SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
Bulletin 125 
NORTH AMERICAN LATER TERTIARY 
and Quaternary bryozoa 
FERDINAND CANU 
Versailles, France 
AND 
RAY S. BASSLER 
Washington, District of Columbia 
21 ) ' 
c 4 =) 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1923 
Creeled 
