The great Ordovician biodiversification event / 
edited by Barry D. Webby ... [et al.]. 
 - New York :  Columbia University Press,  c2004. 
 - x, 484 p. :  ill., maps ;  29 cm. 
 - Critical moments and perspectives in earth history and paleobiology .
 - 560/.1731 .
 - Critical moments in paleobiology and earth history series. .
<br/><br/>Includes bibliographical references (p. 395-466) and index. 
<br/><br/><label>ISBN: </label>0231126786 (acid-free paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--Ordovician.<br/>Biodiversity.
<br/><br/><label>Dewey Class. No.: </label>560/.1731