[Annals N. Y. Acad. Sci., Vol. XXI, pp. 119-150. 20 August, 1911.] 



OX SOME NEW GENERA AND SPECIES OF PENNSYL- 



VANIAN FOSSILS FROM THE WEWOKA 



FORMATION OF OKLAHOMA 1 



By George H. Girty 



CONTENTS 



Page 



Introduction 119 



Descriptions of Genera and Species 120 



Protozoa 120 



Spongise 121 



Coelenterata 122 



Ecbinodermata 122 



Annelida 123 



Bracbiopoda 125 



Pelecypoda 131 



Scapbopoda 135 



Gasteropoda 136 



Cephalopoda 142 



Crustacea 154 



L1BRAR 

 NEW YO! 

 BOTANIC 



GARDtif 



Introduction" 



Geographically the Wewoka formation is typically exposed in the 

 northwestern portion of the Coalgate and the southwestern portion of 

 the Wewoka quadrangles of Oklahoma. Lithologically it consists of 

 alternating bands of sandstone and shale, — four sandstone and three 

 shale members — and it has a thickness of about 700 feet. 2 Geologically 

 the Wewoka formation is part of the Pennsylvanian series and in the 

 Oklahoma section lies above a considerable thickness of Pennsylvanian 

 rocks, but it probably correlates with the lower portion of the Pennsyl- 

 vanian section of Kansas. 



The fauna of the Wewoka formation, so far as known, occurs in the 

 two lower shales, from which the fossils weather free and for the most 

 part in an unusually perfect condition of preservation. The fauna is 

 highly differentiated, comprising not less than 148 species, and it is not 



1 Published by permission of the Director of the United States Geological Survey. 

 2 U. S. Geol. Survey, Geol. Atlas, Folio 74. 1001. 



(119) 



