Series P, 



Vol. I. Fascicle 1. 



PAL/EONTOLOGIA SINICA. 



Editors: 

 V. K. Ting and W. H. Wong 



1 ' i -.*.*' ' 

 > ,", * t* * '' "\* '* 



Ordovician Fossils 



of 

 North China. 



BY 



AMADEUS W. GRABAU S. D. 



Palaeontologist to the Survey and Professor of Paleontology 



in the National University Peking. 

 With Plates I - IX and 20 Text figures 



Published by the Geological Survey of China 



LL> 



Peking 1922. 



