//www.koonmotors.com/news/fossils_ruins/tyrannosaurus_rex/ 霸王龙。读到骨骼的老了est T Rex ever found, gigantic meat-eating dinosaurs and more. Pictures too. en-us Wed, 06 Sep 2023 14:55:17 EDT Wed, 06 Sep 2023 14:55:17 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/fossils_ruins/tyrannosaurus_rex/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/08/230830131713.htm A new study brings together intriguing details about the little-known Rhabdodontidae dinosaurs of Late Cretaceous Europe. These gregarious herbivores, characterized by robust builds and beaks specialized for tough vegetation, inhabited the European archipelago. Despite being widespread and abundant, they vanished in Western Europe due to environmental changes around 69 million years ago, while surviving longer in Eastern Europe. Their fossil record offers valuable insights into their evolution and lifestyle, although its limited nature still challenges comprehensive understanding. Wed, 30 Aug 2023 13:17:13 EDT //www.koonmotors.com/releases/2023/08/230830131713.htm //www.koonmotors.com/releases/2023/08/230823122557.htm Researchers have discovered the fossils of two new abelisaurs in Morocco, showing the diversity of dinosaurs in this region at the end of the Cretaceous period. Wed, 23 Aug 2023 12:25:57 EDT //www.koonmotors.com/releases/2023/08/230823122557.htm //www.koonmotors.com/releases/2023/08/230814174542.htm Scientists have discovered and documented the largest known single dinosaur track site in Alaska. The site, located in Denali National Park and Preserve, has been dubbed 'The Coliseum' by researchers. Mon, 14 Aug 2023 17:45:42 EDT //www.koonmotors.com/releases/2023/08/230814174542.htm //www.koonmotors.com/releases/2023/07/230718164250.htm Scientists have described an unusual fossil from around 125 million years ago in China that shows a dramatic moment in time when a carnivorous mammal attacked a larger plant-eating dinosaur. The two animals are locked in mortal combat, and it's among the first evidence to show actual predatory behavior by a mammal on a dinosaur. The fossil's presence challenges the view that dinosaurs had few threats from their mammal contemporaries during the Cretaceous, when dinosaurs were the dominant animals. Tue, 18 Jul 2023 16:42:50 EDT //www.koonmotors.com/releases/2023/07/230718164250.htm //www.koonmotors.com/releases/2023/06/230627123015.htm A Cretaceous origin for placental mammals, the group that includes humans, dogs and bats, has been revealed by in-depth analysis of the fossil record, showing they co-existed with dinosaurs for a short time before the dinosaurs went extinct. Tue, 27 Jun 2023 12:30:15 EDT //www.koonmotors.com/releases/2023/06/230627123015.htm //www.koonmotors.com/releases/2023/06/230614220724.htm Digital modelling of legendary fossil's soft tissue suggests Australopithecus afarensis had powerful leg and pelvic muscles suited to tree dwelling, but knee muscles that allowed fully erect walking. Wed, 14 Jun 2023 22:07:24 EDT //www.koonmotors.com/releases/2023/06/230614220724.htm //www.koonmotors.com/releases/2023/05/230510120558.htm There have been heated debates over the size of Jurassic animals. The speculation was set to continue, but now a chance discovery in an Oxfordshire museum has led to palaeontologists publishing a paper on a Jurassic species potentially reaching a whopping 14.4 meters -- twice the size of a killer whale. Wed, 10 May 2023 12:05:58 EDT //www.koonmotors.com/releases/2023/05/230510120558.htm //www.koonmotors.com/releases/2023/03/230330172120.htm A new study suggests that predatory dinosaurs, such as Tyrannosaurus rex, did not have permanently exposed teeth as depicted in films such as Jurassic Park, but instead had scaly, lizard-like lips covering and sealing their mouths. Thu, 30 Mar 2023 17:21:20 EDT //www.koonmotors.com/releases/2023/03/230330172120.htm //www.koonmotors.com/releases/2023/03/230321132523.htm Samples from the asteroid Ryugu collected by the Hayabusa2 mission contain nitrogenous organic compounds, including the nucleobase uracil, which