Asteroid Impact vs. Volcano?Greenhouse Dinosaur Extinction Debate
Dewey McLean looks at the orgins of the two theories and the outcomes of the debates between their proponents. Deccan Traps mantle plume volcanism 65 million years ago triggered greenhouse climatic warming and the extinction of the dinosaurs.
Meet the dinosaurs and examine what may have caused their demise.
Enchanted Learning: Dinosaur Extinction
Answering some basic questions about extinctions, in particular the mass extinction of the dinosaurs.
Wikipedia: Cretaceous-Tertiary Extinction Event
Introduction to the extinction event that occurred about 65 million years ago and is best-known for the extinction of the dinosaurs.