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While adult tyrannosaurs used their size and a powerful bite to kill large prey, youngsters used speed and agility to hunt smaller game, U.S. researchers say.
U.S. scientists using computerized tomography scanning have found dinosaurs had much larger air cavities in their heads than had been thought.
U.S. and Canadian scientists say they've determined the bony crests on the heads of duck-billed dinosaurs might have been used for communication.
U.S. scientists say they have discovered an anatomical oddity that helps flamingos in the eating process -- erectile tissue. The Ohio University researchers say flamingos are known for a peculiar feeding behavior; while standing in shallow water, they til
U.S. researchers belive the dinosaur Tyrannosaurus rex might not have been a predator, but a scavenger.
The first flying vertebrates in the age of dinosaurs managed to stay airborne despite being as large as small planes, researchers said Wednesday.
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United Press International
United Press International
United Press International
United Press International
United Press International