is a part of RNA. Tue, 21 Mar 2023 13:25:23 EDT //www.koonmotors.com/releases/2023/03/230321132523.htm //www.koonmotors.com/releases/2023/02/230223181827.htm 食肉恐龙被称为食肉恐龙roamed the ancient Earth ranged in size from the bus-sized T. rex to the smaller, dog-sized Velociraptor. Scientists puzzling over how such wildly different dinosaur sizes evolved recently found -- to their surprise -- that smaller and larger theropod dinosaurs like these didn't necessarily get that way merely by growing slower or faster. Thu, 23 Feb 2023 18:18:27 EST //www.koonmotors.com/releases/2023/02/230223181827.htm //www.koonmotors.com/releases/2023/02/230213201105.htm Researchers have reconstructed the brains and inner ears of two British spinosaurs, helping uncover how these large predatory dinosaurs interacted with their environment. Mon, 13 Feb 2023 20:11:05 EST //www.koonmotors.com/releases/2023/02/230213201105.htm //www.koonmotors.com/releases/2023/01/230118195852.htm The discovery of more than 250 fossilized eggs reveals intimate details about the lives of titanosaurs in the Indian subcontinent, according to a new study. Wed, 18 Jan 2023 19:58:52 EST //www.koonmotors.com/releases/2023/01/230118195852.htm //www.koonmotors.com/releases/2023/01/230111193434.htm Amino acids make up millions of proteins that drive the chemical gears of life, including essential bodily functions in animals. Because of amino acids' relationship to living things scientists are eager to understand the origins of these molecules. After all, amino acids may have helped spawn life on Earth after being delivered here about 4 billion years ago by pieces of asteroids or comets. Wed, 11 Jan 2023 19:34:34 EST //www.koonmotors.com/releases/2023/01/230111193434.htm //www.koonmotors.com/releases/2023/01/230111104321.htm A new study posits that interstellar cloud conditions may have played a significant role on the presence of key building blocks of life in the solar system. Wed, 11 Jan 2023 10:43:21 EST //www.koonmotors.com/releases/2023/01/230111104321.htm //www.koonmotors.com/releases/2022/12/221221121310.htm Microraptor was an opportunistic predator, feeding on fish, birds, lizards -- and now small mammals. The discovery of a rare fossil reveals the creature was a generalist carnivore in the ancient ecosystem of dinosaurs. Wed, 21 Dec 2022 12:13:10 EST //www.koonmotors.com/releases/2022/12/221221121310.htm //www.koonmotors.com/releases/2022/12/221216142623.htm The earliest dinosaurs included carnivorous, omnivorous and herbivorous species, according to a team of palaeobiologists. Fri, 16 Dec 2022 14:26:23 EST //www.koonmotors.com/releases/2022/12/221216142623.htm //www.koonmotors.com/releases/2022/12/221209094728.htm Scratches on dinosaur teeth could reveal what they really ate. Dental microwear texture analysis (DMTA) has now been used to infer the feeding habits of large theropods, including Allosaurus and T. rex. By taking 3D images of individual teeth and analyzing the pattern of marks scratched into them, researchers could reason which dinosaurs may have frequently crunched on hard bone and which may have regularly eaten softer foods and prey. This technique opens up a new avenue of research for paleontology, helping us to better understand not only dinosaurs themselves but also the environment and communities in which they lived. Fri, 09 Dec 2022 09:47:28 EST //www.koonmotors.com/releases/2022/12/221209094728.htm //www.koonmotors.com/releases/2022/12/221207142210.htm Dinosaurs dominated the world right up until a deadly asteroid hit the earth, leading to their mass extinction, some 66 million years ago, a landmark study reveals. Fresh insights into dinosaurs' ecosystems -- the habitats and food types that supported their lives -- suggests that their environments were robust and thriving, right up until that fateful day, at the end of the Cretaceous period. Wed, 07 Dec 2022 14:22:10 EST //www.koonmotors.com/releases/2022/12/221207142210.htm //www.koonmotors.com/releases/2022/12/221206204908.htm Scientists have found new evidence