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Top 20 Directory:
Top : Science : Earth_Sciences : Paleontology : Extinction : Cretaceous-Tertiary
  		• Impact Theory
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    Sites:
  		• 101 Crazy Dinosaur Theories: Theories about dinosaur extinction
  		• Dinosaur Extinction: Short summaries of some theories of dinosaur extinction.
  		• Dinosaur Volcano Greenhouse Extinction: The dinosaur extinction occurred during a Deccan Traps volcanism-induced greenhouse climate change. By Dewey McLean.
  		• Dinosaurs and Extinctions: From the Classroom of the Future website. Includes an introduction to the major theories on the Cretaceous-Tertiary extinction event.
  		• Science Daily: A World Ruled By Fungi: After the extinction event, the dominant life form was the fungi that thrived in the dark. Researchers have constructed a timeline of the fungal takeover and eventual replacement by resurgent plant life.
  		• The End-Cretaceous (K-T) Extinction: Discusses geologic setting, possible causes, and species affected by the event at the end of the Mesozoic Era.
  		• The Great Mystery: Information on current and past hypotheses on dinosaur extinctions from the University of California Paleontology Museum.
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