OF WESTERN NORTH AMERICA. 



13 



WoRTMAN, J. L. Geological and geographical sketch of the Bighorn Basin. In 

 Osborn, H. F., and Wortman, J. L., Fossil mammals of the Wahsatch 

 and Wind River beds. Am. Mus, Nat. Hist., Bull., vol. 4, 1892, pp. 

 135-144. 



Wind River beds distinct from and successive to the Wasatch of Bighorn Basin. 



and Osborn, H. F. See Osborn, H. F., and Wortman, J. L. 



OLIGOCENE, MIOCENE, PLIOCENE. 



CocKERELL, T. D. A. The fossil fauna and flora of the Florissant (Colorado) shales. 

 Univ. Colorado, Studies, vol. 3, 1906, Boulder, Colo., pp. 157-176. 

 Birds, fishes, insects, mollusks, plants. 



CoPE, E. D. Observations on the faunae of the Miocene Tertiaries of Oregon. U. S. 

 Geol. and Geog. Survey Terr., Bull., vol. 5, 1879-80, pp. 55-69. 

 John Day (Oligocene). 



Second contribution to a knowledge of the Miocene fauna of Oregon. Am. 



Philos. Soc, Proc, vol. 18, 1879, pp. 370-376. 

 John Day (Oligocene) . 



The White River beds of Swift Current River, Northwest Territory. Am. 



Naturalist, vol. 19, 1885, p. 163. 

 Oligocene, White River. 



The Vertebrata of the Swift Current Creek region of the Cypress Hills. Geol. 



and Nat. Hist. Survey Canada, Ann. Rept., vol. 1, 1885 (1886), appen- 

 dix to Article C, pp. 79-85. 

 Oligocene. 



A preliminary report on the vertebrate paleontology of the Llano Estacado. 



Geol. Survey Texas, 4th Ann. Rept., 1892 (1893), pp. 1-136. 



Description of the vertebrate fauna of the Loup Fork beds of the Llano Estacado, 

 Texas. 



Cummins, W. F. Notes on the geology of northwest Texas. Geol. Survey Texas, 3d 

 Ann. Rept., 1891 (1892), pp. 129-200; 4th Ann. Rept., 1892 (1893), pp. 

 179-238. 

 Geology of the Llano Estacado. 



Dall, W. H. Age of the Peace Creek bone beds of Florida. Acad. Nat. Sci. Phila- 

 delphia, Proc, 1891, p. 121. 

 Included in Pliocene. 



Geological results of the study of the Tertiary fauna of Florida, 1886-1903. 



Wagner Free Inst, of Science, Philadelphia, Trans., vol. 3, pt. 6, 1903, 

 pp. 1541-1620. 

 Oligocene and later formations. Tertiary MoUusca. 



and Harris, G. D. Correlation papers. The Neocene of North America. 



U. S. Geol. Survey, Bull. No. 84, 1892. 



See especially Chapter VI, on the supposed Neocene of the interior region, considered 

 by States, pp. 280-317. Table showing the vertical range of the Neocene of the inte- 

 rior. Map, p. 178. List oi names applied to Cenozoic beds and formations ol the United 

 States, p. 320. 



Darton, N. H. Preliminary report on the geology and underground-water resources 

 of the central Great Plains. U. S. Geol. Survey, Prof. Paper No. 32, 

 Washington, 1905. 



See especially Chadron { Titanotherium) , Brule ( Oreodon), Arikaree, Ogalalla forma- 

 tions. 



