The Age of Mammals in 

 Europe^ Asia^ and North America 



By henry FAIRFIELD OSBORN 



A.B., SC.D. PRINCETON, HON. LL.D. TRINITY, PRINCETON, COLUMBIA, HON. D.SC. 



CAMBRIDGE UNIVERSITY, HON. PH.D. UNIVERSITY OF CHRISTIANIA 



PRESIDENT AMERICAN MUSEUM OF NATURAL HISTORY 



PRESIDENT NEW YORK ZOOLOGICAL SOCIETY 



ILLUSTRATED BY 232 HALF-TONE AND OTHER ;FIGURES, 

 INCLUDING NUMEROUS MAPS, GEOLOGICAL SECTIONS, 

 FIELD VIEWS, AND REPRODUCTIONS FROM PHOTO- 

 GRAPHS OF MOUNTED FOSSIL SKELETONS AND OF THE 

 FAMOUS RESTORATIONS BY CHARLES R. KNIGHT. 



Royal 8vo $4.^0 net Carriage extra 



"The Age of Mammals" is not written for the palceontologist only. No 

 zoologist interested in mammals, birds, fishes, or reptiles can fail to 

 find it of value. The geologist finds here the clearest exposition that 

 has been given of the succession of geological events in the mammal- 

 bearing continental formations of the Tertiary and Quaternary of the 

 Western States. The anthropologist finds in the closing chapter on the 

 Pleistocene a key to most of the problems which confront him as to 

 the time of man's first appearance. The botanist may refer to it for 

 the succession and evolution of flora. 



To the general reader it offers the first connected account of the his- 

 tory of life on the earth during the later geological epochs, a record em- 

 bodying the very latest results of the active research going on in this 

 direction at the present time. In so far as science has succeeded in 

 piecing together the fragmentary evidence of the rocks, this volume con- 

 tains glimpses into the remote past of the continental outlines, the climate, 

 vegetation, and animal life of the epochs preceding the "Age of Man." 

 The text is supplemented by a very original and suggestive series of illus- 

 trations, notable among which are numerous half-tone reproductions from 

 the famous restorations of extinct mammals by Charles R. Knight, many 

 of which are published here for the first time. Moreover, there is appended 

 to the volume an invaluable Classification of the Mammalia, which gives 

 not only the systematic position but also the geologic and geographic dis- 

 tribution and the popular names of all the important genera of mammals, 

 both living and fossil, 



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