http://www.sciencedaily.com/news/fossils_ruins/tyrannosaurus_rex/ Tyrannosaurus Rex. Read about skeletons of the oldest T Rex ever found, gigantic meat-eating dinosaurs and more. Pictures too. en-us Wed, 11 Nov 2009 16:05:01 EST Wed, 11 Nov 2009 16:05:01 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/fossils_ruins/tyrannosaurus_rex/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2009/11/091104122538.htm A long forgotten fossil skull in the collections of the Natural History Museum in London has now provided crucial clues to the early stages of the lengthy evolutionary history of Tyrannosaurus rex and related large carnivorous dinosaurs. Wed, 04 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091104122538.htm http://www.sciencedaily.com/releases/2009/11/091102121454.htm Teenage tyrannosaurs got into some serious fights with their peers. The evidence can be found on Jane, a prized juvenile Tyrannosaurus rex, discovered in 2001 in Montana. The dinosaur's fossils show that it sustained a serious bite that punctured through the bone of its upper jaw and snout. The researchers determined that another juvenile tyrannosaur was responsible for the injury. Mon, 02 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091102121454.htm http://www.sciencedaily.com/releases/2009/10/091031002314.htm Paleontologists Mark Goodwin and Jack Horner have dug for 11 years in Montana's Hell Creek Formation in search of every dinosaur fossil they can find, accumulating specimens of all stages of development. Their new report on the growth stages of dome-headed dinosaurs shows that two named species are really just young pachycephalosaurs. They say that perhaps one-third of all named dinosaurs may not be separate species, but juvenile or subadult stages of other known dinosaurs. Sat, 31 Oct 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091031002314.htm http://www.sciencedaily.com/releases/2009/10/091006155909.htm A Canadian researcher has found 70 million year old evidence of dinosaur cannibalism. The jawbone of what appears to be a Gorgosaurus was found in 1996 in southern Alberta. A technician at the Royal Tyrell Museum in Alberta found something unusual embedded in the jaw. It was the tip of a tooth from another meat-eating dinosaur. Wed, 07 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091006155909.htm http://www.sciencedaily.com/releases/2009/10/091005124831.htm Just a few weeks after tiny, early Raptorex kriegsteini was unveiled, a new wrench has been thrown into the family tree of the tyrannosaurs. The new Alioramus altai -- a horned, long-snouted, gracile cousin of Tyrannosaurus rex -- shared the same environment with larger, predatory relatives. Mon, 05 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091005124831.htm http://www.sciencedaily.com/releases/2009/09/090929133117.htm When pondering the demise of a famous dinosaur such as 'Sue,' the mighty Tyrannosaurus rex whose fossilized remains are a star attraction of the Field Museum in Chicago, it is hard to avoid the image of clashing Cretaceous titans engaged in bloody, mortal combat. But a new study provides evidence that Sue, perhaps the most famous dinosaur in the world, was felled in more mundane fashion by a lowly parasite that still afflicts modern birds. Wed, 30 Sep 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090929133117.htm http://www.sciencedaily.com/releases/2009/09/090928205415.htm A fossil of a bird-like dinosaur with four wings has been discovered in northeastern China. The specimen bridges a critical gap in the transition from dinosaurs to birds, and reveals new insights into the origin evolution of feathers. Tue, 29 Sep 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090928205415.htm http://www.sciencedaily.com/releases/2009/09/090917144115.htm When you think of Tyrannosaurus rex, a small set of striking physical traits comes to mind: an oversized skull with powerful jaws, tiny forearms and the muscular hind legs of a runner. But, researchers have just unearthed a much smaller tyrannosauroid in China, no more than three meters long, that displays all the same features -- and it predates the T. rex by tens of millions of years. Thu, 17 Sep 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090917144115.htm http://www.sciencedaily.com/releases/2009/08/090806112357.htm Tyrannosaurus rex and other predatory dinosaurs might not have been fearless hunters after all. Using new fossil