for how armored dinosaurs used their iconic tail clubs. The exceptional fossil of the ankylosaur Zuul crurivastator has spikes along its flanks that were broken and re-healed while the dinosaur was alive -- injuries that the scientists think were caused from a strike by another Zuul's massive tail club. This suggests ankylosaurs had complex behavior, possibly battling for social and territorial dominance or even engaging in a 'rutting' season for mates. Tue, 06 Dec 2022 20:49:08 EST //www.koonmotors.com/releases/2022/12/221206204908.htm //www.koonmotors.com/releases/2022/11/221128101215.htm Whatcheeria, a six-foot-long salamander-like creature that lived 340 million years ago, was the T. rex of its time: the biggest, baddest predator in its habitat. A new study reveals how they grew to their 'giant' size: instead of growing slow and steady throughout their lives like many modern reptiles and amphibians, they did most of their growing when they were young. Mon, 28 Nov 2022 10:12:15 EST //www.koonmotors.com/releases/2022/11/221128101215.htm //www.koonmotors.com/releases/2022/09/220922103147.htm Researchers have conducted a new analysis of the origins of 'bird-hipped' dinosaurs -- the group which includes iconic species such as Triceratops -- and found that they likely evolved from a group of animals known as silesaurs, which were first identified two decades ago. Thu, 22 Sep 2022 10:31:47 EDT //www.koonmotors.com/releases/2022/09/220922103147.htm //www.koonmotors.com/releases/2022/08/220824152316.htm Fossils of a giant killer mosasaur have been discovered, along with the fossilized remains of its prey. Wed, 24 Aug 2022 15:23:16 EDT //www.koonmotors.com/releases/2022/08/220824152316.htm //www.koonmotors.com/releases/2022/08/220811143042.htm Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown. Thu, 11 Aug 2022 14:30:42 EDT //www.koonmotors.com/releases/2022/08/220811143042.htm //www.koonmotors.com/releases/2022/07/220725124108.htm A new study refutes a provocative claim made earlier this year that fossils classified as the dinosaur Tyrannosaurus rex represent three separate species. The rebuttal finds that the earlier proposal lacks sufficient evidence to split up the iconic species. Mon, 25 Jul 2022 12:41:08 EDT //www.koonmotors.com/releases/2022/07/220725124108.htm //www.koonmotors.com/releases/2022/07/220707141832.htm An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds. Thu, 07 Jul 2022 14:18:32 EDT //www.koonmotors.com/releases/2022/07/220707141832.htm //www.koonmotors.com/releases/2022/05/220525110846.htm Paleontologists have debated whether dinosaurs were warm-blooded, like modern mammals and birds, or cold-blooded, like modern reptiles. In a new paper, scientists are unveiling a new method for studying dinosaurs' metabolic rates, using clues in their bones. Wed, 25 May 2022 11:08:46 EDT //www.koonmotors.com/releases/2022/05/220525110846.htm //www.koonmotors.com/releases/2022/04/220401094852.htm Extinct for 66 million years, T. rex still inspires speculation about its anatomy, behavior and fierce physique. One conundrum: its peculiarly short forelimbs, which have relatively limited mobility. While scientists have suggested explanations, a paleontologist puts the proposals to the test and finds them wanting. He hypothesizes that the arms reduced in size to limit damage, possibly fatal, when a pack of T. rexes descended on a carcass with their bone-crunching teeth. Fri, 01 Apr 2022 09:48:52 EDT //www.koonmotors.com/releases/2022/04/220401094852.htm //www.koonmotors.com/releases/2022/03/220323125107.htm Spinosaurus is the largest predatory dinosaur known -- over two metres longer than the longest Tyrannosaurus rex -- but the way it hunted has been a subject of debate for decades. In a new paper, palaeontologists have taken a different approach to decipher the lifestyle of long-extinct creatures: examining the density of their bones. Wed, 23 Mar 2022 12:51:07 EDT //www.koonmotors.com/releases/2022/03/220323125107.htm //www.koonmotors.com/releases/2022/03/220311095330.htm