CAMBRIAN CORDILLERAN SECTIOXS WALCOTT 187 



SILVER PEAK GROUP (continued) : 



2/ (continued) : Feet 



Near Resting Springs, in the Kingston Range, and at about 

 this horizon, Mr. R. B. Rowe collected the following : 

 Billingsella highland ensis (Walcott) [1886, p. 119]. 

 Hohnia xvecksi, new species. 

 Olcnellus fremonti, new species. 



2k. Gray and brownish gray quartzitic sandstones in layers 6 inches 



to 3 feet in thickness 790 



Fauna: 



Annelid trails on the surface of the layers. 



Total of 2 2,755 



3a. At summit a band of bluish gray limestone, with sandstones 

 and occasional layers of thin-bedded limestone below. At 

 290 feet down a band of arenaceous limestone 50 feet thick 

 occurs. Below this, brown sandstone and sandy shales, 

 with interbedded thin layers of limestone in the lower 100 

 feet 650 



Fauna (430 feet from the base) : 

 Numerous fragments of Olcnellus. 



Zb. Argillaceous and sandy shale, with a few thin beds of limestone 200 



Fauna (160 feet from base) : 

 Obolella, sp. undt. 

 Trematoholus excelsis Walcott [1908J, p. 80]. 



3c. Alternating arenaceous limestones, shales, and dirty brown 



sandstones that break into angular blocks and fragments... 575 



Fauna (275 feet from base) : 

 ArchcBocyathus is very abundant. 



2,d. Shaly indurated sandstones, with a few thicker layers of 



almost quartzitic sandstone 45°+ 



Fauna (on west slope of hill just east of the summit, where 

 the Saline Valley wagon road passes down the slope 

 toward Waucoba Springs) : 



Annelid trails. 



Cruziana. 



Trematoholus excelsis Walcott [i9o8cf, p. 80]. 



Hohnia rozvei, new species. 



Fauna (on the east side of the hill and in lower portion 



of 3^) : 

 Archceocyathus. 



Ethmophyllum gracile Meek [1868, p. 62]. 

 Mickzdtzia occidens Walcott [i9o8(/, p. 54]. 

 Obolella, sp. undt. 



