REVISION OF THE AMPHIBIA AND PISCES 



OF THE 



PERMIAN OF NORTH AMERICA 



By 



Junior Professor of HistoricaTGeology and Paleontology, 

 University of Michigan 



WITH A 



Description of Permian Insects by E. H. Sellards 



AND A 



Discussion of the Fossil Fishes by Louis Hussakof 



WASHINGTON, D. C. 

 PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON 



191 1 ^ 



