| 单词 | tyrannosaur |
| 例句 | Some months later, the C.G.I. group presented Spielberg with footage of a tyrannosaur marauding across the screen. Hollywood’s Turn Against Digital Effects 2016-01-20T05:00:00Z After about three weeks spent unearthing the first dinosaur, they discovered a tyrannosaur claw. Dinosaur Skeletons Headed to Auction, Not Museum 2013-07-29T22:33:04Z The hairless apes walking through the American Museum of Natural History can’t get enough of tyrannosaurs, especially the last and largest of the family, given the appropriately imperial name Tyrannosaurus rex. T. Rex Like You Haven’t Seen Him: With Feathers 2019-03-07T05:00:00Z This is poor in pretty much every conceivable way, and the man-in-a-suit tyrannosaurs are hilariously bad as they are almost literally incapable of movement and can barely stand. Dinosaurs on film – fun, fiction and failures 2013-05-16T16:12:00Z These fossils are fairly rare and scientifically important, which should be self-evident on the basis of the fact that it is now understood to be a Tarbosaur, or an Asian tyrannosaur. Nic Cage’s dino bones blues: The scientific ethics and international crimes behind the eccentric actor’s latest Hollywood-scale drama 2015-12-23T05:00:00Z This is a piece about tyrannosaurs, the undefeated bosses of the Cretaceous Period, stomping and chomping their way across earth’s northern supercontinent. T. Rex Like You Haven’t Seen Him: With Feathers 2019-03-07T05:00:00Z Scientists now believe that all tyrannosaurs had feathers; while small species like Dilong would have been covered with them, the adult T. rex probably had just patches for display. T. Rex Like You Haven’t Seen Him: With Feathers 2019-03-07T05:00:00Z They could settle long-running scientific debates over whether the pygmy tyrannosaur existed as a separate genus or was simply a juvenile T. rex, and whether it hunted as well as scavenged. Dinosaur Skeletons Headed to Auction, Not Museum 2013-07-29T22:33:04Z Through their analysis of bite forces and the stress all that gobbling put on tyrannosaur craniums, the researchers showed that tyrannosaurs steadily built up their bone-crunching powers over the eons. How the T. Rex Built Up That Bone-Crushing Bite 2023-11-10T05:00:00Z They overshadowed all other dinosaurs, from the duck-billed hadrosaurs and the horned ceratopsians to the armored ankylosaurs and predatory tyrannosaurs. How Sauropod Dinosaurs Became the Biggest Land Animals Again and Again 2023-08-15T04:00:00Z During the Early Cretaceous, the area’s volatile volcanoes buried myriad creatures, including feathered dinosaurs and early tyrannosaurs, in debris. Mammals Preyed on Much Larger Dinosaurs, a Stunning New Fossil Reveals 2023-07-18T04:00:00Z With this evidence and other clues from the dinosaurs’ anatomy, the study makes a good case for lipped tyrannosaurs, said University of Maryland paleontologist Thomas Holtz, who was not involved with the study. Has T. rex lost its bite? Menacing snarl may be wrong 2023-03-30T04:00:00Z Paleontologists know little about what giant, bone-crushing tyrannosaurs were like as babies. Tiny Tyrannosaurs Used the Buddy System 2022-12-26T05:00:00Z It was not easy for the researchers to build 3-D skull models of nine tyrannosaur species for their analysis. How the T. Rex Built Up That Bone-Crushing Bite 2023-11-10T05:00:00Z While these clubs may have evolved to help ankylosaurs bash each other, they were still capable of delivering a debilitating blow below a tyrannosaur’s knee. The Ankylosaur’s Club-Tail Wasn’t Only Swinging at T. Rex 2022-12-06T05:00:00Z The skull shows bite marks from a large predatory dinosaur, probably a tyrannosaur, although it is uncertain whether this was from active predation while Bisticeratops was alive or due to scavenging after it died. The unusual story behind a newly identified dinosaur’s name 2022-09-03T04:00:00Z Two other Cretaceous theropod lineages - tyrannosaurs, which included North America's T. rex, and abelisaurs, which included South America's Carnotaurus - also evolved stubby arms. Argentine 'gargoyle' shows how huge predatory dinosaurs evolved 2022-07-07T04:00:00Z But now miniature trackways, found in rock roughly 72 million years old, offer evidence that baby tyrannosaurs traveled in pairs. Tiny Tyrannosaurs Used the Buddy System 2022-12-26T05:00:00Z Some researchers have argued it represents a separate genus of pygmy tyrannosaur. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z Because of their seemingly indestructible nature, paleoartists and researchers alike have spent decades hypothetically pitting these plant-powered tanks against tyrannosaurs and other apex carnivores. The Ankylosaur’s Club-Tail Wasn’t Only Swinging at T. Rex 2022-12-06T05:00:00Z Reporting on Clarke’s work, some journalists wrote the fearsome tyrannosaurs might have “honked” rather than “roared.” Fossils Reveal When Animals Started Making Noise 2022-01-10T05:00:00Z The 1,000-kilogram dinosaur had serrated teeth and was likely an apex predator, and its existence may have delayed the rise of large tyrannosaurs. In Case You Missed It 2021-12-11T05:00:00Z Existing knowledge about tyrannosaur behavior comes mostly from fossilized bitten bones and a few scarce tracks. Tiny Tyrannosaurs Used the Buddy System 2022-12-26T05:00:00Z Discovered in 1902, the animal is the last and largest of the many, smaller tyrannosaurs that preceded it in the dinosaur era. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z The exquisitely preserved ankylosaur skeleton, which sports a full suit of armor plates called osteoderms, was accidentally unearthed in 2014 by commercial fossil hunters excavating a nearby tyrannosaur in Montana’s Judith River Formation. The Ankylosaur’s Club-Tail Wasn’t Only Swinging at T. Rex 2022-12-06T05:00:00Z The next time you watch Jurassic Park, imagine honking hadrosaurs, trumpeting tyrannosaurs and hissing brachiosaurs. Fossils Reveal When Animals Started Making Noise 2022-01-10T05:00:00Z The team found microfossils from at least seven different late Cretaceous dinosaur species, including tyrannosaurs, ridge-headed ceratopsians and duck-billed hadrosaurs. Tiny Fossils From Alaska Reveal Dinosaur Life in the Arctic 2021-06-24T04:00:00Z Injured skulls show that tyrannosaurs fought by biting one another on the face, and trackways found in British Columbia indicate that adults sometimes socialized together. Tiny Tyrannosaurs Used the Buddy System 2022-12-26T05:00:00Z Some scientists argued it was evidence of major differences between females and males of the species, said Thomas Holtz, a paleontologist at the University of Maryland who specializes in tyrannosaurs. