14 



CENOZOIC MAMMAL HORIZONS 



Barton, N. H. Age of the Monument Creek formation. Am. Jour. Sci., Sept., 1905, 

 4th ser., vol. 20, pp. 178-180. 

 Titanotherium remains. Oligocene. 



Geology and underground waters of the Arkansas Valley in eastern Colorado, 



U. S. Geol. Survey, Prof. Paper No. 52, 1906. 



Monument Creek formation, containing Titanotherium of ^yhite River age. p. 34; 

 Nussbaran formation, of late Tertiary age, p. 34. 



Douglass, Earl. The Neocene lake beds of western Montana, and descriptions of 

 some new vertebrates from the Loup Fork. Univ. Montana, thesis, 

 June, 1899. 



Geology, faunae, and correlation of White River, Deep River, and Madison Valley; 

 Loup Fork horizons in Montana; systematic description of certain fossil camels, etc. 



Fossil Mammalia of the A^Tiite River beds of Montana. Am. Philos. Soc, 



Trans., n. s.. vol. 20, 1901, pp. 1^2, pi. ix. 



Pipestone beds, Toston beds, Blacktail Deer Creek beds. Geology and faunae; new 

 genera and species of mammals. 



New vertebrates from the Montana Tertiary. Carnegie Mus. (Pittsburg, 



Pa.), Ann., vol. 2, No. 2, 1903, pp. 14&-200. 



Sage Creek beds (?Eocene), White River deposits. Fort Logan beds (upper Oligo- 

 cene), Deep River and Flint Creek beds. New mammals described. 



The Tertiary of Montana. Carnegie Mus. (Pittsburg, Pa.). Mem., vol. 2, 



1905, pp. 203-224. 

 Chiefly a description of Ictops, Xenotherium, and other lower White River mammals. 



Gidley; J. W. The fresh-water Tertiary of northwestern Texas, American Museum 

 Expedition of 1899-1901. Am. Mus. Nat. Hist.. Bull., vol. 19. 1903, 

 pp. 617-635. 



Geologic notes and sections; new mammals described. Rock Creek beds = Sheri- 

 dan {Equus) beds (Pleistocene); Blanco beds (Pliocenej; sections (1) at Mount Blanco 

 of (?) Goodnight (Paloduro) Miocene, (2) showing Panhandle (lower or middle Miocene) 

 beds, and (3) of Clarendon (Loup Fork) and Panhandle. Maps, faunae. 



— — — See Matthew, W. D., and Gidley, J. W. 



Gilbert, G. K. Lake Bonneville. U. S. Geol. Survey, Mon., vol. 1, 1890. 



The age of the Equus fauna, p. 393. Faunally later than upper Pliocene of Arno 

 Valley, and earlier than mid-Pleistocene, but surviving in Lake Bonneville region into 

 middle or upper Pleistocene. 



Harris, G. D. See Dall, W. H., and Harris, G. D. 



Hatcher, J. B. Discovery of Diceratherium, the two-horned rhinoceros, in the White 

 River beds of South Dakota. Am. Geologist, vol. 13, 1894, pp. 360-361. 

 Top of hite River correlated with John Day formation. 



On a small collection of vertebrate fossils from the Loup Fork beds of north- 

 western Nebraska; with note on the geology of the region. Am. Natur- 

 alist, vol. 28, 1894, pp. 236-248. 

 JELurodon, Aphelops, Teleoceras, Loup Fork and Equus beds. 



— The Titanotherium beds. Am. Naturalist, Mar. 1, 1893, pp. 204-221. 



Geographic distribution, description, stratigraphy; faunistic division into lower, 

 middle, and upper beds. 



Origin of the Oligocene and Miocene deposits of the Great Plains. Am. 



Philos. Soc, Proc, vol. 41, 1902, pp. 113-131. 



Gering, Arikaree, Ogalalla, Monroe Creek, Harrison, and Nebraska of Scott; classi- 

 fication of the Oligocene and Miocene; "lake-bed' hypothesis of origin disproved in 

 favor of fluviatile, flood-plain, and eolian hypothesis. 



