 45 



The fauna here described is especially well represented 

 in the vicinity of Paskenta, Tehama County, where a few 

 localities have yielded most of the described species. Other 

 localities that have furnished a number of the species which 

 have been included in this list appear to belong to the same 

 horizon. One is a locality of white limestone along Sulphur 

 Creek, Colusa County, from which the following species 

 have been obtained : RhynchoneUa whitneyi, Modiola major, 

 Pecten coniplextcosta, Lucina coliisa'ensis, Atresius Ih-attis, 

 and Turbo cohisaensis. Other species from evidently the 

 same horizon in the near neighborhood may be added, as 

 Astarte trapezoidalis, Turbo morganensis, and Turbo 

 zvilburensis. 



The exact position of this limestone in the series of 

 AuceUa-\)^2iXm^ strata has not been determined, but it 

 appears to be interstratified with shales containing Aucella; 

 and since many of the same species have been found near 

 Paskenta, in thin layers and lenses of limestone, it seems 

 pretty evident that the same horizon is represented in both 

 localities, and that the strata of both belong near the top of 

 the upward range of Aucella. 



Southward of the Sacramento Valley scattered occur- 

 rences of yl?^c^//rt-bearing rocks are found of which but 

 little is yet known. One mile north of Berkeley, Alameda 

 County, Aucella and Belemnites have been found in dark, 

 sandy shales, and near by is a bed of light colored lime- 

 stone having a fetid odor, from which Dr. J. C. Merriam 

 and Charles Palache obtained Modiola major, Lucina cohi- 

 saensis, Pcctcn complexicosta, Cardinia (?), Myoconcha (?), 

 Turbo, Atresius liralus, and other forms resembling Pas- 

 kenta species. At the eastern edge of the town, almost in 

 the strike of these rocks, are sandy beds that will be 

 referred to again, and which Dr. Merriam regards as 

 undoubtedly of Chico age. 



Farther south, in the vicinity of Haywards, fossiliferous 

 shales occur from which was obtained a specimen of Crioc- 

 eras -percostatum, which is now in the collection of the 

 California Academy of Sciences. This locality is classed 

 as probably of the Knoxville (Paskenta) epoch. 



