SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 

 Bulletin 106 



NORTH AMERICAN EARLY TERTIARY 



BRYOZOA 



BY 



FERDINAND CANU 



Versailles, France 



AND 



RAY S. BASSLER 

 Washington, District of Columbia 



PLATES 







WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1920 



