Cretaceous–Tertiary extinction event

External links

"The Chicxulub Debate". Princeton University. 2007. http://geoweb.princeton.edu/people/faculty/keller/chicxulub.html. Retrieved on 2007-08-02.
McLean D (1995). "The Deccan Traps Volcanism-Greenhouse Dinosaur Extinction Theory". University of Vermont. http://filebox.vt.edu/artsci/geology/mclean/Dinosaur_Volcano_Extinction/pages/studentv.html. Retrieved on 2007-08-02.
Kring DA (2005). "Chicxulub Impact Event: Understanding the K–T Boundary". NASA Space Imagery Center. http://www.lpl.arizona.edu/SIC/impact_cratering/Chicxulub/Chicx_title.html. Retrieved on 2007-08-02.
Cowen R (2000). "The K–T extinction". University of California Museum of Paleontology. http://www.ucmp.berkeley.edu/education/events/cowen1b.html. Retrieved on 2007-08-02.
"What killed the dinosaurs?". University of California Museum of Paleontology. 1995. http://www.ucmp.berkeley.edu/diapsids/extinction.html. Retrieved on 2007-08-02.
Rincon, P (2004-03-01). "Dinosaur impact theory challenged". BBC News. http://news.bbc.co.uk/2/hi/science/nature/3520837.stm. Retrieved on 2007-08-02.
Lovett RA (2006-10-30). ""Dinosaur Killer" Asteroid Only One Part of New Quadruple-Whammy Theory". National Geographic News. http://news.nationalgeographic.com/news/2006/10/061030-dinosaur-killer.html. Retrieved on 2007-08-02.
"BBC - Radio 4 In Our Time - KT Boundary" (RealAudio). BBC News. http://www.bbc.co.uk/radio4/history/inourtime/ram/inourtime_20050623.ram. Retrieved on 2008-03-13.
http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Tertiary_extinction_event