evidence, researchers in Germany propose that the large carnivores hunted mainly juvenile dinosaurs instead of giant herbivorous adults. Fri, 07 Aug 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/08/090806112357.htm http://www.sciencedaily.com/releases/2009/07/090729103737.htm A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage. The findings is the latest addition to an ongoing controversy over which biochemical remnants can be detected in the dinosaur. Fri, 31 Jul 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090729103737.htm http://www.sciencedaily.com/releases/2009/07/090703070846.htm Scientists have discovered three new species of Australian dinosaur discovered in a prehistoric billabong in Western Queensland: two giant, herbivorous sauropods and one carnivorous theropod. Fri, 03 Jul 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090703070846.htm http://www.sciencedaily.com/releases/2009/06/090617171816.htm Scientists have discovered a unique beaked, plant-eating dinosaur in China. The finding, they say, demonstrates that theropod, or bird-footed, dinosaurs were more ecologically diverse in the Jurassic period than previously thought, and offers important evidence about how the three-fingered hand of birds evolved from the hand of dinosaurs. Thu, 18 Jun 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090617171816.htm http://www.sciencedaily.com/releases/2009/06/090609092055.htm Researchers have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight -- and the finding means it's unlikely that birds descended from any known theropod dinosaurs. Tue, 09 Jun 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090609092055.htm http://www.sciencedaily.com/releases/2009/04/090430144528.htm Ancient protein dating back 80 million years to the Cretaceous geologic period has been preserved in bone fragments and soft tissues of a hadrosaur, or duck-billed dinosaur. The new findings support earlier results suggesting that collagen protein survived in the bones of a well preserved Tyrannosaurus rex, and offer robust new evidence supporting previous conclusions that birds and dinosaurs are evolutionarily related. Fri, 01 May 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090430144528.htm http://www.sciencedaily.com/releases/2009/04/090422085144.htm A team of researchers from China and the US have excavated a treasure trove of dinosaur skeletons from Early Cretaceous rocks in the southern part of the Gobi Desert. Two of their discoveries represent new species of theropod dinosaurs, including one that represents a 'missing link' in the fossil record of tyrannosaurs. Wed, 22 Apr 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090422085144.htm http://www.sciencedaily.com/releases/2009/03/090316173218.htm Massive predators like Albertosaurus and Tyrannosaurus Rex may have been at the top of the food chain, but they were not the only meat-eating dinosaurs to roam North America, according to Canadian researchers who have discovered the smallest dinosaur species on the continent to date. Their work is also helping re-draw the picture of North America's ecosystem at the height of the dinosaur age 75 million years ago. Tue, 17 Mar 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/03/090316173218.htm http://www.sciencedaily.com/releases/2009/02/090220110912.htm Scientists used laser imaging to investigate how fat -- or fit -- T. rex and his fellow dinosaurs were. Researchers found that a small T. rex could have weighed anywhere between 5.5 and 7 tonnes, while their larger specimen (Stan) might have weighed as much as 8 tonnes. Fri, 20 Feb 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/02/090220110912.htm http://www.sciencedaily.com/releases/2009/02/090204112217.htm The largest snake the world has ever known -- as long as a school bus and as heavy as a small car -- ruled tropical ecosystems only 6 million years after the demise of the fearsome Tyrannosaurus rex, according to a new discovery published in the journal Nature. Wed, 04 Feb 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/02/090204112217.htm http://www.sciencedaily.com/releases/2009/01/090126082351.htm A recent study by researchers in England has found that scientists' knowledge of the evolution of dinosaurs is remarkably complete. Fri, 30 Jan 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/01/090126082351.htm http://www.sciencedaily.com/releases/2008/12/081222221537.htm Earth's