SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 75, NUMBER 2 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



V 



No. 2.— CAMBRIAN AND LOWER OZARKIAN 

 TRILOBITES 



(With Plates 9 to 14) 



BY 

 CHARLES D. WALCOTT 



(Publication 2788) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JULY 19, 1924 



