Colbert, Edwin Harris. <br/><br/>
Evolution of the vertebrates :  a history of the backboned animals through time / 
Edwin H. Colbert. 
 - 2nd ed. 
 - New York :  John Wiley,  [1955] 
 - xvi, 535 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates, Fossil.<br/>Vertebrates--Evolution.<br/>Phylogeny.