Scientists describe the find of a new softshell turtle from the end of the Cretaceous Period. Fri, 11 Mar 2022 09:53:30 EST //www.koonmotors.com/releases/2022/03/220311095330.htm //www.koonmotors.com/releases/2022/03/220303141209.htm A physics professor has developed an innovative activity that poses the question: Is Usain Bolt faster than a 900-pound dinosaur? Thu, 03 Mar 2022 14:12:09 EST //www.koonmotors.com/releases/2022/03/220303141209.htm //www.koonmotors.com/releases/2022/02/220228220252.htm A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to be re-categorized into three distinct groups or species, reports a new study. Mon, 28 Feb 2022 22:02:52 EST //www.koonmotors.com/releases/2022/02/220228220252.htm //www.koonmotors.com/releases/2021/12/211221102724.htm A new bird-like dinosaur that used brute strength to overcome its prey has been found by palaeontologists combing through fossils found on the Isle of Wight, on the South Coast of Great Britain. Tue, 21 Dec 2021 10:27:24 EST //www.koonmotors.com/releases/2021/12/211221102724.htm //www.koonmotors.com/releases/2021/12/211217123803.htm 一项研究调查了为什么蜥脚类动物fo的谜ssils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions. Fri, 17 Dec 2021 12:38:03 EST //www.koonmotors.com/releases/2021/12/211217123803.htm //www.koonmotors.com/releases/2021/12/211216145931.htm Theropod dinosaurs evolved more robust jaws through time allowing them to consume tougher food, a new study reveals. Thu, 16 Dec 2021 14:59:31 EST //www.koonmotors.com/releases/2021/12/211216145931.htm //www.koonmotors.com/releases/2021/12/211201085141.htm 研究人员已经确定了fo骨病ssilized jaw of a Tyrannosaurus rex using a CT-based, nondestructive imaging approach. The imaging method could have significant applications in paleontology, researchers said, as an alternative to fossil assessment methods that involve the destruction of samples. Wed, 01 Dec 2021 08:51:41 EST //www.koonmotors.com/releases/2021/12/211201085141.htm //www.koonmotors.com/releases/2021/11/211111080404.htm A new study uncovers a novel approach to a plant-based diet, unique to long-necked dinosaurs. Thu, 11 Nov 2021 08:04:04 EST //www.koonmotors.com/releases/2021/11/211111080404.htm //www.koonmotors.com/releases/2021/09/210921172653.htm A team of paleontologists excavated four dinosaurs in northeastern Montana this summer. The four dinosaur fossils are: the ilium -- or hip bones -- of an ostrich-sized theropod, the group of meat-eating, two-legged dinosaurs that includes Tyrannosaurus rex and raptors; the hips and legs of a duck-billed dinosaur; a pelvis, toe claw and limbs from another theropod that could be a rare ostrich-mimic Anzu, or possibly a new species; and a Triceratops specimen consisting of its skull and other fossilized bones. Tue, 21 Sep 2021 17:26:53 EDT //www.koonmotors.com/releases/2021/09/210921172653.htm //www.koonmotors.com/releases/2021/09/210908180545.htm Where skeletons are rare, isolated teeth can flesh out our understanding of ancient reptile-dominated ecosystems, according to a new study. Wed, 08 Sep 2021 18:05:45 EDT //www.koonmotors.com/releases/2021/09/210908180545.htm //www.koonmotors.com/releases/2021/09/210908180446.htm A new dinosaur from the lower Upper Cretaceous of Uzbekistan, Ulughbegsaurus uzbekistanensis, was described from a single maxilla fossil. The research team estimated that this carcharodontosaurian weighed over 1000 kg and measured 7.5--8.0 meters in length, much larger than previously described predators from the same formation. The fossil's age, location, and co-occurrence with the smaller tyrannosaurid Timurlengia shed light on the transition from carcharodontosaurians to tyrannosaurids occupying the apex predator niche. Wed, 08 Sep 2021 18:04:46 EDT //www.koonmotors.com/releases/2021/09/210908180446.htm //www.koonmotors.com/releases/2021/08/210830100012.htm Researchers have identified a new species of mosasaur -- an 18-foot-long fish-eating monster that lived 80 million years ago. Mon, 30 Aug 2021 10:00:12 EDT //www.koonmotors.com/releases/2021/08/210830100012.htm //www.koonmotors.com/releases/2021/08/210825143032.htm Tyrannosaurus rex, the fearsome predator that once roamed what is now western North America, appears to have had an East Coast cousin. A new study describes two dinosaurs that inhabited Appalachia -- a once isolated land mass that today composes much of the eastern United States -- about 85 million years ago: an herbivorous duck-billed hadrosaur and a carnivorous tyrannosaur. Wed, 25 Aug 2021 14:30:32 EDT //www.koonmotors.com/releases/2021/08/210825143032.htm //www.koonmotors.com/releases/2021/08/210824083443.htm Tyrannosaurus rex was not just a huge beast with a big bite, it had nerve sensors in the very tips of its jaw enabling it to better detect -- and eat -- its prey, a new study finds. Tue, 24 Aug 2021 08:34:43 EDT //www.koonmotors.com/releases/2021/08/210824083443.htm //www.koonmotors.com/releases/2021/08/210819102657.htm Scientists have used CT scans to digitally reconstruct the brain, inner ear, and surrounding bones (known as the braincase) of two well-preserved Daspletosaurus specimens. This massive tyrannosaur lived in the coastal forest of what is now Alberta around 75 million years ago -- preceding the more famous T. rex by about 10 million years. Their results suggest that dinosaur brains, and the bones enclosing and protecting, them vary more than previously thought within species, or among closely related species. Thu, 19 Aug 2021 10:26:57 EDT //www.koonmotors.com/releases/2021/08/210819102657.htm //www.koonmotors.com/releases/2021/07/210730165436.htm Research on a newly discovered bird fossil found that a unique brain shape may be why the ancestors of living birds survived the mass extinction that claimed all other known dinosaurs. Fri, 30 Jul 2021 16:54:36 EDT //www.koonmotors.com/releases/2021/07/210730165436.htm //www.koonmotors.com/releases/2021/06/210618134033.htm Footprints from at least six different species of dinosaur -- thought to be the very last dinosaurs to walk on UK soil 110 million years ago -- have been found in Kent. Fri, 18 Jun 2021 13:40:33 EDT //www.koonmotors.com/releases/2021/06/210618134033.htm //www.koonmotors.com/releases/2021/06/210617101227.htm A new study shows that medium-sized predators all but disappeared late in dinosaur history wherever Tyrannosaurus rex and its close relatives rose to dominance. In those areas -- lands that eventually became central Asia and Western North America -- juvenile tyrannosaurs stepped in to fill the missing ecological niche previously held by other carnivores. Thu, 17 Jun 2021 10:12:27 EDT //www.koonmotors.com/releases/2021/06/210617101227.htm //www.koonmotors.com/releases/2021/06/210602091409.htm Scientists have experimentally measured the bite force of adult T. rexes but not of younger tyrannosaurs. Fossils with juvenile bite marks have now allowed experts to experimentally test how hard juveniles could chomp. Though their bite force is one-sixth that of an adult, it is still stronger than that of living hyenas. The measurement is higher than previous estimates, suggesting a different ecological niche for these youngsters. Wed, 02 Jun 2021 09:14:09 EDT //www.koonmotors.com/releases/2021/06/210602091409.htm //www.koonmotors.com/releases/2021/04/210422102836.htm New research suggests juvenile tyrannosaurs were slenderer and relatively faster for their body size compared to their multi-ton parents. Thu, 22 Apr 2021 10:28:36 EDT //www.koonmotors.com/releases/2021/04/210422102836.htm //www.koonmotors.com/releases/2021/04/210420121419.htm The fearsome tyrannosaur dinosaurs may not have been solitary predators as popularly envisioned, but social carnivores with complex hunting strategies like wolves. Tue, 20 Apr 2021 12:14:19 EDT //www.koonmotors.com/releases/2021/04/210420121419.htm //www.koonmotors.com/releases/2021/04/210415142623.htm With fossils few and far between, paleontologists have shied away from estimating the size of extinct populations. But scientists decided to try, focusing on the North American predator T. rex. Using data from the latest