Carter, Claire <br/><br/>
Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho--a graptolite zone reference section / 
by Claire Carter and Michael Churkin, Jr. 
 - Washington :  U.S. Government of Printing Office,  1977 
 - iv, 37 p., 7 leaves of plates :  ill. ;  29 cm. 
 - Geological Survey professional paper ;  1020 .
<br/><br/>Bibliography: p. 32-33 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graptolites--Idaho--Custer County<br/>Graptolites--Idaho--Blaine County<br/>Paleontology--Ordovician<br/>Paleontology--Silurian<br/>Paleontology--Idaho--Custer County<br/>Paleontology--Idaho--Blaine County
<br/><br/><label>Dewey Class. No.: </label>566