Vol. 2 



bui,i,:etins 



OF 



AMERICAN PAIvBONTOI^OGY 



No. 9 

 THE LIGNITiC STAGE 

 PART I 

 STRATIGRAPHY AND PELECYPODA 



BY 



G. D. Harris 

 Jiine 7"5, iSgy 



Ithaca, N. Y. 

 U. S. A. 



