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NORTH AMERICAN INDEX FOSSILS. 



1900 Weller, S, Report on the fossils 

 from Wichita Mountains. G. S. A. 

 Bull. II : 142-144. 



1901 Sardeson, F. W. Fossils in the 

 St. Peter sandstone. Minn. Acad. 

 Nat. Sci. Bull. 3: 318-319. 



1 90 1 • The range and distribution 



of the lower Silurian fauna of Min- 

 nesota, with description of some new 

 species. Ibid., 326-343. 



1901 The lower Silurian forma- 

 tions of Minnesota compared. Ibid., 

 319-326. 



1903 Calvin, S. Geology of Howard 

 County [Iowa]. Iowa Geol. Surv. 

 13: 21-79, figs. 



1905 Udden, Jon Andreas. Geology of 

 Clinton County [Iowa; lists of Ordo- 

 vicic and Siluric fossils]. Iowa Geol. 

 Surv. 15 : 369-431. 



1907 Sardeson, F. W. Galena series. 

 G. S. A. Bull. 18: 179-194. 



1908 Discoid crinoidal roots [from 



Minn.] and comparison with Camaro- 

 crinus. Jour. Geol. 16: 239-254, 

 plates. 



1909 Branson, E. B. The fauna of 

 the residuary Auburn chert of Lin- 

 coln County, Missouri. Trans. Acad. 

 Sci. St. Louis 18 : 39-52, plates. 



Rocky ]V[ountains and Great Basin. 



1896 Beecher, C. E. On the occur- 

 rence of Silurian strata in the Big 

 Horn Mountains, Wyoming, and in 

 the Black Hills, South Dakota. Am. 

 Geol. 18: 31-33- 



1902 Lee, W. T. The areal geology 

 of the Castle Rock region, Colorado 

 [Fossils of Ordovicic, Mississippic 

 and Cretacic age]. Ibid. 29: 96-110. 



1906 Darton, N. H. Fish remains in 

 Ordovician rocks in Big Horn Moun- 

 tains, Wyoming, with a resume of 

 Ordovician geology of the northwest. 

 [Lists Ordovicic fossils from Wyo., 

 Mont, and Colo.] G. S. A. Bull. 17: 

 541-566, plates. 



Pacific Region. 



(California — Alaska.) 



1908 Knopf, A. Geology of Seward 



peninsula tin deposits, Alaska. [A few 



doubtfully Ordovicic fossils listed on 



p. 13.] U. S. G. S. Bull., 358. 



North America — General. 



1892 Vogdes, A. W. On the North 

 American species of the genus Agnos- 

 tus. Am. Geol. 9 : 377-396, plates. 



1903 Cumings, E. R. The morpho- 

 genesis of Platystrophia ; a study in 

 the evolution of a Paleozoic brachio- 

 pod. A. J. S. (4), 15: 1-48, 121-136, 

 figs. 



SILURIC. 



Eastern Canada, IVEaine and New 



Hampshire. 



1857 Barrande, J. Note relative aux 

 Cephalopodes fossiles du Canada. 

 Soc. Geol. France Bull. (ser. 2), 14: 

 428-436. 



1866 Billings, E. Catalogue of Silu- 

 rian fossils of Anticosti, 93 pp. Geol. 

 Surv. Canada. 



1874 Description of Silurian and 



Devonian fossils from Gaspe. Ibid., 

 Paleozoic Fossils 2, pt. i, plates. 



1874 On the genus Stricklan- 



dinia. Ibid. 2, pt. 3, plates. 



1874 Description of fossils from 



upper Silurian of Arisaig, Nova 

 Scotia. Ibid. 2, pt. 5, plates. 



1884 Whiteaves, J. F. Fossils from 

 Guelph formation of Ontario. Ibid. 

 3, pt. I, plates. 



1886 Bailey, L. W. On the Silurian 

 system of northern Maine, New 

 Brunswick and Quebec. Trans. Roy. 

 Soc. Can. 4 : 35-41. 



1892 Grant, C. C. Geological notes on 

 Marl Lake, Anticosti. Hamilton Assoc. 

 Jour, and Proc. 8 : 140-146. 



1892 Dodge, W. W., and Beecher, C. 

 E. On the occurrence of upper Silu- 

 rian strata [Clinton and Niagara] 

 near Penobscot Bay, Maine. A. J. S. 

 (3), 43: 412-418. 



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