REVISION OF THE AMPHIBIA AND PISCES 



OF THE 



PERMIAN OF NORTH AMERICA 



By 



E. C. CASE, 



Junior Professor of Historical Geology and Paleontology, 

 University of Michigan 



WITH A 



Description of Permian Insects by E. H. Sellards 



AND A 



Discussion of tlie Fossil Fishes by Louis Hussakof 



WASHINGTON, D. C. 

 Published by the Carnegie Institution of Washington 



1911 



