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Upham, W. 



'93 Estiinat(^s of Geologic Time. 



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Vacek, M. 



'00 iJber Silugethiei-reste der Pikermifauna voni Eichkogel bei ^Miklling. 

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Veatch, A. C. 



'07 Geography and Geology of a Portion of Southwestern Wyoming, 

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Walcott, C. D. 



"93 Geologic Time as Indicated by the Sedimentary Rocks of North 

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 Proc. Amer. Ass. Adv. Sci., Sect. Geol. & Geogr., Vol. XLII, 1893. 



"Wallace, A. R. 



'76 The Geographical Distribution of Animals with a Study of the 



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Ward, L. F. 



'95 Plants, Fossil. Johnson's Univ. Cyclo., Vol. IX, 1895, pp. 327-333. 



Ward, R. 



'07 Records of Big Game. London, 1907. 



Warren, J. C. 



'55 Description of a Skeleton of the Mastodon giganteas of North 

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Weber, M. 



"04 Die Saugetiere. Jena, 1901. 



Weeks, F. B. 



"02 Bibliography of North American Geology, Paleontology, Petrology? 

 and Mineralogy for the Years 1892-1900, inclusive. 

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