Knoll, A H <br/><br/>
Comparative Earth history and Late Permian mass extinction.  [electronic resource] 

 -  Science (New York, N.Y.)  Jul 1996 
 - 452-7 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Biological Evolution<br/>Calcification, Physiologic<br/>Carbon Dioxide--chemistry<br/>Carbon Isotopes<br/>Earth, Planet<br/>Geological Phenomena<br/>Geology<br/>Hypercapnia--etiology<br/>Models, Chemical<br/>Oxygen--chemistry<br/>Paleontology<br/>Seawater--chemistry