When did dinosaurs go extinct? Fossils give exact timing. | Popular Science
Dinosaur - Extinction | Britannica
Dinosaur die-out might have been second of two closely-timed extinction events – UW News | College of the Environment
Why are dinosaurs extinct? You asked Google – here's the answer | Brian Switek | The Guardian
Why Did the Dinosaurs Die Out? - Causes & Dates - HISTORY
Were dinosaurs doomed before the asteroid hit? - BBC Future
What if dinosaurs hadn't died out? - BBC Future
How Dinosaurs became Extinct | Dinosaur Extinction | Dinosaurs video - YouTube
The Top Ten Weirdest Dinosaur Extinction Ideas | Science| Smithsonian Magazine
Earth's collapsing systems led to dinosaurs dying out – we're headed the same way- Technology News, Firstpost
Dinosaurs Didn't Die from Cretaceous Cramps - Scientific American Blog Network
Everything You Know About Dinosaur Deaths Is Wrong | Al Jazeera America
Dinosaurs Went Extinct Because of the Dark and Cold
When did dinosaurs go extinct? The theories on how they died.
These Were the Last Dinosaurs to Walk the Earth as Asteroid Hit
The Big Question: Why did dinosaurs die out, and why should it matter 65 million years later? | The Independent | The Independent
Dinosaur Extinction Explained for Kids! - YouTube
Dinosaurs weren't driven to extinction by that meteorite after all | Ars Technica
How Did Dinosaurs Go Extinct? - AZ Animals
When Did Dinosaurs Go Extinct and What Caused Them To Die Out
When did dinosaurs go extinct? The theories on how it happened and what survived
Extinction and the Rise of the Dinosaurs - Scientific American Blog Network
Why Did the Dinosaurs Go Extinct? | SiOWfa15: Science in Our World: Certainty and Controversy
Why did the dinosaurs go extinct? Debate rages on | CNN
We know how dinosaurs became extinct. A new discovery | DinoAnimals.com