fossil analyses, they concluded that some 20,000 adults likely roamed the continent at any one time, from Mexico to Canada. The species survived for perhaps 2.5 million years, which means that about 2.5 billion lived and died overall. Thu, 15 Apr 2021 14:26:23 EDT //www.koonmotors.com/releases/2021/04/210415142623.htm //www.koonmotors.com/releases/2021/03/210330210956.htm Superbly preserved braincase of this new species is an important find - it suggests there was a greater diversity and abundance of abelisaurids late in dinosaurs' era than previously thought. Tue, 30 Mar 2021 21:09:56 EDT //www.koonmotors.com/releases/2021/03/210330210956.htm //www.koonmotors.com/releases/2021/03/210309114354.htm By closely examining the jaw mechanics of juvenile and adult tyrannosaurids, some of the fiercest dinosaurs to inhabit earth, scientists have uncovered differences in how they bit into their prey. Tue, 09 Mar 2021 11:43:54 EST //www.koonmotors.com/releases/2021/03/210309114354.htm //www.koonmotors.com/releases/2021/03/210303142437.htm 3D imaging of the dinocephalian, Anteosaurus, shows that this massive premammalian reptile that grew to the size of a full-grown hippopotamus, was a highly agile killing machine, and not a slow stodgy scavenger as previously believed. Wed, 03 Mar 2021 14:24:37 EST //www.koonmotors.com/releases/2021/03/210303142437.htm //www.koonmotors.com/releases/2021/02/210225143920.htm Paleo-ecologists have demonstrated that the offspring of enormous carnivorous dinosaurs, such as Tyrannosaurus rex may have fundamentally re-shaped their communities by out-competing smaller rival species. Thu, 25 Feb 2021 14:39:20 EST //www.koonmotors.com/releases/2021/02/210225143920.htm //www.koonmotors.com/releases/2021/02/210208161945.htm How did rocks rust on Earth and turn red? A new study has shed new light on the important phenomenon and will help address questions about the Late Triassic climate more than 200 million years ago, when greenhouse gas levels were high enough to be a model for what our planet may be like in the future. Mon, 08 Feb 2021 16:19:45 EST //www.koonmotors.com/releases/2021/02/210208161945.htm //www.koonmotors.com/releases/2021/01/210127083901.htm New research has reignited the debate around the behavior of the giant dinosaur Spinosaurus. Wed, 27 Jan 2021 08:39:01 EST //www.koonmotors.com/releases/2021/01/210127083901.htm //www.koonmotors.com/releases/2021/01/210125113121.htm They are among the largest predators ever to walk the Earth, but experts have discovered that some baby tyrannosaurs were only the size of a border collie dog when they took their first steps. Mon, 25 Jan 2021 11:31:21 EST //www.koonmotors.com/releases/2021/01/210125113121.htm //www.koonmotors.com/releases/2021/01/210122140630.htm In a new study an international team of researchers examined three-dimensional digital models of the bones, joints, and muscles of the fins and limbs of two extinct early tetrapods and a closely related fossil fish and discover these early tetrapods had a very distinct pattern of muscle leverage that didn't look like a fish fin or modern tetrapod limbs and their limbs were more adapted for propulsion rather than weight bearing. Fri, 22 Jan 2021 14:06:30 EST //www.koonmotors.com/releases/2021/01/210122140630.htm //www.koonmotors.com/releases/2020/11/201124190527.htm 通过削减到g恐龙骨骼化石和分析rowth lines, a team of researchers discovered that T. rex and its closest relatives got big thanks to a huge growth spurt in adolescence, while its more distant cousins kept on growing a little bit every year throughout their lives. Tue, 24 Nov 2020 19:05:27 EST //www.koonmotors.com/releases/2020/11/201124190527.htm //www.koonmotors.com/releases/2020/11/201117192626.htm New research suggests that dinosaurs were not in decline before the asteroid hit. The study contradicts previous theories and concludes that had the impact not occurred dinosaurs might have continued to be the dominant group of land animals. Tue, 17 Nov 2020 19:26:26 EST //www.koonmotors.com/releases/2020/11/201117192626.htm