Dinosaurs 'grew fast, bred young'
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Dinosaurs bred as early as age eight, long before they reached adult size and maturity, fossil evidence suggests.
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Contrary to the movie Jurassic Park, in which scientists recreate dinosaurs from ancient DNA, genetic material more than about 50 thousand years old cannot be reliably recovered.
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RIO DE JANEIRO -- Scientists have found well-preserved fossils of a new dinosaur species that lived 225 million years ago in southern Brazil but had its closest relatives in what is now Europe, Brazilian paleontologists said yesterday.
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Fossil hunters say they have discovered bones of two massive meat-eating dinosaurs in Africa.
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The earliest evidence for the existence of reptiles is found in  rocks dating back 315 million years.
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CLEVELAND - A new dinosaur species was a plant-eater with yard-long horns over its eyebrows, suggesting an evolutionary middle step between older dinosaurs with even larger horns and the small-horned creatures that followed, experts said.
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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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For big beasts, dinosaurs like  Tyrannosaurus rex sure had small genomes.
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Tyrannosaurus rex was fast enough on its legs to outrun a footballer, a study by a British team suggests.
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SPACE.com / Paleontologists from Montana and Mongolia, who want to flesh out the developmental biology of dinosaurs, recently found 67 dinosaur skeletons in the Gobi Desert in just one week.
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Scientists say they have found a small, earlier cousin of Tyrannosaurus rex that had at least a partial coat of feathers. Includes image gallery.
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Two major classes of dinosaurs show genomes distinctly aligned with modern birds, reptilesCAMBRIDGE, Mass.
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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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Tyrannosaurus Rex grew incredibly fast during a teenaged growth spurt that saw the dinosaur expand its bulk by six times, but the fearsome beasts "lived fast and died young," researchers said on Wednesday.
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A rare fossil from the age of the dinosaurs is shedding light on when the modern crocodile first evolved a skull strong enough to keep hold of its prey during the dismembering &#39;death roll&#39;.
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The dinosaurs might have gone out with a sudden bang, but their rise to dominance was a gradual ascent, experts say.
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Palaeontologists, reporting an extraordinarily rare fossil find, say they have uncovered a nearly complete skeleton of a hominid child who lived at a key stage in primate evolution more than three million years ago.