WALcorr.] PALEONTOLOGY ROCKY MOUNTAINS. 165 



Iii a " Note on the geology of the Selkirk Range, " of British Colum- 

 bia, Dr. George M. Dawson states that the Olenellus fauna has been 

 found 3,000 feet down in the Bow Kiver series. 1 He refers the Niscon- 

 lith, and the lower 15,000 feet of the Selkirk series, of the Selkirk sec- 

 tion, to the Cambrian, and correlates them with the Bow River and lower 

 portion of the Castle Mountain series of the % western side of the Rocky 

 Mountains. (The details of these series are given in chapter iv, of this 

 paper.) 



PALEONTOLOGY. 



The first description of Cambrian fossils from the Rocky Mountain 

 province is that by Mr. F. B. Meek, in 1868, who described from the 

 material discovered by Mr. Clayton at Silver Peak, Nevada, Ethmophyl- 

 lum whitneyi and E. gracile. 2 Shortly after he changed the reference 

 of these species to Archaeocyathus, making A, whitneyi and A. gracile? 

 In 1870 he added Paradoxidesf nevadensis and Gonoeoryphe (Conocepha- 

 lites) kingi, from Antelope Spring, Nevada. From the known position 

 of the genus Conocephalites the two species were referred by him to the 

 Primordial zone. 4 



In 1872 Prof. J. D. Whitney calls attention to the occurrence of the 

 Primordial fauna near Eureka, Nevada, at a locality discovered by 

 Mr. J. E. Clayton. He identified a species closely related to Agraulos 

 oweni of Meek and Hayden, and fragments of the genera Conocoryphe, 

 Parad oxides, Lingulepis, and Obolella. 5 A notice of this discovery was 

 also published in the proceedings of the California Academy of Sci- 

 ences in the same year. (Vol. 4, p. 200.) 



From the Upper Cambrian rocks of southeastern Idaho and southern 

 Montana, Mr. F. B. Meek described in 1873 Iphidea ft sculptilis (p. 479), 

 Agnostics bidens (p. 463), Conocoryphe (Conocephalites) gallatinensis (p. 

 485), Bathyurus t haydeni (p. 482), B. serratus (p. 480), Bathyurellus 

 (Asapkiscus) bradleyi (p. 484), Bathyuriscus wheeleri (p. 485, foot-note). 

 It is stated on page 465 that Bathyuriscus (Dikelocephalus f) truncatus 

 is described in the report. It does not, however, appear in the text. 

 He also identified the species Acrotreta subconica Kutorga (A. atten- 

 uata proposed if it proved to be a distinct species, p. 463), Hyolithes 

 grcgaria M. & H., Camerella calcifera Billings, and Agnostus josepha, 

 Hall. Numerous generic references are made from the fragments in the 

 collection, and in the lists from various localities species of the Calcif- 

 erous zone of the Lower Silurian (Ordovician) occur, especially in the 

 list of the collection from Malade City. 6 



1 Bull. Geol. Soo. America, vol. 2, 1891, p. 171. 



u Preliminary notice of a remarkable new gennsof Corals, probably typical of a new family, * * * 

 from the Silurian rocks of Nevada Territory. Am. Jour. Sci., 2d ser., vol. 45, 1868, pp. 62-64. 



3 Note on Ethmophyllum and Archaeocyathus Am. Jour. Sci., 2d ser., vol. 46, 1868, p. 144. 



4 Meek, F. B.: Descriptions of fossils collected by the U. S. Geological Survey, under the charge of 

 Clarence King, esq. Phil, Acad. Sci. Proc, vol. 22, 1870, pp. 62-64. 



•Note on the occurrence of the " Primordial Fauna " in Nevada. Am. Jour. Sci., 3d ser., vol. 3, 1872, 

 pp. 84, 85. 



•Preliminary paleontological report, * * * with remarks on the ages of the rocks, etc. U. S. 

 Geol. Surv. of the Terr., embracing portions of Montana, Idaho, Wyoming, and Utah; 6th Annual 

 Beport, 1873, pp. 463-487. 



