Vol. 2, 



BUI/lvBTINS 



OF 



AMERICAN PAlvBONTOlvOGY 



:o: 



No. 9 

 THE LIGNITIC STAGE 

 PART I 

 STRATIGRAPHY AND PELECYPODA 



BY 



G. D. Harris 

 Ju7ie J5, iSgy 



Ithaca, N. Y. 

 U. S. A. 