creatures come in all sizes, yet they (and we) all sprang from the same single-celled organisms that first populated the planet. So how on Earth did life go from bacteria to the blue whale? "It happened primarily in two great leaps, and each time, the maximum size of life jumped up by a factor of about a million," said a professor of geological and environmental science. Tue, 23 Dec 2008 20:00:00 EST http://www.sciencedaily.com/releases/2008/12/081222221537.htm http://www.sciencedaily.com/releases/2008/12/081208114300.htm Paleontologists have long known that dinosaurs had tiny brains, but they had no idea the beasts were such airheads. Scientists suggest that newly discovered large air spaces helped lighten the load of the head, making it about 18 percent lighter than it would have been without all the air. That savings in weight could have allowed the predators to put on more bone-crushing muscle or even to take larger prey. Tue, 09 Dec 2008 08:00:00 EST http://www.sciencedaily.com/releases/2008/12/081208114300.htm http://www.sciencedaily.com/releases/2008/09/080930102631.htm Dinosaurs did not proliferate immediately after they originated, but that their rise was a slow and complicated event, and driven by two mass extinctions, according to new research. Tue, 30 Sep 2008 17:00:00 EDT http://www.sciencedaily.com/releases/2008/09/080930102631.htm http://www.sciencedaily.com/releases/2008/09/080923104414.htm An unusual breed of dinosaur that was the size of a chicken, ran on two legs and scoured the ancient forest floor for termites is the smallest dinosaur species found in North America, according to a researcher who analyzed bones found during the excavation of an ancient bone bed near Red Deer, Alberta, in 2002. Thu, 25 Sep 2008 17:00:00 EDT http://www.sciencedaily.com/releases/2008/09/080923104414.htm http://www.sciencedaily.com/releases/2008/08/080827152614.htm A 75-million-year-old fossil of a pregnant turtle and a nest of fossilized eggs that were discovered in the badlands of southeastern Alberta are yielding new ideas on the evolution of egg-laying and reproduction in turtles and tortoises. Wed, 27 Aug 2008 17:00:00 EDT http://www.sciencedaily.com/releases/2008/08/080827152614.htm http://www.sciencedaily.com/releases/2008/08/080805192720.htm With long limbs and a soft body, the duck-billed hadrosaur had few defenses against predators such as tyrannosaurs. But new research on the bones of this plant-eating dinosaur suggests that it had at least one advantage: It grew to adulthood much faster than its predators, giving it superiority in size. Wed, 06 Aug 2008 11:00:00 EDT http://www.sciencedaily.com/releases/2008/08/080805192720.htm http://www.sciencedaily.com/releases/2008/07/080729234140.htm Paleontologists in 2005 hailed research apparently showing that soft tissues had been recovered from dissolved dinosaur bones, but new research suggests the supposed recovered tissue is really just biofilm -- or slime. Wed, 30 Jul 2008 11:00:00 EDT http://www.sciencedaily.com/releases/2008/07/080729234140.htm http://www.sciencedaily.com/releases/2008/06/080613111410.htm Australia's links to South America have just gotten a bit closer, but not due to economic forces, rather fossil forces. Palaeontologists working in Australia identified a fossil that had previously only been found in South America. Sun, 15 Jun 2008 20:00:00 EDT http://www.sciencedaily.com/releases/2008/06/080613111410.htm http://www.sciencedaily.com/releases/2008/06/080606145623.htm Scientists who dig dinosaurs in Eastern Montana will now be able to chemically analyze fossils the same day they're excavated and before degrading begins. They'll also use cranes to excavate entire skeletons. Fri, 06 Jun 2008 00:00:00 EDT http://www.sciencedaily.com/releases/2008/06/080606145623.htm http://www.sciencedaily.com/releases/2008/04/080424140418.htm Putting more meat on the theory that dinosaurs' closest living relatives are modern-day birds, molecular analysis of a shred of 68-million-year-old Tyrannosaurus rex protein -- along with that of 21 modern species -- confirms that dinosaurs share common ancestry with chickens, ostriches, and to a lesser extent, alligators. Fri, 25 Apr 2008 11:00:00 EDT http://www.sciencedaily.com/releases/2008/04/080424140418.htm http://www.sciencedaily.com/releases/2008/03/080331084134.htm Looking for evidence of life on Mars or other planets? Finding cellulose microfibers would be the next best thing to a