Longrich, Nicholas R <br/><br/>
Mass extinction of lizards and snakes at the Cretaceous-Paleogene boundary.  [electronic resource] 

 -  Proceedings of the National Academy of Sciences of the United States of America  Dec 2012 
 - 21396-401 p.  digital 
<br/><br/> Publication Type: Historical Article; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>1091-6490 
<br/><br/><label>Standard No.: </label>10.1073/pnas.1211526110  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Biological Evolution<br/>Body Size<br/>Extinction, Biological<br/>History, Ancient<br/>Lizards--anatomy & histology<br/>North America<br/>Paleontology<br/>Snakes--anatomy & histology<br/>Time Factors