BEGISTER OF LOCALITIES. 



523 



2240. Durango quadrangle; Hermosa formation. Same locality and horizon as 2238. 

 E. B. Mathews, 1894. 



2241. Durango quadrangle; Hermosa formation. Same locality and horizon as 2238. 



E. B. Mathews, 1894. 



2242. San Juan region; Hermosa formation. Lower end of Animas Park, on east side of river. 



Within the red sandstones, nearly 1,000 feet above its lower limits. 



F. M. Endlich, 1873. This locality appears to be described in U. S. Geol. Geog. Surv. Terr., 

 [8th] Ann. Kept., for 1874, 1876, p. 216. If the locality is^not the one described above, it is 

 probably that mentioned as station 49 (east side of Animas River at elevation 11,700 feet) 

 higher on the same page. 



2243. San Juan region; Hermosa formation. Lower end of Animas • Park, on east side of river. A 



short distance below the red sandstones. 

 F. M. Endlich, 1873. This locality is mentioned on the same page of the report cited above. 



2244. Elk Mountain region; Maroon formation. Near the head of Rock Creek. 



J. J. Stevenson, 1873. This locality seems to be bed 1 of Stevenson's section described on p. 

 362 of U. S. Geog. Geol. Surv. W. 100th Mer., Rept. , vol. 3, 1875. None of the fossils mentioned 

 have come to hand except Marginifera muricata and Seminula subtilita. 

 224.5. The only locality at present known is "Psifes from Rock to Rock Creek, Colorado." I can not 

 find that this collection has been mentioned in literature. 

 W. H. Holmes, 1876. 



2246. Durango quadrangle; Hermosa formation. East side of Animas River, opposite Hermosa 



Creek. Middle part of Hermosa formation. Same as 2335. 

 E. B. Mathews, 1894. 



2247. Engineer Mountain quadrangle; Hermosa formation. Animas section, near Cascade Creek, on 



Silverton road. Thin limestone series above supposed Devonian at the base of the Hermo^a 

 formation. 

 A. C. Spencer, 1898. 



2248. Engineer Mountain' quadrangle; Rico formation. Bottom jiortion of the formation in the 



vicinity of Hermosa Park. 

 Cross and Spencer. 



2249. Engineer Mountain quadrangle; Hermosa formation. Section on the south edge of the 



quadrangle. Middle part of the Hermosa formation. 

 Cross and Spencer. 



2250. Leadville district. Esmeralda mine. Prospect Mountain. Depth 100 feet. Fossils in sliale 6 



feet thick. Weber shale, base of the Weber formation. 

 E. Jacob. 



2251. Leadville district. Esmeralda mine, Prospect Mountain. Weber shale, base of the Weber 



formation. 

 E. Jacol). 



2252. Leadvillje district. Little Ella Hill. 



the Weber formation. 

 S. F. Emmons. 



2253. Leadville district. Little Ella Hill. 



the Weber formation. 

 S. F. Emmons. 



Central lode. Black shale fossils. Weber shale, base of 



Central lode. Black shale fossils. Weber shale, base of 



