Web Results
Most scientists believe that the extinction of non-avian dinosaurs occurred due to a catastrophic asteriod impact called the Cretaceous-Tertiary extinction event.
Based on fossil evidence, modern day birds evolved from dinosaurs that were not killed as a result of the Cretaceous-Tertiary extinction event.

What Killed The Dinosaurs? - University of California Museum of ...

www.ucmp.berkeley.edu/diapsids/extinctheory.html

Two main camps exist in paleontology today, each having a different view of what killed the dinosaurs and other organisms at the K-T boundary. Controversy ...

What killed the dinosaurs? - University of California Museum of ...

www.ucmp.berkeley.edu/diapsids/extinction.html

History: Until recently, people simply knew that dinosaurs went extinct — their fossils were found throughout the Mesozoic era, but were not located in the rock ...

Evolution: Extinction: What Killed the Dinosaurs? - PBS

www.pbs.org/wgbh/evolution/extinction/dinosaurs/asteroid.html

In just a few years, according to this hypothesis, these frigid and sweltering climatic extremes caused the extinction of not just the dinosaurs, but of up to 70 ...

Evolution: Extinction: What Killed the Dinosaurs? - PBS

www.pbs.org/wgbh/evolution/extinction/dinosaurs/low_bandwidth.html

In the search for answers to what killed the dinosaurs, scientists have looked beyond fossils. Geological evidence also holds clues and has contributed to many ...

What Killed the Dinosaurs? - PBS

www-tc.pbs.org/wgbh/evolution/extinction/dinosaurs/dino.swf

In just a few years, according to this hypothesis, these frigid and sweltering climatic extremes caused the extinction of not just the dinosaurs but up to 70 percent ...

Activity 2- What Killed the Dinosaurs? - PBS

www.pbs.org/wgbh/evolution/educators/lessons/lesson1/act2.html

Did all dinosaurs become extinct or just individual species? This is ... You might enjoy reading the invalid hypotheses, such as "hay fever killed the dinosaurs.".

What Killed the Dinosaurs? | Science | Interactive | PBS ...

www.pbslearningmedia.org/resource/tdc02.sci.ess.earthsys.dinokill/what-killed-the-dinosaurs/

This interactive activity from the Evolution Web site outlines the evidence gathered to explain what caused the extinction of the dinosaurs 65 million years ago.

Ask HISTORY: What Killed the Dinosaurs? Video - Dinosaurs ...

www.history.com/topics/dinosaurs-an-introduction/videos/ask-history-what-killed-the-dinosaurs

Get the full story behind the extinction of the mammoth species that once roamed the earth.

What Killed Dinosaurs: New Ideas About the Wipeout

news.nationalgeographic.com/news/2013/13/130212--chicxulub-asteroid-dinosaurs-volcano-mass-extinction-environment-science/

Feb 11, 2013 ... New insights about the asteroid thought to have killed off the dinosaurs suggest it may have just been the final blow, and that the reptiles were ...