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z One of the main takeaways from this is that, at least for this group of tyrannosaurs, they likely hunted in packs rather than on a solitary basis. New paleontology find reveals that tyrannosaurs hunted in packs 2021-05-01T04:00:00Z Kristi Curry Rogers, a biology professor at Macalester College, said this research is a “good start” but more evidence would be needed before determining that the tyrannosaurs were living in a social group. Mass fossil site may prove tyrannosaurs lived in packs 2021-04-19T04:00:00Z Baby tyrannosaurs were 'the size of a Border Collie' Yorkshire's 'largest ever dinosaur print' discovered on coast 2021-04-13T04:00:00Z Several species of dinosaur changed drastically as they grew: Young tyrannosaurs were swift pursuit predators, while adults were lumbering behemoths. Was this dinosaur more subaquatic killer or giant wading bird? 2021-01-26T05:00:00Z Distinctive tyrannosaur features were found in analysis of the three-centimetre long jaw bone, including a "pronounced chin", which the team say suggests physical traits were also present before they hatched. Baby tyrannosaurs dinosaurs were the 'size of a Border Collie' 2021-01-25T05:00:00Z This argument, while already accepted for certain types of dinosaurs "is still a bit contentious among tyrannosaur specialists," Titus observed. New paleontology find reveals that tyrannosaurs hunted in packs 2021-05-01T04:00:00Z “It is a little tougher to be so sure that these data mean that these tyrannosaurs lived together in the good times,” Rogers said. Mass fossil site may prove tyrannosaurs lived in packs 2021-04-19T04:00:00Z It’s classified among a group known as theropods, which also include tyrannosaurs and velociraptors. A Strange Dinosaur May Have Swum the Rivers of Africa 2020-04-29T04:00:00Z Where Dineobellator thrived on plains, tyrannosaurs were probably ambush predators that kept close to forested areas. Fossils Show Raptors Prowled North America Late in Dinosaurs’ Era 2020-03-26T04:00:00Z The new species was at least 2.5 million years older than its closest relatives, which may provide insight into when tyrannosaurs grew from small carnivores into the apex predators that perished 66 million years ago. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z The most challenging aspect of this study was, as Titus explained, proving that the tyrannosaurs in question died at both the same time and in the same location. New paleontology find reveals that tyrannosaurs hunted in packs 2021-05-01T04:00:00Z The social tyrannosaurs theory began over 20 years ago when more than a dozen tyrannosaurs were found at a site in Alberta, Canada. Mass fossil site may prove tyrannosaurs lived in packs 2021-04-19T04:00:00Z A new species of tyrannosaur that stalked North America around 80 million years ago has been discovered by scientists in Canada. 'Reaper of Death' T-Rex found in Canada 2020-02-11T05:00:00Z This hunting strategy distinguished Dineobellator from the enormous tyrannosaurs — cousins of T. rex — with which it shared this Cretaceous landscape. Fossils Show Raptors Prowled North America Late in Dinosaurs’ Era 2020-03-26T04:00:00Z “The ridges were things that we had not seen before in another tyrannosaur, especially not another tyrannosaur from Alberta,” he said. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z A new study published in the scientific journal PeerJ, based on a paleontology discovery of a number of tyrannosaurs of the species Teratophoneus, reveals that those tyrannosaurs hunted in packs. New paleontology find reveals that tyrannosaurs hunted in packs 2021-05-01T04:00:00Z Another mass death site in Montana again raised the possibility of social tyrannosaurs. Mass fossil site may prove tyrannosaurs lived in packs 2021-04-19T04:00:00Z By the late Cretaceous Period, around 80 million years ago, North American tyrannosaurs had become enormous beasts. 'Reaper of Death' T-Rex found in Canada 2020-02-11T05:00:00Z The specimen was discovered by Jared Voris, a PhD student at Calgary, and is the first new tyrannosaur species found for 50 years in Canada. 'Reaper of death': scientists discover new dinosaur species related to T rex 2020-02-10T05:00:00Z As the team uncovers more specimens, she added, they will likely find more differences between Thanatotheristes degrootorum and the other tyrannosaurs. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z Paleontologists discovered a new species of tyrannosaur that roamed the earth 79.5 million years ago, after identifying a fossil uncovered in Canada. New 'reaper of death' Tyrannosaurus rex species discovered in Canada 2020-02-10T05:00:00Z Ten million years before T. rex, up and down the ancient North American subcontinent of Laramidia, there stalked a variety of different tyrannosaur species. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z Researchers say the new discovery has given them insights into the evolution of tyrannosaurs. 'Reaper of Death' T-Rex found in Canada 2020-02-11T05:00:00Z Then there’s the tyrannosaur whose rival broke a tooth off inside its jaw. The Veterinarian Will See Your Dinosaur Now 2019-10-04T04:00:00Z Mr. Voris also observed other features that set the tyrannosaur apart from its relatives, such as its oval-shaped cheekbone and aspects of its skull. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z "These are like the tyrannosaurs of the ant world," Grimaldi says, "that you would never know existed if you studied modern living fauna." Fossils in Burmese amber offer an exquisite view of dinosaur times—and an ethical minefield 2019-05-23T04:00:00Z The question is how to identify which tyrannosaur we’re looking at. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z Introducing the first new species of tyrannosaur discovered in Canada in 50 years. 'Reaper of Death' T-Rex found in Canada 2020-02-11T05:00:00Z This is the broader group to which all tyrannosaurs belong, but the term is usually used in reference to relatively early or archaic tyrannosaurs. Tiny Tyrannosaur Named the "Coyote King" 2019-05-18T04:00:00Z “Now, with the new species we’ve actually pushed back the record of tyrannosaurs.” Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z "Suski" lived earlier in time, however - 92 million years ago, compared with 80–66 million years ago for the biggest members of the tyrannosaur dynasty. Small tyrannosaur 'was cousin of T. rex' 2019-05-07T04:00:00Z Along with Gorgosaurus, this was one of two tyrannosaurs that ran around Cretaceous Alberta around 76 million years ago. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z The dinosaur lived in the late Cretaceous Period, making it the oldest known tyrannosaur from North America. 'Reaper of Death' T-Rex found in Canada 2020-02-11T05:00:00Z And Suskityrannus is just one of several new tyrannosaurs named just this year. Tiny Tyrannosaur Named the "Coyote King" 2019-05-18T04:00:00Z The scientists knew it was a tyrannosaur, but not what kind. