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There are many theories about why the dinosaurs finally became extinct, some of which are more than a little outlandish. ... The two main 'serious' theories are the asteroid and volcano theories, both of which make some use of the analysis of the rocks in and around the K-T boundary (the Cretaceous - Tertiary boundary).
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web.ukonline.co.uk/a.buckley/dino.htm
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22 articles on Theories on how dinosaurs became extinct ... There are many theories on how dinosaurs became extinct from the realistic to the ridiculous. With the many reasons given the most popular one at the moment is the asteriod theory and there are good reasons for this.
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www.helium.com/knowledge/225507-theories-on-how-dinosau...
www.helium.com/knowledge/225507-theories-on-how-dinosaurs-became-extinct
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Dinosaur Extinction Page A number of theories for the extinction of dinosaurs, illustrated with photographs. ... Dinosaur Extinction: The Volcano- Greenhouse Theory Exploring this theory for the reason the dinosaurs became extinct.
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www.ontalink.com/archaeology/dinosaurs/extinction.html
www.ontalink.com/archaeology/dinosaurs/extinction.html
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How dinosaurs became extinct is one of the greatest questions of all time. ... Those who do not believe the Biblical account of Creation have to come up with other theories.
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www.angelfire.com/mi/dinosaurs/dinodeath.html
www.angelfire.com/mi/dinosaurs/dinodeath.html
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"There have been several theories on the cause of the K-T boundary which led to the massive extinction. These theories have centered on either impact events or increased volcanism; some include elements of both. A scenario combining th...
http://www.answerbag.com/q_view/74351
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Possible Theories ... The oceans became stagnant due to high levels of Carbon Dioxide. Stagnant conditions mean that there would be no oxygen for the any of the species living in the oceans, therefore there would be no food. However this theory assumes that the dinosaurs all lived in marine environments.
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palaeo.gly.bris.ac.uk/Communication/Couch/possible.html
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the end of the Cretaceous period marks one of Earth,s mysteries, the extinction of the dinosaurs. many theories have been put forward to explain this, after all they did live for 160 million years. ... all i heard is the whole meteor thing how it hit the earth and something happened and the dinosaurs became extinct...
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answers.yahoo.com/question/index?qid=20080420172137AAgG...
answers.yahoo.com/question/index?qid=20080420172137AAgGuSp
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It is predicted that all dinosaurs became extinct around the date of 61 million years ago which is shortly past the Cretaceous Period. No one really knows for sure on how exactly dinosaurs became extinct but there ... With this strange mystery comes many theories on the possible reasons to what happened to stop their species.
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www.dinosaurfact.net/dinoextinct.php
www.dinosaurfact.net/dinoextinct.php
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Dinosaurs suddenly became extinct about 65 million years ago, at the end of the Cretaceous period, which was a time of high volcanic and tectonic activity. There are a lot of theories why the extinction occurred.
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www.cbv.ns.ca/marigold/history/dinosaurs/dinosaurs.html
www.cbv.ns.ca/marigold/history/dinosaurs/dinosaurs.html
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