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 Sat, 26 Jul 2008 16:05:01 EDT Sat, 26 Jul 2008 16:05:01 EDT 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/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 http://www.sciencedaily.com/releases/2007/03/070307153009.htm They might be giants, but many dinosaurs apparently had genomes no larger than that of a modern hummingbird. So say scientists who've linked bone cell and genome size among living species and then used that new understanding to gauge the genome sizes of 31 species of extinct dinosaurs and birds, whose bone cells can be measured from the fossil record. Thu, 08 Mar 2007 08:00:00 EST http://www.sciencedaily.com/releases/2007/03/070307153009.htm http://www.sciencedaily.com/releases/2006/11/061129094125.htm Dunkleosteus terrelli may have been the world's first apex predator. The force of its bite was remarkably powerful: 11,000 pounds. The bladed dentition of this 400-million-year-old extinct fish focused the bite force into a small area, the fang tip, at an incredible force of 80,000 pounds per square inch. This is the strongest bite force of any fish ever, and rivals the bite of large alligators and T. rex. Wed, 29 Nov 2006 08:00:00 EST http://www.sciencedaily.com/releases/2006/11/061129094125.htm http://www.sciencedaily.com/releases/2006/10/061023192536.htm University of Colorado at Boulder researchers have discovered what appears to be the first evidence of parasites in the gut contents of a dinosaur, indicating even the giants that roamed Earth 75 million years ago were beset by stomach worms. Tue, 24 Oct 2006 08:00:00 EDT http://www.sciencedaily.com/releases/2006/10/061023192536.htm http://www.sciencedaily.com/releases/2006/10/061002082945.htm Four American Museum of Natural History paleontologists have overturned a 1950s claim that a theropod dinosaur called Coelophysis was a cannibal that ate juveniles of its own kind, forcing a revision of a popular story of dinosaur behavior that has been repeated many times in the scientific literature, popular media, and museum exhibits. In order to test the well-known cannibal-Coelophysis hypothesis, the team re-examined the anatomy of the two celebrated Coelophysis fossils said to exhibit cannibalism, as well as the structure of the bone found in the abdominal cavity of one of the specimens. Mon, 02 Oct 2006 11:00:00 EDT http://www.sciencedaily.com/releases/2006/10/061002082945.htm http://www.sciencedaily.com/releases/2006/08/060809233342.htm Fossils of a new hoofed mammal that resembles a cross between a dog and a hare which once roamed the Andes Mountains in southern Bolivia around 13 million years ago was discovered by Darin A. Croft, assistant professor of anatomy at the Case Western Reserve University School of Medicine and a research associate at the Cleveland Museum of Natural History. Thu, 10 Aug 2006 05:00:00 EDT http://www.sciencedaily.com/releases/2006/08/060809233342.htm http://www.sciencedaily.com/releases/2006/07/060713154238.htm Did non-avian dinosaurs show survival patterns akin to extant living dinosaurs, the birds, as did their crocodilian cousins? Or, did they mirror that of more distantly related dinosaurs that lived in a similar environment? A pile of bones from the North American tyrannosaur Albertosaurus sarcophagus may hold the answer. Tue, 18 Jul 2006 02:00:00 EDT http://www.sciencedaily.com/releases/2006/07/060713154238.htm http://www.sciencedaily.com/releases/2006/07/060713233840.htm A massive dinosaur death bed in Alberta has helped map out the animal's life span and thrown doubt on long-held theories about how one species lived, says new research conducted in part at the University of Alberta. Thu, 13 Jul 2006 11:00:00 EDT http://www.sciencedaily.com/releases/2006/07/060713233840.htm http://www.sciencedaily.com/releases/2006/07/060712073816.htm If you think dinosaurs are hot today, just think back to about 110 million years ago when they really ran hot and heavy. Wed, 12 Jul 2006 02:00:00 EDT http://www.sciencedaily.com/releases/2006/07/060712073816.htm http://www.sciencedaily.com/releases/2006/04/060418174738.htm At a news conference in the western Patagonian city where the news species was found, paleontologists have unveiled