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z “Suskityrannus is the first really good record of the early tyrannosaurs in North America,” he wrote in an email. Meet the T. rex cousin who you could literally look down on 2019-05-06T04:00:00Z Given the fame of tyrannosaurs, and the last of their kind in particular, these new findings raise questions about the identity of other juvenile tyrannosaur skeletons. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z Analysis of Son of Sampson’s limb proportions might inform the debate over whether small tyrannosaurs from North America are simply T. rex juveniles or should be recognized as a distinct group named Nanotyrannus. Baby tyrannosaur’s eBay auction sparks outrage 2019-04-15T04:00:00Z For most of their history - over 50 million years - North American tyrannosaurs lived in the shadow of other carnivores. Tiny Tyrannosaur Named the "Coyote King" 2019-05-18T04:00:00Z The long and deep snout was similar to Daspletosaurus, another tyrannosaur group, suggesting the two were closely related. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z And, by tyrannosaur standards, making it to 28 was no small feat. Is "Scotty" the Biggest T. rex ? Maybe Not. 2019-03-31T04:00:00Z Just because one fossil shifts identity doesn’t mean that the past decade of dedicated work on juvenile tyrannosaurs is overturned. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z “The issue here is reproducibility in science,” says Thomas Carr, a paleontologist who studies the growth of tyrannosaurs at Carthage College in Kenosha, Wisconsin. Baby tyrannosaur’s eBay auction sparks outrage 2019-04-15T04:00:00Z There are small tyrannosaurs, small horned dinosaurs, and small hadrosaurs, but Nesbitt and colleagues also note that this slice of time is significant for what’s missing. Tiny Tyrannosaur Named the "Coyote King" 2019-05-18T04:00:00Z “Despite its scrappy remains, it is an important new animal that borders a vexing gap in the tyrannosaur fossil record,” Dr. Zanno said. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z Inside the nodule was a broken tyrannosaur tooth; the hadrosaur had been bitten by a tyrannosaur and escaped. The Day the Dinosaurs Died 2019-03-29T04:00:00Z As the tyrannosaur rush of the early 21st century continues, it’s a point worth remembering. Tiny Tyrant Gets a New Identity 2019-12-07T05:00:00Z Multiple horned dinosaurs, armored dinosaurs, hadrosaurs, tyrannosaurs, and more. There are More Dinosaurs to Discover from the Time of T. rex 2019-03-16T04:00:00Z The findings frequently are driven by the discoveries of many fossils of smaller tyrannosaurs worldwide. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z One of the paper’s co-authors, Darla Zelenitsky, a paleontologist at the University of Calgary, defended the classification, saying the ridges on the tyrannosaur’s upper jaws and its distinct cheekbones warranted the new name. Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z Their latest discovery is a tiny tyrannosaur that lived in the shadow of larger predators some 96 million years ago. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z But exactly how they took over is unclear, because of a gap in the tyrannosaur fossil record: North American specimens that lived between about 150 million and 80 million years ago. This goat-size T. rex cousin could reveal how the famed dino got so big 2019-02-21T05:00:00Z By the close of the Cretaceous 66 million years ago, dinosaur communities don’t look as diverse - there’s a tyrannosaur, a horned dinosaur, a hadrosaur, and so on. There are More Dinosaurs to Discover from the Time of T. rex 2019-03-16T04:00:00Z The tyrannosaurs were successful, and over time evolved. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z Now, paleontologists in the province have announced the discovery of Canada’s oldest known tyrannosaur: Thanatotheristes degrootorum, or “the Reaper of Death.” Canada’s Newest Tyrannosaur Is Named for a ‘Reaper of Death’ 2020-02-11T05:00:00Z Called “Moros intrepidus,” the new species is the oldest Cretaceous-period tyrannosaur ever found in North America and among the smallest in the world, measuring only about as big as a deer. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z Together with Asian fossils, the find means tyrannosaurs probably expanded their size relatively quickly—during the past 16 million years of their 100-million-year history. This goat-size T. rex cousin could reveal how the famed dino got so big 2019-02-21T05:00:00Z The diminutive tyrannosaur reveals crucial new information about how T. rex established itself as a dominant carnivore in North America. Teeny T. rex relative found in US 2019-02-21T05:00:00Z “People who study dinosaurs say theropods get all the attention. People who study theropods, say, oh, tyrannosaurs get all the attention.” Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z An immediate mandate was that our tyrannosaurs do not do the open-mouthed, million-lions-volume roaring so ubiquitous elsewhere, and that the pterosaurs do not screech like mythical griffins. Dinosaurs in the Wild: An Inside View 2018-07-28T04:00:00Z The next steps were to find whether the tiny tyrannosaur belonged to a new species or was a juvenile of a known species. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z Puncture-pull feeding - which is pretty much exactly what it sounds like - is a hallmark of the huge tyrannosaurs that would dominate western North America about 70 million years after the era of Allosaurus. Paleontologists Investigate a Jurassic Bite 2018-05-12T04:00:00Z Early in their evolution, tyrannosaurs were small, but at some stage, the hulking T. rex along with others emerged as apex predators. Teeny T. rex relative found in US 2019-02-21T05:00:00Z And among tyrannosaurs, there is only one star, the king. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z I will say that there’s a hungry mosasaur in the marine inlet near the base, that Dakoraptors don’t enjoy sauropods walking through their nesting colonies, and that tyrannosaurs are big and dangerous. Dinosaurs in the Wild: An Inside View 2018-07-28T04:00:00Z Dr. Canoville saw evidence suggesting the tyrannosaur was at least 6 or 7 years old. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z “Islands are notorious for throwing up oddities. We have a bunch of weird dinosaurs from Hateg and a lack of really big carnivores, so the pterosaurs were basically tyrannosaur surrogates.” Ancient Flying Predator Found in Transylvania 2018-05-08T04:00:00Z Fossil evidence in tyrannosaur dung indicates that these large predators chomped through bones. Scratches on dinosaur teeth reveal their fierce, efficient eating habits 2018-04-27T04:00:00Z The superfamily that contains the tyrannosaurs includes more than two dozen other dinosaurs. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z It wasn't hard to imagine Duerksen marveling at a tyrannosaur when he was a kid, too. T. rex fossil survived millions of years. But at this museum it needs a hand battling dust 2018-02-28T05:00:00Z The growth marks, she said, were also spaced closer and closer together, indicating the tyrannosaur was nearing full maturity when it died. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z Even with all the necessary caveats in place, looking at these prehistoric footfalls conjures an image of tyrannosaurs flocking together. Dinosaurs of a Feather 2017-12-29T05:00:00Z Stanley agrees with critics that the arms atrophied during tyrannosaur evolution, with the giant jaws taking over their grasping function. T. Rex’s Tiny Arms May Have Been Vicious Weapons 2017-11-02T04:00:00Z Most of the early tyrannosaurs were small, some as small as a chicken. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z Luckily for the winged giant, it probably was not on the tyrannosaur menu—scientists think the azhdarchids could have catapulted themselves skyward from a standing start in a matter of seconds. Ancient Winged Terror Was One of the Largest Animals to Fly 2017-10-31T04:00:00Z Thomas Carr, a paleontologist from Carthage College in Wisconsin who was not involved in the study, said the finding “lifts the lid on what the earliest tyrannosaurs in North America really looked like.” Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z On a recent outing, Titus, 53, hiked briskly past gnarled junipers and pinyons to a spot deep in the desert wilderness where two years ago he discovered a rare tyrannosaur skeleton. Trump's push for coal mining will endanger dinosaur discoveries in Utah, scientists fear 2017-10-26T04:00:00Z The three-foot-long arms would also give a full-grown T. rex an awkwardly short reach for slashing, said Thomas Holtz, a tyrannosaur expert at the University of Maryland in College Park. T. Rex’s Tiny Arms May Have Been Vicious Weapons 2017-11-02T04:00:00Z These earlier tyrannosaurs were not the top predators for most of those 100 million years. Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z These are the carnivores that we typically envision of when we think “tyrannosaur”, complete with big heads and spindly arms. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z Stephen Brusatte, a paleontologist at the University of Edinburgh in Scotland who was also not involved in the paper, said the discovery pushed the tyrannosaur mystery forward in time. Tiny Tyrannosaur Hints at How T. Rex Became King 2019-02-21T05:00:00Z This raises an interesting question: Why would the tyrannosaurs evolve feathers only to lose them later on in species like T. rex? Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z “In such a position the tyrannosaur wouldn't be able to use its far more powerful armament: its massively powerful jaws.” T. Rex’s Tiny Arms May Have Been Vicious Weapons 2017-11-02T04:00:00Z “For most of their history, tyrannosaurs weren’t that special.” Tyrannosaurus Rex: The Once and Future King 2019-03-04T05:00:00Z The preservation of scales on tyrannosaurs shows that they had scales, just like any other dinosaurs. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z Was Tyrannosaurus rex—the giant king of the tyrannosaurs—actually sporting bright plumage? World’s only fossils of T. rex skin suggest it was covered in scales—not feathers 2017-06-06T04:00:00Z Clarke adds that in the largest members of the tyrannosaur group, bare patches would probably also be bigger. Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z “There were all sorts of speculation on what laid the eggs; was it the tyrannosaur?” said Darla Zelenitsky, a paleontologist at the University of Calgary in Alberta. Baby Louie, the Dinosaur Orphan, Finds Its Species at Last 2017-05-09T04:00:00Z Given that time travel is an impossibility, we’ll never know if daspletosaurus, T. rex, or any other tyrannosaur species nuzzled to set the mood. Bloodthirsty chomp-monster or sensitive lover? Time to rethink Tyrannosaurus rex | Brian Switek 2017-04-03T04:00:00Z The argument goes that a coat of fuzz would have insulated large, hot-blooded tyrannosaurs and made it easier for them to overheat. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z Dr. Carr and his colleagues made their conclusions based on a tyrannosaur specimen that was found 25 years ago, but only just now got a name. Unmasking the Fearsome Face of a Tyrannosaur 2017-03-31T04:00:00Z However, Brusatte says, concluding that big tyrannosaurs like T. rex were totally featherless would be premature. Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z Scientists believe the dinosaur and other tyrannosaurs including T rex wore a mask of large, flat scales, with regions of tough and protective amour-like skin around the snout and jaws. Tyrannosaurus rex was a sensitive lover, new dinosaur discovery suggests 2017-03-30T04:00:00Z Even if palaeontologists were fortunate enough to find two tyrannosaurs buried snout to snout, other explanations could be derived from the bones. Bloodthirsty chomp-monster or sensitive lover? Time to rethink Tyrannosaurus rex | Brian Switek 2017-04-03T04:00:00Z Therefore, much like elephants, tyrannosaurs would have lost their fluff to keep cool. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z The team also discovered that tyrannosaur snouts and jaws were most likely laced with nerves that made their skin supersensitive, comparable to a human’s fingertips. Unmasking the Fearsome Face of a Tyrannosaur 2017-03-31T04:00:00Z Fossils suggest this tyrannosaur sported feather-like filaments around eight inches long across much of its body. Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z It was the face of D horneri that yielded the most important information, opening a new window on tyrannosaur evolution and anatomy. Tyrannosaurus rex was a sensitive lover, new dinosaur discovery suggests 2017-03-30T04:00:00Z There are plenty of aspects of tyrannosaur life that, much like the animals themselves, appear fuzzy. Bloodthirsty chomp-monster or sensitive lover? Time to rethink Tyrannosaurus rex | Brian Switek 2017-04-03T04:00:00Z We know some early tyrannosaurs had both feathers and scales. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z In the twilight of the Age of Dinosaurs, tyrannosaurs were the apex predators. Tyrannosaur’s sensitive skin may have helped it capture prey 2017-03-30T04:00:00Z “It wouldn't surprise me if some of these dinosaurs, particularly really gigantic ones, reduced or lost their feathers,” says Stephen Brusatte, a tyrannosaur expert at the University of Edinburgh. Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z The Saurischian branch includes both sauropods like the herbivorous diplodocus, and theropods like the meat-eating tyrannosaurs. Shaking Up the Dinosaur Family Tree 2017-03-22T04:00:00Z We have almost always thought of tyrannosaurs in terms of their predatory capabilities and have only considered the rest of their daily lives as an afterthought. Bloodthirsty chomp-monster or sensitive lover? Time to rethink Tyrannosaurus rex | Brian Switek 2017-04-03T04:00:00Z We also know that the last tyrannosaurs, descended from fuzzy ancestors, had scales on parts of their bodies. