LOCALITIES. 225 



144c. (For stratigrapliic position and association, seep. 147.) Middle Cambrian: Limestone near the top of the 

 beds exposed near N. K. Biirns's barns, near Viola, Blount County, Ala. (Cooper Curtice, 1892). 

 Dicellomus appalachia. 



145. (For stratigraphic position and association, see p. 147.) Middle Cambrian: Shale in bluff on Coosa River east 

 of Turkeytown, 8 miles (12.8 km.) northeast of Gadsden, Etowah County, Ala. (Diddle and Russell, 1886). 



Lingulella similis. 



146. (For stratigraphic position and association, see p. 147.) Middle Cambrian: Conasauga ("Coosa") shale on 

 the Jacksonville road, 8 miles (12.8 km.) east of Center, Cherokee County, Ala. (Biddle, 1883). 



Obolus willisi. 



147a. Upper Cambrian: Limestone in Spring Hill Canyon, west side of the Bridger Range, Gallatin Coimty, Mont. 

 (A. C. Peale, 1885). 

 Billingsella coloradoensis. 



148a. Upper Cambrian: Limestone of the Gallatin formation at the head of Bostwick Canyon (the name is given 

 on the Threeforks sheet (U. S. G. S.)) [Iddings and Weed, 1894, areal geology sheet «], in the Bridger Range, 

 Livingston quadrangle (U. S. G. S.), Gallatin County, Mont. (A. C. Peale, 1885). 

 Obolus tetonensis. 



149a. Middle Cambrian: Limestone at the forks of Pole Creek, above Cherry Creek basin, Threeforks quadrangle 

 (U. S. G. S.), Madison County, Mont. (A. C. Peale, 1887). 

 Micromitra (Iphidella) pannula. 

 *Billingsella striata. 



150a. Upper Cambrian: Limestone on the east side of Dry Creek, above the mouth of Pass Creek, about 5 miles 

 (8 km.) north of Hillsdale, Threeforks quadrangle (U. S. G. S.), Gallatin County, Mont. (A. C. Peale, 1885). 

 Billingsella plicatella. 

 Eoorthis wichitaensis. 



151 (see 151a). Upper Cambrian: Limestone in point overlooking Chum Canyon, on the west side of the Bridger 

 Range, Gallatin County, Mont. (A. 0. Peale, 1885). 

 Obolus discoideus. 

 Billingsella plicatella. 

 Eoorthis wichitaensis. 



151a (a little higher horizon than 151, same locality). Upper Cambrian: Limestone in point overlooking Chum 

 Canyon, on the west side of the Bridger Range, Gallatin County, Mont. (A. C. Peale, 1885). 

 Dicellomus pectenoides. 

 Billingsella plicatella. 



162. Upper Cambrian: Limestone on ridge between Chum and Cottonwood canyons, west side of Bridger Range, 

 Gallatin County, Mont. (A. C. Peale, 1885). 

 Billingsella plicatella. 

 Eoorthis desmopleura?. 



152a. Upper Cambrian: Limestone on west side of Dry Creek, below Pass Creek, Threeforks quadrangle (U. S. 

 G. S.), Gallatin County, Mont. (A. C. Peale, 1885). 

 Dicellomus nanus. 



152b. Upper Cambrian: East side of Dry Creek, below Pass Creek, Threeforks quadrangle (U. S. G. S.), 

 Gallatin County, Mont. (A. C. Peale, 1885). 

 Obolus tetonensis?. 



153 (slightly different horizon than 153a). Upper Cambrian: Limestone in ravine on west side of Dry Creek, near 

 the mouth of Pass Creek, about 5 miles (8 km.) north of Hillsdale, Threeforks quadrangle (U. S..G. S.), 

 Gallatin County, Mont. (A. C. Peale, 1885). 



Billingsella plicatella. 



Huenella abnormis. 



153a (slightly different horizon than 153). Upper Cambrian: Limestone in ravine on west side of Dry Creek, near 

 the mouth of Pass Creek, about 5 miles (8 km.) north of Hillsdale, Threeforks quadrangle (U. S. G. S.), 

 Gallatin County, Mont. (A. C. Peale, 1885). 



Eoorthis remnicha. 



Eoorthis remnicha texana. 



Eoorthis wichitaensis. 



a Iddings, J. P., and Weed, W. H., Livingston folio (No. 1), Geol. Atlas U. S., U. S. Geol. Survey, 1894. 

 62667°— VOL 51, pt 1—12 15 