close encounter, according to new research. The new research also pushes back the earliest direct evidence of biological material on Earth by about 200 million years. Tue, 01 Apr 2008 05:00:00 EDT http://www.sciencedaily.com/releases/2008/03/080331084134.htm http://www.sciencedaily.com/releases/2008/02/080213193749.htm Two new 110 million-year-old dinosaurs unearthed in the Sahara Desert highlight the unusual meat-eaters that prowled southern continents during the Cretaceous Period. Named Kryptops and Eocarcharia the new fossils provide a glimpse of an earlier stage in the evolution of the bizarre meat-eaters of Gondwana, the southern landmass. Thu, 14 Feb 2008 08:00:00 EST http://www.sciencedaily.com/releases/2008/02/080213193749.htm http://www.sciencedaily.com/releases/2008/01/080114173919.htm Dinosaurs had pregnancies as early as age 8, far before they reached their maximum adult size, a new study finds. Scientists have identified the fossil bones of three female dinosaurs, each a different species, and it has become clear that dinosaurs exhibited rapid growth and early maturity, probably because they had a high early mortality rate. Tue, 15 Jan 2008 14:00:00 EST http://www.sciencedaily.com/releases/2008/01/080114173919.htm http://www.sciencedaily.com/releases/2007/12/071210214308.htm A new genus and species of dinosaur from the Jurassic has been discovered in Antarctica. The massive plant-eating primitive sauropodomorph is called Glacialisaurus hammeri and lived about 190 million years ago. The fossils were painstakingly removed from the ice and rock using jackhammers, rock saws and chisels under extremely difficult conditions over two field seasons. The long-necked herbivorous sauropods were the largest animals to walk the earth. They include Diplodocus and Apatosaurus. Wed, 12 Dec 2007 08:00:00 EST http://www.sciencedaily.com/releases/2007/12/071210214308.htm http://www.sciencedaily.com/releases/2007/12/071203103349.htm The amazing discovery of one of the finest and rarest dinosaur specimens ever unearthed -- a partially intact dino mummy found in the Hell Creek Formation Badlands of North Dakota was discovered by 16-year-old fossil hunter Tyler Lyson on his uncle's farm. Mon, 03 Dec 2007 11:00:00 EST http://www.sciencedaily.com/releases/2007/12/071203103349.htm http://www.sciencedaily.com/releases/2007/11/071109185424.htm Outback Queensland has become the focus of an international research project that is helping to decipher the evolution of Australian dinosaurs and their relationships to those of other southern continents. There is now an expectation that some of the dinosaur groups known from places such as South America should also have representatives in Australia. Thu, 15 Nov 2007 17:00:00 EST http://www.sciencedaily.com/releases/2007/11/071109185424.htm http://www.sciencedaily.com/releases/2007/11/071107074326.htm Scientists have discovered how dinosaurs used to breathe in what provides clues to how they evolved and how they might have lived. Theropod dinosaurs like the Velociraptor had similar respiratory systems to present-day diving birds, such as marine birds and wildfowl. Wed, 07 Nov 2007 11:00:00 EST http://www.sciencedaily.com/releases/2007/11/071107074326.htm http://www.sciencedaily.com/releases/2007/10/071019123615.htm The first fossil tracks belonging to large, carnivorous dinosaurs have been discovered in Victoria, Australia, by paleontologists. The tracks are especially significant for showing that large dinosaurs were living in a polar environment during the Cretaceous Period, when Australia was still joined to Antarctica and close to the South Pole. Mon, 22 Oct 2007 08:00:00 EDT http://www.sciencedaily.com/releases/2007/10/071019123615.htm http://www.sciencedaily.com/releases/2007/10/071003130907.htm The newest dinosaur species to emerge from Grand Staircase-Escalante National Monument had some serious bite, according to researchers. 'It was one of the most robust duck-billed dinosaurs ever,' said the museum paleontologist. 