Prevalence of the dinosaur's skin in fossil record may have more to do with texture, toughness than population density or habitat.
Newly discovered dinosaur fossils, plus a new assessment of dino size, have led to a revised list of the top 10 largest dinosaurs that ever lived.
Half-ton boulder with fossilized remains is hauled up to street level by elbow grease, ingenuity, and a ropes-and-pulleys system.
Think modern crocodiles are terrifying? How about a 16-foot-long, nearly half a ton sort-of-crocodile that was so tough is even outlasted the mass extinction of 60 million years ago. Laci has more details on this beast from the land of the lost.
The new species was a 2-pound tree-dweller that likely fed on even smaller mammals and insects.
Some of the oldest organic remains from dinosaurs are found at a site in China.