BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 33, PP. 671-688 NOVEMBER 2, 1922 



PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



AGE AND DEVELOPMENT OF RED BEDS AND TERRESTRIAL 



VERTEBRATES OF THE APPALACHIAN AND 



KANSAS-TEXAS SECTIONS 1 



BY J. W. BEEDE 



{Read before the Paleontological Society December 28, 1922) 



CONTENTS 



Page 



Introduction 671 



Correlations 671 



Succession of the invertebrates and correlation of their horizons 671 



Succession of the floras and correlation of their horizons 676 



Succession of the vertebrates and correlation of their horizons 679 



Review of conditions versus time hypothesis 682 



Age of the Appalachian and the western red beds 6S4 



Conclusions 687 



Introduction 



A study of the Upper Pennsylvanian and Lower Permian stratigraphy 

 and fossils has been in progress by the writer for some time. This study 

 has involved the correlation of the beds of these systems over North 

 America and Eurasia, in so far as that is possible. It has particularly 

 involved the correlation of the Appalachian and western sections, and in 

 view of some novel suggestions that have been made to account for the 

 peculiar distribution of the fossil air-breathing vertebrates, it is thought 

 that the results of this work may be of interest. 



Correlations 



SUCCESSION OF THE INVERTEBRATES AND CORRELATION OF THEIR 



HORIZONS 



The invertebrate fauna of the upper part of the American Pennsyl- 

 vanian has certain characteristics. For instance, the fauna, as a whole, 



1 Manuscript received by the Secretary of the Society .Tune 10, 1922. 

 Published with the permission of the Director of the Bureau of Economic Geology 

 and Technology, University of Texas. 



(671) 



