Cretaceous-Tertiary

101 Crazy Dinosaur Theories - Theories about dinosaur extinction
palaeo.gly.bris.ac.uk/Communication/Couch/101Theories.html

The Cretaceous Extinction - 85 percent of all species died in the K-T extinction at the end of the Cretaceous period. This article provides information on the geological setting, the species affected and the possible causes of the event.
park.org/Canada/Museum/extinction/cretmass.html

Dinosaur Extinction - Short summaries of some theories of dinosaur extinction.
web.ukonline.co.uk/a.buckley/dino.htm

Dinosaur Volcano Greenhouse Extinction - The dinosaur extinction occurred during a Deccan Traps volcanism-induced greenhouse climate change. By Dewey McLean.
filebox.vt.edu/artsci/geology/mclean/Dinosaur_Volcano_Extinction/pages/studentv.html

Dinosaurs and Extinctions - From the Classroom of the Future website. Includes an introduction to the major theories on the Cretaceous-Tertiary extinction event.
www.cotf.edu/ete/modules/msese/dinosaur.html

Dinosaurs' End: The Gravitational Hypothesis - An original, serious and well-argued theory by F.Malmartel explaining dinosaur extinction, especially why dinosaurs disappeared when other reptiles survived.
frederic.malmartel.free.fr/Fin_des_dinosaures/eedinosaures1.htm

The End-Cretaceous (K-T) Extinction - Discusses geologic setting, possible causes, and species affected by the event at the end of the Mesozoic Era.
hannover.park.org/Canada/Museum/extinction/cretmass.html

The Great Mystery - Information on current and past hypotheses on dinosaur extinctions from the University of California Paleontology Museum.
www.ucmp.berkeley.edu/diapsids/extinction.html

The K-T Extinction - Essay by Richard Cowen about the mass extinction of many species that occurred at the end of the Cretaceous Period and how the catastrophe hypotheses hold up to scrutiny.
www.ucmp.berkeley.edu/education/events/cowen1b.html

The Sylacauga Astrobleme and the Cretaceous-Tertiary Event - Harold Clinton Gragg considers the evidence for a newly discovered 135 km impact crater in central Alabama, and its significance with regards to the Cretaceous-Tertiary Event.
alastrobleme.org

Timing and Rate of the KT Extinction: What Else Died Out? - Article by Pete Goddard on this subject covering the sea, the land and the air, and coming to the conclusion that the evidence points to a single catastrophic event.
palaeo.gly.bris.ac.uk/communication/Goddard/page1.html#intro

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. <small>(March 8, 2004)</small>
www.sciencedaily.com/releases/2004/03/040308071720.htm