SMITHSONIAN MISCELLANEOUS COLLECTIONS 
VOLUME 127 (IN TWO PARTS), PART I 
Charles D. and Mary Waux Walcott 
Research Fund 
CRAZYAN AND RELATED 
BRACHIOPODS 
PAR tO TEXT 
(WitH 269 PLaTEs, IN Part II) 
By 
G. ARTHUR COOPER 
Curator of Invertebrate Paleontology and Paleobotany 
United States National Museum 
Smithsonian Institution 
(PUBLICATION 4253) 
CITY OF WASHINGTON 
PUBLISHED BY THE SMITHSONIAN INSTITUTION 
JUNE 12, 1956 
