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Think your kids grow fast? Scientists say one dinosaur weighed about as much as average human babies at birth -- but in just a few weeks, they were at least the size of golden retrievers, weighing 70 pounds.
A new study says dinosaurs were in decline long before an asteroid strike polished them off about 66 million years ago.
Researchers have found the remains of a pregnant Tyrannosaurus rex, a major discovery that they say could shed light on the differences between male and female meat-eating dinosaurs.
How did evolution produce a monstrous killer like T. rex? A fossil find in Central Asia is giving scientists a glimpse of the process.
Imagine a Tyrannosaurus rex with feathers. That idea and the links between some dinosaurs and today's birds are explored in an upcoming exhibition at the American Museum of Natural History.
A University of Alberta study of leg length in carnivorous dinosaurs has found they evolved longer limbs so they could run faster and catch their prey.
Scientists say they've discovered evidence of a frenzied mating ritual by dinosaurs: long grooves in the ground etched by the pawing of clawed feet.
Paleontologists have discovered a cliff-side in Utah brimming with fossils that offers a rare glimpse of desert life in western North America early in the age of dinosaurs.
Experts at the Rocky Mountain Dinosaur Resource Center are confident the bones found by a team in Montana are those of a previously undiscovered species.
Julius Csotonyi has brought life to everything from a bus-sized shark to a primitive snake with legs.