Tracks suggest dinos could swim
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Underwater footprints reveal that some dinosaurs were capable of swimming, scientists report.
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Large, carnivorous dinosaurs roamed  southern Australia 115 million years ago, when the continent  was joined to the Antarctica, and were padded with body fat to  survive temperatures as low as minus 30 degrees Celsius.
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A fossil of a gliding animal shows that mammals experimented with flight around when birds first took to the skies.
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Tyrannosaurus rex, originally believed to be something of a plodder owing to its massive bulk, was capable of speeds up to 18 mph, according to some new calculations.
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Researcher Matt Mossbrucker believes four small dinosaur tracks found within sight of the skyscrapers of downtown Denver were made by two stegosaur babies, a find he says would be "incredibly rare."
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During the age of dinosaurs, tiny squirrel-like creatures climbed trees and jumped into the darkness. Then they spread their limbs and glided away &#151; the first known mammals to take to the air, a new report says.
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To the growing evidence that some dinosaurs had feathers, add the family of tyrannosaurs, mighty predators in the age of reptiles.
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Scientists have found a 16-foot fossil of a new species of fish-like lizard that swam the seas 160 million years ago when dinosaurs ruled on land.
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The evolution of whales from four-legged land dwellers into streamlined swimmers has been traced in fossilised ears, Nature reports.
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Paleontologists have discovered a new  small gliding reptile in 220 million-year-old sediments of a quarry on the Virginia-North Carolina border. The new creature is named Mecistotrachelos apeoros, meaning &quot;soaring, long-necked&quot; and is about the size of a blue jay from head to tail.
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Small, fast-moving carnivorous dinosaurs had air-sac respiratory systems similar to modern-day penguins and other diving birds, scientists reported on Wednesday.
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Good news for dinosaur fans: There are probably a lot more of them waiting to be discovered. At least, their fossils are.
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Norwegian scientists report finding a  treasure trove  of fossils belonging to giant sea reptiles that once roamed the Arctic sea about 150 million years ago.Comment
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WASHINGTON - A newly discovered fossil may be the remains of one of the first stealth hunters, a swimming dinosaur that could use its long neck to sneak up on prey and strike without warning.
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PARIS: A team led by the world&#39;s most successful fossil hunter said that they have found the remains of a feathery dragon-like forerunner of the mighty Tyrannosaurus rex at a dinosaur graveyard in northeastern China.
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A new fossil of a juvenile dinosaur that lived 140 million years ago is shedding light on how the ancient reptiles grew from youngsters to enormous adults.
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Blog: Paleontologists have found that precursors to dinosaurs weren't so rapidly replaced as previously thought.