'It was a monster.' Wed, 03 Oct 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/10/071003130907.htm http://www.sciencedaily.com/releases/2007/10/071001172812.htm In public imagination, the sabre-toothed cat Smilodon ranks alongside Tyrannosaurus rex as the ultimate killing machine. Powerfully built, with upper canines like knives, Smilodon was a fearsome predator of Ice-Age America's lost giants. For more than 150 years, scientists have debated how this iconic predator used its ferocious fangs to kill its prey. Results will certainly put in dent in Smilodon's reputation. The innovative computer modeling shows it had a decidedly wimpy bite. Tue, 02 Oct 2007 11:00:00 EDT http://www.sciencedaily.com/releases/2007/10/071001172812.htm http://www.sciencedaily.com/releases/2007/09/070924104611.htm A dinosaur skeleton found 24 years ago near Choteau has finally been identified as a new species that links North American dinosaurs with Asian dinosaurs. The dinosaur would have weighed 30 to 40 pounds, walked on two feet and stood about three feet tall. The fossil came from sediment that's about 80 million years old. Mon, 24 Sep 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/09/070924104611.htm http://www.sciencedaily.com/releases/2007/08/070822081928.htm T. rex may have struggled to chase down speeding vehicles as the movie Jurassic Park would have us believe but the world's most fearsome carnivore was certainly no slouch, new research out suggests. Thu, 23 Aug 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/08/070822081928.htm http://www.sciencedaily.com/releases/2007/07/070727210215.htm Professional paleontologists from around the world are concerned about the misrepresentation of science at the newly opened Creation Museum in Petersburg, Kentucky. The Creation Museum has been marketed to the public as a "reasoned, logical defence" for young-earth creationism. The Society of Vertebrate Paleontology contends that the museum presents visitors with a view of earth history that has been scientifically disproven for over a century. Mon, 30 Jul 2007 23:00:00 EDT http://www.sciencedaily.com/releases/2007/07/070727210215.htm http://www.sciencedaily.com/releases/2007/06/070629091349.htm A dinosaur bone bed in southwest Edmonton that served as a feeding area for the direct ancestor of Tyrannosaurus rex has revealed that two dinosaurs, thought to have lived in different eras, actually lived at the same time. Scientists digging for bones at the site this year discovered fossils of Edmontosaurus and Saurolophus this year. Tue, 03 Jul 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/06/070629091349.htm http://www.sciencedaily.com/releases/2007/06/070609112847.htm Like investigators out of CSI or Cold Case, paleontologists are finding clues to a dinosaur's demise in its peculiar death pose. They argue that the open-mouthed, head-back posture of many dinosaur fossils tells of an agonized death from brain damage. The pose, known to neurologists as opisthotonus, denotes damage to the cerebellum, which can result from such causes as poisoning, suffocation, meningitis or bleeding. They dispute other presumed abiotic causes. Mon, 11 Jun 2007 11:00:00 EDT http://www.sciencedaily.com/releases/2007/06/070609112847.htm http://www.sciencedaily.com/releases/2007/05/070518105742.htm New evidence may help explain the brute strength of the tyrannosaurid, says a researcher whose finding demonstrates how a fused nasal bone helped turn the animal into a "zoological superweapon." Sun, 20 May 2007 17:00:00 EDT http://www.sciencedaily.com/releases/2007/05/070518105742.htm http://www.sciencedaily.com/releases/2007/05/070509161149.htm Fading dinosaur tracks unearthed in a Spanish quarry have been digitally preserved by experts using the latest laser technology. The Fumanya site, in the Bergueda region of central Catalonia, is so delicate that experts cannot get physically close enough to the tracks to examine them. Thu, 10 May 2007 11:00:00 EDT http://www.sciencedaily.com/releases/2007/05/070509161149.htm http://www.sciencedaily.com/releases/2007/04/070430102016.htm A new study provides fascinating insight into the factors geologists must account for when examining dinosaur tracks. The authors studied a range of larger tracks from the family of dinosaurs that includes the T. Rex and the tridactyl, and provide a guide for interpreting the effects of many different types of erosion on these invaluable impressions. Mon, 30 Apr 2007 17:00:00 EDT http://www.sciencedaily.com/releases/2007/04/070430102016.htm http://www.sciencedaily.com/releases/2007/04/070412140942.htm Scientists have confirmed the existence of protein in soft tissue recovered from the fossil bones of a 68 million-year-old Tyrannosaurus rex (T. rex) and a half-million-year-old mastodon. Thu, 12 Apr 2007 17:00:00 EDT http://www.sciencedaily.com/releases/2007/04/070412140942.htm