l88 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



SILVER PEAK GROUP (continued) : 



3d (continued) : Feet 



Trematobolus excelsis Walcott [1908c?, p. 80]. 



Hyolithes sp. 



Holmia rozvei, new species. 



Total of 3 1,875 + 



Total of section 5,670+ 



In this section the genus Olenellus is found extending through 4,900 feet of 

 strata and its lower limit is unknown. 



RfiSUMfi, WAUCOBA SPRINGS SECTION 



Feet Feet 



la. Limestone 525 



lb. Limestone 115 



ic. Limestone 60 



id. Arenaceous limestone 340 



1,040 



2a. Shales 35 



2&. Arenaceous limestone 120 



2C. Sandstone 125 



2d. Arenaceous limestone 105 



2e. Sandstone 365 



2f. Sandstone 155 



2g. Arenaceous limestone 25 



2h. Shale 120 



2J. Shale and sandstone 430 



2j. Sandstone and shale 485 



2k. Quartzitic sandstone 790 



2,755 



3a. Shales, limestone, and sandstone 650 



3&. Shaly sandstone 200 



3c. Arenaceous limestone and shaly sandstone 575 



2d. Hard sandstones 450+ 



-1,875 + 



Total 5,670+ 



BARREL SPRING SECTION 



• 



A section of Lower Cambrian strata studied by Mr. F. B. Weeks 

 near Barrel Spring, 16 miles south of the town of Silver Peak, 

 Nevada, is much like that east of Waucoba Springs, and has about 

 the same fauna at variousThorizons in it. 



Feet 

 I. Massive blue mottled limestone, with 50 feet of sandy limestone 



in the middle of the series 737 



Fauna: 



ArcJiccocyatliHS and allied forms occur througliout this 

 limestone. 



