Holmes, Thom, <br/><br/>
The First Vertebrates : 

 -  Infobase Publishing,  2008. 
 - 189 pages 
<br/><br/><label>ISBN: </label>9780816059584 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Juvenile Nonfiction.
<br/><br/><label>Dewey Class. No.: </label>567  / HOL