1. Dinosaur Extinction
   An article from Encyclopedia Britanica on the extinction of dinosaurs.
   http: //britannica.com/bcom/eb/article/0/0,5716...
   
   
2. Dinosaur Extinction Page
   An article about the mass extinctions of the dinosaurs.
   http: //web.ukonline.co.uk/a.buckley/dino.htm
   
   
3. Dinosaur Extinction: The Volcano-Greenhouse Theory
   Sixty-five million years ago, some phenomenon triggered mass extinctions on the lands and in the oceans. Read about the possible causes of the dinosaurs extinction.
   http: //filebox.vt.edu/artsci/geology/mclean/Dinosa...
   
   
4. Dinosaurs and Extinction
   Learn about the theories on why the dinosaurs became extinct. Includes information about the time periods.
   http: //cotf.edu/ete/modules/msese/dinosaur.htm...
   
   
5. Extinction
   In biology and ecology, extinction is the ceasing of existence of a species or group of taxons
   http: //academickids.com/encyclopedia/index.php...
   
   
6. The Dinosaur Origin and Extinction
   A proposal on how the dinosaurs originated and disappeared, and on their mutual relations. The origin of dinosaurs and birds, categories of dinosaurs, extinction of dinosaurs.
   http: //home13.inet.tele.dk/palm/dinweb.htm
   
   
7. What Killed The Dinosaurs?
   An article on what killed the dinosaurs.
   http: //ucmp.berkeley.edu/diapsids/extinction.h...