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z Their analysis suggests that tyrannosaurs’ faces were covered with flat scales, similar to modern-day crocodiles. Tyrannosaur’s sensitive skin may have helped it capture prey 2017-03-30T04:00:00Z “It's still very possible, even likely in my mind, that some big tyrannosaurs were fluffy Big Birds from hell.” Here’s What It Would Feel Like to Pet a T. Rex 2017-06-06T04:00:00Z Clearly it’s a good time for tyrannosaurs and indeed tyrannosaur specialists. New Tyrannosaurus rex skeleton latest in a flurry of finds 2016-08-31T04:00:00Z No one has found the skeleton of a tyrannosaur that died while dreaming, but rare skeletons and fossilised impressions indicate that theropod dinosaurs – the wider family to which tyrannosaurs belonged – dozed much like modern birds. Bloodthirsty chomp-monster or sensitive lover? Time to rethink Tyrannosaurus rex | Brian Switek 2017-04-03T04:00:00Z Despite the conclusions of the new study, totally naked tyrannosaurs seem unlikely. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z But a fossil representing a new tyrannosaur species, dug up in Montana, may help show their sensitive side. Tyrannosaur’s sensitive skin may have helped it capture prey 2017-03-30T04:00:00Z He said that the earliest ancestors of tyrannosaurs lived some 165 million years ago and had long arms with three digits. New Dinosaur and T. Rex Were Brothers in Tiny Arms 2016-07-13T04:00:00Z "Gualicho did not inherit this forelimb anatomy from an ancestor it shared with tyrannosaurs. Rather, it evolved independently in the two groups," Makovicky said. Fearsome Argentine dinosaur had pitifully puny arms 2016-07-13T04:00:00Z Before long the world was full of trilobites and anemones, then fish, ferns, pterodactyls, tyrannosaurs, bees, whales, cacti, kangaroos, not to mention us. This gene helps prevent cancer. Did it also give rise to all complex life? 2016-04-26T04:00:00Z But we still lack a delicate, fine-scale, definitive view of what Late Cretaceous tyrannosaurs really looked like. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z We learned that tyrannosaurs got smart before they got big, and why Ben Affleck chose to play Batman. Your Friday Briefing 2016-03-18T04:00:00Z "It's hinting that tyrannosaurs weren’t really that big in the middle part of the Cretaceous, and they probably got super big at the end of the Cretaceous." Horse-sized tyrannosaur may be long-sought missing link in T.rex evolution 2016-03-14T04:00:00Z While Tyrannosaurus rex topped the food chain 70m years ago, the earliest known tyrannosaurs were far less impressive beasts. Discovery of brainy T rex ancestor sheds light on dinosaur's dominance 2016-03-14T04:00:00Z Dr. Brusatte joined an international team of researchers including Dr. Sues and Dr. Averianov in the analysis of the new tyrannosaur. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z Even within the tyrannosaur lineage, there are two earlier animals that unequivocally sport fluff. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z Right after the gap, at about 80 million years ago, tyrannosaurs were multi-ton behemoths like T. rex. A dinosaur find in Central Asia is shedding light on how the massive T. rex and its tyrannosaur cousins evolved from much more modestly sized creatures 2016-03-14T04:00:00Z The discovery strongly suggests that tyrannosaurs got smart before they got large. Horse-sized tyrannosaur may be long-sought missing link in T.rex evolution 2016-03-14T04:00:00Z “It seems to show that tyrannosaurs evolved their huge size really late in their history, right towards the end of the age of dinosaurs, and maybe quite suddenly.” Discovery of brainy T rex ancestor sheds light on dinosaur's dominance 2016-03-14T04:00:00Z But a CT scan of the braincase showed the shape of the brain was similar to the later tyrannosaurs, and an inner ear structure that was tuned to low frequencies. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z So this proves the biggest, baddest tyrannosaurs were totally scaly, right? Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z The discovery helps fill in a frustrating gap in the tyrannosaur fossil record. A dinosaur find in Central Asia is shedding light on how the massive T. rex and its tyrannosaur cousins evolved from much more modestly sized creatures 2016-03-14T04:00:00Z He concluded that it was from a new species of tyrannosaur. Horse-sized tyrannosaur may be long-sought missing link in T.rex evolution 2016-03-14T04:00:00Z No longer overshadowed by allosaurs and their kind, the tyrannosaurs took over. Discovery of brainy T rex ancestor sheds light on dinosaur's dominance 2016-03-14T04:00:00Z Timurlengia does not explain why tyrannosaurs got big, but Dr. Sues said he suspected that an unusually warm climate, one of the warmest in Earth’s history, a played an important role. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z We also have good reason to believe that large tyrannosaurs were fluffier than we know. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z "This tells us that tyrannosaurs got smart before they got big." From wee rex to T. rex: modest forerunner to huge predator found 2016-03-14T04:00:00Z The find suggests that the tyrannosaur “honed its sensory toolbox before it gained massive size”, says Christopher Brochu, who studies the evolutionary history of dinosaurs at the University of Iowa in Iowa City. Horse-sized dinosaur sheds light on T. rex’s origins 2016-03-13T05:00:00Z "A time where tyrannosaur remains are virtually unknown." A small, but surprisingly smart tyrannosaur has been uncovered 2016-03-14T04:00:00Z For tens of millions of years, tyrannosaurs remained small. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z Both were relatively distant relatives of T. rex, and lived tens of millions of years earlier, but they definitively pin fuzz to the tyrannosaur lineage. Long Live the Fuzzy T. rex 2017-07-01T04:00:00Z The fact Timurlengia was still relatively small 80 million years after tyrannosaurs first appeared showed their immense size occurred suddenly, late in their evolutionary history. From wee rex to T. rex: modest forerunner to huge predator found 2016-03-14T04:00:00Z It is not known, however, whether the dinosaur possessed later tyrannosaurs’ keen sense of smell. Horse-sized dinosaur sheds light on T. rex’s origins 2016-03-13T05:00:00Z But the Timurlengia's anatomy "tells us that tyrannosaurs got smart before they got big." A small, but surprisingly smart tyrannosaur has been uncovered 2016-03-14T04:00:00Z The very first tyrannosaurs, which arose about 100 million years earlier, were small, about the size of a person. