Sheehan, P M <br/><br/>
Sudden extinction of the dinosaurs: latest Cretaceous, upper Great Plains, USA.  [electronic resource] 

 -  Science (New York, N.Y.)  Nov 1991 
 - 835-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.11536489  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Biological Evolution<br/>Fossils<br/>Geologic Sediments--analysis<br/>Minor Planets<br/>Montana<br/>North Dakota<br/>Paleontology