what may be one of the largest carnivorous dinosaurs known -- Mapusaurus roseae. Hundreds of Mapusaurus bones were found in sandstone 100 million years old. The remains include what may be one of the biggest meat-eating dinosaurs known, slightly larger than its older cousin, Giganotosaurus. Tue, 18 Apr 2006 08:00:00 EDT http://www.sciencedaily.com/releases/2006/04/060418174738.htm http://www.sciencedaily.com/releases/2006/04/060405175650.htm The researcher who discovered Paralititan stromeri, one of the most massive animals ever to walk the Earth, now is "picture-positive" about another dinosaur fossil find by a famous German researcher, Ernst Stromer. In a recent issue of the Journal of Paleontology , Washington University's Josh Smith reports the rediscovery of two photographs of the holotype of Spinosaurus aegyptiacus as it was reposited in the Palaontologische Staatssammlung Munchen prior to 1944, and later presumably lost in a bombing. Wed, 05 Apr 2006 08:00:00 EDT http://www.sciencedaily.com/releases/2006/04/060405175650.htm http://www.sciencedaily.com/releases/2006/03/060306214811.htm The nearly complete skull of a baby Triceratops -- a three-horned, tank-like dinosaur from the Cretaceous -- is now giving paleontologists insights into how these creatures grew. Described in this month's issue of the Journal of Vertebrate Paleontology, the fossil skull provides further evidence that the horns and frill were not used in sexual display, as many imagined. Rather, says UC Berkeley's Mark Goodwin, they were used in species recognition. Tue, 07 Mar 2006 05:00:00 EST http://www.sciencedaily.com/releases/2006/03/060306214811.htm http://www.sciencedaily.com/releases/2006/02/060209084256.htm A team of scientists at The George Washington University and the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing have discovered a new genus and species of dinosaur that is the oldest known and most primitive tyrannosauroid. The new basal tyrannosauroid, named Guanlong wucaii, sheds light on the early evolution and geographical distribution of coelurosaurs, small theropod dinosaurs that include the closest relatives of birds. Thu, 09 Feb 2006 02:00:00 EST http://www.sciencedaily.com/releases/2006/02/060209084256.htm http://www.sciencedaily.com/releases/2005/11/051116173945.htm When amateur fossil finder Van Turner discovered a small vertebra at a construction site near Dallas 17 years ago, he knew the creature was unlike anything in the fossil record. Scientists now know the significance of Turner's fossil as the origin of an extinct line of lizards with an evolutionary twist: a land-dwelling species that became fully aquatic, <i>Dallasaurus turneri</I>. Wed, 16 Nov 2005 08:00:00 EST http://www.sciencedaily.com/releases/2005/11/051116173945.htm http://www.sciencedaily.com/releases/2005/11/051110221017.htm Researchers have discovered evidence of an ancient sea creature that would have made Tyrannosaurus rex, think twice before stepping into the ocean. At the southern tip of South America, they found fossils of an entirely new species of ancient crocodile -- one whose massive jaws and jagged teeth would have made it the most fearsome predator in the sea. Fri, 11 Nov 2005 02:00:00 EST http://www.sciencedaily.com/releases/2005/11/051110221017.htm http://www.sciencedaily.com/releases/2005/10/051018071725.htm The tracks of a previously unknown, two-legged swimming dinosaur have been identified along the shoreline of an ancient inland sea that covered Wyoming 165 million years ago, according to a University of Colorado at Boulder graduate student. Wed, 19 Oct 2005 08:00:00 EDT http://www.sciencedaily.com/releases/2005/10/051018071725.htm http://www.sciencedaily.com/releases/2005/07/050719001803.htm What could the fierce dinosaur T. rex and a modern songbird such as the sparrow possibly have in common? Their pulmonary systems may have been more similar than scientists previously thought, according to new research from Ohio University and Harvard University. Tue, 19 Jul 2005 08:00:00 EDT http://www.sciencedaily.com/releases/2005/07/050719001803.htm http://www.sciencedaily.com/releases/2005/06/050602173113.htm Paleontologists at North Carolina State University have determined that a 68 million