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z Other bone fragments all pointed the same direction: to a new tyrannosaur about the size of a horse, seemingly caught between the early and late tyrannosaurs in terms of age, size, and sensory ability. ‘Missing Link’ in Tyrannosaur Family Tree Discovered By measuring the size of the tracks and distance between them Persons verified that they were made by a large theropod, like a tyrannosaur, about 66 million years ago. Wyoming dinosaur footprint officially measured 2016-03-08T05:00:00Z Still, the new find is only a single data point in a 20-million-year evolutionary period; Timurlengia might not be typical of other tyrannosaurs that were alive at the time. Horse-sized dinosaur sheds light on T. rex’s origins 2016-03-13T05:00:00Z He would also like to study other tyrannosaurs to learn about how their brains and sense organs changed throughout evolution. A small, but surprisingly smart tyrannosaur has been uncovered 2016-03-14T04:00:00Z “It is one of the closest cousins of T. rex and tells us that tyrannosaurs evolved sophisticated brains and senses before they became colossal apex predators,” Dr. Brusatte said. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z Yet its large brain and advanced ears—their outlines preserved in a skull fragment—mirror those of later tyrannosaurs like T. rex. ‘Missing Link’ in Tyrannosaur Family Tree Discovered One of the injured Edmontosaurus even had the tip of a tyrannosaur tooth embedded inside. What Was on the T. Rex Menu? Sometimes Each Other 2015-10-31T04:00:00Z The fossil—a tyrannosaur leg bone fragment the size of a human forearm—is scarred with deep grooves left by a large meat-eater as it tore flesh from the ancient carcass. Tyrannosaurs were probably cannibals 2015-10-29T04:00:00Z "We're working on CT scans of another tyrannosaur in my lab right now," he says. A small, but surprisingly smart tyrannosaur has been uncovered 2016-03-14T04:00:00Z When the first tyrannosaurs evolved, about 170 million years ago, they lived in the shadows of larger meat-eaters like Allosaurus. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z “When I looked at it, it struck me really quickly that this looked like a tyrannosaur braincase,” says Brusatte, of the University of Edinburgh. ‘Missing Link’ in Tyrannosaur Family Tree Discovered Rather than being diagnostic of a separate species, Carr concluded, such features actually characterize juvenile tyrannosaurs. Top predator wannabe is just another T. rex 2015-10-16T04:00:00Z From their terrifying seven-inch teeth to their comically disproportionate arms, tyrannosaurs loom large in the public imagination. Utah’s ‘Grand Staircase’ Leads Back in Time to Dinosaur Shangri-La 2015-07-20T04:00:00Z I’ve dug up T.rex fossils in the western United States, travelled the world studying tyrannosaur bones in museums, and described some of T.rex’s closest cousins. How I Dissected a T. Rex [Video] 2015-06-08T04:00:00Z Based on a few scattered bones, the scientists estimated that Timurlengia was about the size of a horse, like earlier tyrannosaurs, weighing about 600 pounds, with long legs and blade-like teeth. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z A new species of tyrannosaur adds to the fearsome group of dinosaurs to which Tyrannosaurus rex belonged. ‘Missing Link’ in Tyrannosaur Family Tree Discovered The presence of feathers in tyrannosaurs and many other kinds of dinosaurs makes it very likely that the great T. rex was feathered, too. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z By December, the bones of the excavated tyrannosaur lay encased in plaster in a lab here, awaiting closer analysis. Utah’s ‘Grand Staircase’ Leads Back in Time to Dinosaur Shangri-La 2015-07-20T04:00:00Z This isn’t total speculation either: there is one spectacularly preserved tyrannosaur fossil with stomach contents that helped us in our design. How I Dissected a T. Rex [Video] 2015-06-08T04:00:00Z A tyrannosaur from China named Xiongguanlong, imprecisely dated to 100 million to 120 million years ago, is another important clue. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z However, the braincase was short—more in keeping with Xiongguanlong, an early tyrannosaur—and lacked some of the deep recesses and knobs in later tyrannosaurs like T. rex. ‘Missing Link’ in Tyrannosaur Family Tree Discovered Rise of the kings The new discoveries from Russia, China and elsewhere show that tyrannosaurs were doing quite well from the Middle Jurassic into the Early Cretaceous. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Nearby, Dr. Titus spotted something else: a tyrannosaur toe bone. Utah’s ‘Grand Staircase’ Leads Back in Time to Dinosaur Shangri-La 2015-07-20T04:00:00Z The skull of an adolescent tyrannosaur shows signs of vicious combat and of being eaten by other big dinosaurs, possibly of the same species. T. rex cousin has battle scars and signs of cannibalism 2015-04-09T04:00:00Z The finding, he said, is a new indication that tyrannosaurs got smart before they got big. Tyrannosaur Fossil Indicates Dinosaur Got Smart First, Then Grew Big 2016-03-14T04:00:00Z The finding suggests that tyrannosaurs first evolved their distinct senses and brain structure, and then grew in size much later. ‘Missing Link’ in Tyrannosaur Family Tree Discovered Here was a tyrannosaur from the latest part of the Cretaceous that was strikingly different from the tyrant lizard king. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Those wounds healed, but tooth marks on its jaw suggest that the meat eater was chomped on by yet another tyrannosaur after it died. T. Rex cousin was a cannibal 2015-04-09T04:00:00Z Not only did the tyrannosaurs disappear, so did many species in the seas, including most of the species of tiny marine organisms called foraminifera. Did a massive volcanic eruption in India kill off the dinosaurs? 2014-12-11T05:00:00Z Instead, the long-snouted tyrannosaurs would “probably cut up their prey with their smaller, more numerous, and more blade-like teeth”, says Williamson. Long-snouted tyrannosaur unearthed 2014-05-06T04:00:00Z Researchers now think several different tyrannosaurs lived and hunted alongside each other in Asia during the late Cretaceous Period, the last days of the dinosaurs. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z Lü invited me to help him describe the new Chinese fossil because I had studied two other peculiar long-snouted tyrannosaurs, discovered decades earlier, that had long confused scientists. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z A distinctive pattern of tooth marks on the skull and jaw of a tyrannosaur discovered at Dinosaur Provincial Park in Alberta, Canada, offers the best evidence of that yet, scientists say. T. Rex cousin was a cannibal 2015-04-09T04:00:00Z Several strange fossils were found, but scientists were unsure if they were an entirely new branch of the tyrannosaurs family. Dinosaur discovery: “Pinocchio Rex,” the weird cousin of the T-Rex 2014-05-07T22:20:00Z Pinocchio rex “tells us pretty unequivocally that these long-snouted tyrannosaurs were a real thing”, says Stephen Brusatte, a palaeontologist at the University of Edinburgh, UK. Long-snouted tyrannosaur unearthed 2014-05-06T04:00:00Z In recent years, two tyrannosaurs with unusually prominent proboscises were , and named Alioramus. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z Beyond their control These latest additions to the tyrannosaur family tree have illuminated the evolutionary history of this charismatic group, but key questions remain. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Researchers think 66 million years ago, lots of different types of tyrannosaur lived in Asia, hunting different prey. New long-nosed dinosaur Pinocchio rex 2014-05-07T11:59:47Z “Researchers now think several different tyrannosaurs lived and hunted alongside each other in Asia during the late Cretaceous Period, the last days of the dinosaurs.” Dinosaur discovery: “Pinocchio Rex,” the weird cousin of the T-Rex 2014-05-07T22:20:00Z “Almost the entire anatomy is there, which is really rare for a new tyrannosaur,” says Brusatte. Long-snouted tyrannosaur unearthed 2014-05-06T04:00:00Z "This is the slam dunk we needed: the long-snouted tyrannosaurs were real." New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z What kind of feathers did the largest tyrannosaurs like T. rex have, and what purposes did they serve? Rise of the Tyrannosaurs 2015-04-14T04:00:00Z "It's the slam dunk we needed, that the long-snouted tyrannosaurs were real." New long-nosed dinosaur Pinocchio rex 2014-05-07T11:59:47Z The skeleton of a new type of tyrannosaur was discovered in a Chinese construction site, near Ganzhou in south. Dinosaur discovery: “Pinocchio Rex,” the weird cousin of the T-Rex 2014-05-07T22:20:00Z "The iconic picture of a tyrannosaur is T. Rex, the biggest, baddest dinosaur of all. "But this new dinosaur had a lighter skeleton. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z There’s a specialised scavenging tyrannosaur – the Gourmand – for example. Speculative Zoologists Imagine Beasts of the Future 2014-04-04T11:06:16Z And then one day, when the tyrannosaurs were at the peak of their game, an asteroid fell from the sky and they disappeared. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Then, they traveled to locations where other bones from the tyrannosaur group were being studied, including China; Birmingham, Alabama; Washington, D.C.; and New York. Scientists say new dinosaur found in Utah is relative of T. rex 2013-11-07T03:05:31Z Despite being much smaller than other tyrannosaurs, it was still a fearsome carnivore. Dinosaur discovery: “Pinocchio Rex,” the weird cousin of the T-Rex 2014-05-07T22:20:00Z The discovery of "Pinocchio" settles an argument over a series of strange new tyrannosaur fossils. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z He hopes that further fossil discoveries will help to flesh out how and when tyrannosaurs took over as the top predator in their ecosystems. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z But they struggled to understand when the tyrannosaurs originated, what they evolved from, and how they were able to grow so large and reach the top of the food chain. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z A 70-million-year-old tyrannosaur skeleton found in Asia is heading home this week. Mongolian dinosaur skeleton goes home 2013-05-08T21:38:44Z Other examples come from the plates and spines of contemporaneous stegosaurs, the cranial crests of oviraptorosaurs, and the cranial bosses and hornlets of tyrannosaurs. Dinosaurs and their exaggerated structures : species recognition aids, or sexual display devices? 2013-04-22T01:15:00.783Z Researchers now believe several different tyrannosaur types lived alongside each other in Asia during the Cretaceous period - hunting different prey. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z Shifts in sea level or climate could have triggered events that led to tyrannosaur dominance, Brusatte says, but he admits that such a connection is speculative. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z A star is born The tale of how the tyrannosaur family history was uncovered begins with the discovery of T. rex, enabled by a man named Henry Fairfield Osborn. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z They didn’t have a 65 million year old phonograph to go by, so they created the tyrannosaurs screech by combining the yelps and yells of other living animals. The Animals Hiding in a T. Rex s Roar 2013-04-10T18:15:02.870Z “I really wonder what the smaller tyrannosaurs that lived millions of years before T. rex were doing.” How to Eat Triceratops 2012-10-28T20:17:53.423Z They appeared to come from an entirely new branch of the tyrannosaur family. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z That animal reached about four metres long, a step up in size from the Jurassic tyrannosaurs. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z Modest beginnings A number of the recent discoveries that are helping to fill the considerable gaps in our knowledge of tyrannosaurs have come from unexpected locales. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Amphibians, reptiles, birds and mammals - living and extinct Tetrapod Zoology Home There are giant feathered tyrannosaurs now… right? There are giant feathered tyrannosaurs now... right? 2012-04-05T11:45:00.167Z Yutyrannus huali lived in northeastern China 125 million years ago, according to a group of scientists in China, where three specimens of the bipedal tyrannosaur were found. Gigantic Feathered Dinosaur Fossils Found in China 2012-04-04T20:45:00.217Z "It's the slam dunk we needed: the long-snouted tyrannosaurs were real." New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z Other researchers also favour the idea of feathered tyrannosaurs. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z But dinosaurs, including tyrannosaurs, are turning up across the world now, even in the far northern reaches of Russia, where paleontologists instead need to cope with bone-chilling cold in winter and humid, mosquito-infested summers. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Substantially simplified phylogeny of tyrannosaurs, in this case from Benson et al. There are giant feathered tyrannosaurs now... right? 2012-04-05T11:45:00.167Z Photo by Cheryl Hebert Daniel Loxton’s new book Ankylosaur Attack brings children into the world of a young ankylosaur, where they encounter towering vegetation, passing pterosaurs and scary tyrannosaurs looking for a meal. Creating Ankylosaur Attack: An interview with author Daniel Loxton 2011-10-12T14:45:06.247Z Their discovery from Mongolia to southern China suggests the long-snouted tyrannosaurs were widely distributed in Asia, according to Prof Junchang Lu of the Chinese Academy of Geological Sciences, a co-author on the paper. