RECENT DISCOVERIES AND DETERMINATIONS OF EOSSILS. 247 



on the probability of this being Lower Carboniferous. The writer visited 

 the place in October, 1893, and collected L. ivhitneyi, Fusulina cylindrical 

 Eametria, Spirifer cameratus (?), AviciUopecten (?), Conocardium (?) and 

 many round crinoid stems. In diabase-tuff just above the limestone 

 was found a Productus, possibly P. semireticulatus. This fauna is proba- 

 qly equivalent to that of the upper part of the McCloud river imestone, 

 which lies a thousand feet or more above the Lower Carboniferous sili- 

 ceous shales of Baird, Shasta county, and thus would in all probability 

 represent the lower part of the Coal Measures. 



Spanish Creek and Clermont Peak, Plumas County. — A letter from Mr H. 

 W. Turner, September 13, 1893, says that Mr T. W. Stanton has collected 

 Fusulina cylindrica and other Carboniferous forms from a locality on 

 Spanish creek one mile east of Spanish ranch ; also corals, et cetera, prob- 

 ably Paleozoic, from the limestone on Rock creek, about a mile and a 

 half northwest of summit of Clermont peak. The writer visited these 

 localities, and on Spanish creek found Lithostrotion whitneyi, Favosites, 

 Campophyllum (?) and numerous round crinoid stems. On Rock creek 

 he found a Campophyllum and crinoid stems. There can be no doubt 

 that both localities are of Carboniferous age. 



Bear Mountain^ Ccdaveras County. — H. W. Turner* says that the United 

 States Geological Survey has found Fusulina cylindrica, Zaphrentis, and 

 round crinoid stems in the limestone of Bear mountain and in the con- 

 tinuation of this belt northward. In November, 1893, the writer found 

 also a Mlchelinia in the limestone of a quarry on A. R. Young's place, 

 five miles northeast of Valley springs. James E. Mills also collected 

 a Zaphrentis from a quarry in township 5 north, range 11 east, section 32, 

 northeast quarter of southeast quarter, on the road between Campo Seco 

 and Mokelumne hill. 



Peniz Ranch, Butte County. — J. D. Whitney t assigns these limestones 

 to the Carboniferous, while James E. Mills % refers them to the lower 

 Mesozoic, but without any paleontologic evidence. The writer failed to 

 find any brachiopods, but found a Favosites and Archseocidaris, and 

 numerous very large round crinoid stems which resemble Poteriocrinus. 



TRIASSIC LOCALITIES. 



Oscar Tunnel, Plumas County. — J. S. Dillerg includes this locality in 

 his Cedar formation, the equivalent of the Hosselkus limestone, Upper 

 Trias, of the Genesee valley. In a letter of August 13, 1893, Mr Diller 

 announces the discovery of Ammonites, Pentacrinus and other fossils in 



* Am. Geologist, vol. xi, p. 309. 



fGeol. of California, vol. i, p. 210. 



X Bull. Geol. Soc. Am., vol. .3, p. 434. 



§Geol. Atlas, U. S. Geol. Survey, Lassen Peak Sheet. 