year-old Tyrannosaurus Rex fossil from Montana is that of a young female, and that she was producing eggs when she died. Fri, 03 Jun 2005 08:00:00 EDT http://www.sciencedaily.com/releases/2005/06/050602173113.htm http://www.sciencedaily.com/releases/2005/05/050522202457.htm The first fossil of a sleeping non-avian dinosaur has been described by a pair of American Museum of Natural History paleontologists. The small bird-like dinosaur is preserved in a remarkable life-like pose, with its head tucked between its forearm and trunk with its tail encircling its body. Mon, 23 May 2005 02:00:00 EDT http://www.sciencedaily.com/releases/2005/05/050522202457.htm http://www.sciencedaily.com/releases/2005/03/050325100541.htm Conventional wisdom among paleontologists states that when dinosaurs died and became fossilized, soft tissues didn’t preserve – the bones were essentially transformed into “rocks” through a gradual replacement of all organic material by minerals. New research by a North Carolina State University paleontologist, however, could literally turn that theory inside out. Fri, 25 Mar 2005 05:00:00 EST http://www.sciencedaily.com/releases/2005/03/050325100541.htm http://www.sciencedaily.com/releases/2004/10/041018084253.htm Hans Larsson, a McGill University palaeontologist (located in Montreal, Canada), has found physical proof that Canada&#39;s Arctic regions once had a Jurassic era. Scientists have suspected that dinosaurs lived in Canada&#39;s great north eons ago, yet it remained an unproven theory, since no bones had ever been uncovered. Mon, 18 Oct 2004 05:00:00 EDT http://www.sciencedaily.com/releases/2004/10/041018084253.htm http://www.sciencedaily.com/releases/2004/08/040812053920.htm Most teenagers have growing pains, but none probably compared to those of Tyrannosaurus rex as it ascended to adulthood more than 65 million years ago, according to a Florida State University researcher. Thu, 12 Aug 2004 00:00:00 EDT http://www.sciencedaily.com/releases/2004/08/040812053920.htm http://www.sciencedaily.com/releases/2004/02/040210074742.htm A graduate student in earth and planetary sciences in Arts and Sciences at Washington University in St. Louis has combed the dinosaur fossil record from T Rex to songbirds and has compiled the first quantitative analysis of the quality and congruence of that record. Tue, 10 Feb 2004 00:00:00 EST http://www.sciencedaily.com/releases/2004/02/040210074742.htm http://www.sciencedaily.com/releases/2004/01/040113081137.htm Cringe. That&#39;s what most people do when they look at fossils of the impressive, eight-inch-long canines of the now extinct sabertooth tiger, Smilodon fatalis. But Frank Mendel, a University at Buffalo anatomist, sees those big teeth and thinks: How in the world did they use those fangs? Tue, 13 Jan 2004 00:00:00 EST http://www.sciencedaily.com/releases/2004/01/040113081137.htm http://www.sciencedaily.com/releases/2002/05/020508072510.htm Imagine a one-ton Big Bird à la Sesame Street, but instead of friendly “hands,” he has Freddie Claws. That’s basically what the Therizinosaurid dinosaur looks like that geologist David Gillette’s team from the Museum of Northern Arizona (MNA) found in Kane County, Utah. Wed, 08 May 2002 00:00:00 EDT http://www.sciencedaily.com/releases/2002/05/020508072510.htm http://www.sciencedaily.com/releases/2002/03/020328073615.htm Picture the jaws of a 12-foot alligator clamping down on its prey. Now think of the jolt one would feel by tying a rope to a small pickup truck and trying to hold on after dropping it from the roof of a tall building. What&#39;s the point? Well, a Florida State University researcher has discovered that the strength of the alligator&#39;s bite and the jolt one would feel when the truck reached the end of its rope are nearly identical. Fri, 29 Mar 2002 00:00:00 EST http://www.sciencedaily.com/releases/2002/03/020328073615.htm http://www.sciencedaily.com/releases/2002/02/020228072635.htm King of the Cretaceous, Tyrannosaurus rex stood on two powerful hind limbs and terrorized potential prey with its elephantine size and lethal jaws. The dinosaur was big and bad. But was it fast? Mon, 04 Mar 2002 00:00:00 EST http://www.sciencedaily.com/releases/2002/02/020228072635.htm