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z In this case, the big debate centres on an creature called Nanotyrannus lancensis, a tyrannosaur found in the same North American deposits as that may have reached more than 6 metres in length. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z However they got there, tyrannosaurs flourished once they reached the top of the food chain. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z These were big, shaggy tyrannosaurs in feathery coats – exactly the sort of thing that artists have been drawing and painting for years now. There are giant feathered tyrannosaurs now... right? 2012-04-05T11:45:00.167Z The dinosaur relatives were far less imposing than tyrannosaurs, triceratops and sauropods. Footprint Fossils Offer Earliest Evidence of Dinosaurs? Ancestors 2010-10-06T19:44:00Z "Although we are only starting to learn about them, the long-snouted tyrannosaurs were apparently one of the main groups of predatory dinosaurs in Asia," he said. New Tyrannosaur named 'Pinocchio' 2014-05-07T09:02:26Z The feathers on these tyrannosaurs were not like those of living birds, but simplified precursors. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z Over the past 15 years researchers have recovered nearly 20 new tyrannosaur species at locations the world over, including the deserts of Mongolia and the frigid wastelands of the Arctic Circle. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z The imprint is well defined and deeply embedded in the sandstone riverbed, as if the tyrannosaur had walked there only last week. Baan Na Kum Journal: Old Bones Yield a New Age of Dinosaurs 2010-07-13T01:02:00Z University of Maryland tyrannosaur expert Thomas R. Holtz Jr. said the more-primitive species focused on small- to mid-sized prey, calling them "the jackals of the early part of the age of dinosaurs." Bone discovery is first to place ancestors of T. rex in Southern Hemisphere 2010-03-30T04:00:00Z Kirk grimaced and DeVore saw a faint image of a tyrannosaur, which reared up, jaws agape. Final Weapon Because of the close evolutionary link between tyrannosaurs, he suggests that “T. rex might have had some kind of protofeathers”. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z The world at that time was very different from the setting in which smaller tyrannosaurs first evolved. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z And I thought, Cry Iced!—that's sure going to be one tyrannosaur of a prologue. No Great Magic Once larger predators died off in the Northern Hemisphere, the tyrannosaur lineage was free to evolve into larger predators, Holtz said. Bone discovery is first to place ancestors of T. rex in Southern Hemisphere 2010-03-30T04:00:00Z Amazing new finds have revealed an unappreciated diversity of tyrannosaurs up and down the food chain, even during those last few million years of the Cretaceous, when T. rex and kin ruled unchallenged. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z And because many tyrannosaurs have arms with healed fractures, he says, “their life habits could not require constant use of these arms”. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z It turned out to be a vital clue to the rise of tyrannosaurs. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z The obvious explanation is that the bones belong to a baby tyrannosaur, but shockingly they have thickened sutures—the “seams” between adjacent bones that are only seen in adults. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z But we know that many dinosaur groups were globally widespread during the Middle Jurassic/Middle Cretaceous, so maybe tyrannosaurs were, too. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Incomplete as the tyrannosaur story is, it still reveals a deeper truth about evolution—namely that is not predictable. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z This may be the crucial transition during which tyrannosaurs overlapped with allosaurs, before the latter faded out in the same habitats. Palaeontology: The truth about T. rex 2013-10-23T17:20:31Z And Guanlong, which is known from much more complete specimens than Kileskus, possesses features that are seen only in tyrannosaurs, such as fused nasal bones in the snout. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z A few years later my Chinese colleagues invited me to help study the specimen, and in May 2014 we unveiled it as the latest addition to the tyrannosaur family tree: Qianzhousaurus sinensis. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Qianzhousaurus is part of a surge of new tyrannosaur discoveries over the past decade that is transforming understanding of this group. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z These two finds painted a startling picture of the dawning of tyrannosaurs. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z This geography explains why early tyrannosaurs have since turned up in Russia and China, and slightly later species have emerged from the U.S., Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Among the many beasts found in this Cretaceous Pompeii are two intriguing species of tyrannosaurs. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Warm and fuzzy Although the tyrannosaurs were slow to reach truly gigantic proportions, that delay does not mean their evolution stagnated in the interim. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z It was the clincher: long-snouted tyrannosaurs were distinct species that lived across Asia during the very end of the Cretaceous, probably filling a second-tier predator role on the food chain below Tarbosaurus. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Qianzhousaurus was not the only petite tyrannosaur to share the planet with the heavyweights. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Fiorillo and Tykoski came up with an idea that may sound farfetched but one I think is very plausible: Arctic tyrannosaurs evolved small bodies because their resource-poor habitat could not support larger species. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Persistent variety In the regions where mega tyrannosaurs such as T. rex did rise to power, one might expect these brawny forms to have edged out other, daintier tyrannosaurs. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Both tyrannosaurs are found in the same rock formation and may have lived side by side approximately 125 million years ago. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z So while T. rex ruled to the south, a Mini Me tyrannosaur patrolled the northern wilderness. Rise of the Tyrannosaurs 2015-04-14T04:00:00Z Where did tyrannosaurs originate, and did they get their start even earlier than the Middle Jurassic, perhaps during the Early Jurassic, a time when we have few fossils from around the world? Rise of the Tyrannosaurs 2015-04-14T04:00:00Z |
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