http://www.sciencedaily.com/news/fossils_ruins/dinosaurs/ All about dinosaurs. Read about dinosaur discoveries including gigantic meat-eating dinosaurs, earliest dinosaurs and more. Dinosaur pictures and articles. en-us Wed, 25 Nov 2009 13:05:01 EST Wed, 25 Nov 2009 13:05:01 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/fossils_ruins/dinosaurs/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2009/11/091111151237.htm A new species of dinosaur from the early Jurassic period, approximately 195 million years old, has been discovered in South Africa. Dubbed Aardonyx ("Earth Claw"), the seven-meter-long vegetarian dinosaur gives paleontologists a glimpse into the evolution of giant sauropods that once roamed the prehistoric world. Thu, 12 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/11/091111151237.htm http://www.sciencedaily.com/releases/2009/11/091110202853.htm Were dinosaurs "warm-blooded" like present-day mammals and birds, or "cold-blooded" like present day lizards? The implications of this simple-sounding question go beyond deciding whether or not you'd snuggle up to a dinosaur on a cold winter's evening. In a new study, researchers have found strong evidence that many dinosaur species were probably warm-blooded. Wed, 11 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091110202853.htm http://www.sciencedaily.com/releases/2009/11/091105102726.htm Spanish researchers have studied the fossil record of hadrosaurs, the so-called "duck-billed" dinosaurs, in the Iberian Peninsula for the purpose of determining that they were the last of their kind to inhabit the European continent before disappearing during the K/T extinction event that occurred 65.5 million years ago. Most notable among these fossils is the discovery of a new hadrosaur, the Arenysaurus ardevoli, found in Huesca, Spain. Fri, 06 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091105102726.htm http://www.sciencedaily.com/releases/2009/11/091104101623.htm Using portable 3-D laser technology, scientists have electronically preserved a rare 110 million-year-old fossilized dinosaur footprint excavated in 1933, and built into the wall of a bandstand at a Texas courthouse. The laser image preserves an original track used to describe a species of dinosaur identified in 1935 as ichnospecies Eubrontes glenrosensis. Thu, 05 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091104101623.htm http://www.sciencedaily.com/releases/2009/11/091104122538.htm A long forgotten fossil skull in the collections of the Natural History Museum in London has now provided crucial clues to the early stages of the lengthy evolutionary history of Tyrannosaurus rex and related large carnivorous dinosaurs. Wed, 04 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091104122538.htm http://www.sciencedaily.com/releases/2009/11/091102121454.htm Teenage tyrannosaurs got into some serious fights with their peers. The evidence can be found on Jane, a prized juvenile Tyrannosaurus rex, discovered in 2001 in Montana. The dinosaur's fossils show that it sustained a serious bite that punctured through the bone of its upper jaw and snout. The researchers determined that another juvenile tyrannosaur was responsible for the injury. Mon, 02 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091102121454.htm http://www.sciencedaily.com/releases/2009/10/091030125046.htm Paleontologists have discovered a new species of dinosaur that lived 112 million years ago during the early Cretaceous of central Montana. The new dinosaur, a species of ankylosaur is the biological version of an army tank. It is protected by a plate-like armor with two sets of sharp spikes on each side of the head, and a skull so thick that even 'raptors' could leave barely more than a scratch. Sun, 01 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/10/091030125046.htm http://www.sciencedaily.com/releases/2009/10/091031002314.htm Paleontologists Mark Goodwin and Jack Horner have dug for 11 years in Montana's Hell Creek Formation in search of every dinosaur fossil they can find, accumulating specimens of all stages of development. Their new report on the growth stages of dome-headed dinosaurs shows that two named species are really just young pachycephalosaurs. They say that perhaps one-third of all named dinosaurs may not be separate species, but juvenile or subadult stages of other known dinosaurs. Sat, 31 Oct 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091031002314.htm http://www.sciencedaily.com/releases/2009/10/091014102028.htm A rich dinosaur quarry near Moab, Utah, has one little problem: nearly all the bones are broken. Researchers pieced together what happened and concluded in a new study that the heap of carcasses was trampled while still fresh by big, thirsty sauropods. Wed, 14 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091014102028.htm http://www.sciencedaily.com/releases/2009/10/091009090436.htm The raptor-like Archaeopteryx has long been viewed as the archetypal first bird, but new research reveals that it was actually a lot less "bird-like" than scientists had believed. Fri, 09 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091009090436.htm http://www.sciencedaily.com/releases/2009/10/091006135109.htm A new investigation of a fossilized tracksite in southern Africa shows how early dinosaurs made on-the-fly adjustments to their movements to cope with slippery and sloping terrain. Differences in how early dinosaurs made these adjustments provide insight into the later evolution of the group. Thu, 08 Oct 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091006135109.htm http://www.sciencedaily.com/releases/2009/10/091006155909.htm A Canadian researcher has found 70 million year old evidence of dinosaur cannibalism. The jawbone of what appears to be a Gorgosaurus was found in 1996 in southern Alberta. A technician at the Royal Tyrell Museum in Alberta found something unusual embedded in the jaw. It was the tip of a tooth from another meat-eating dinosaur. Wed, 07 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091006155909.htm http://www.sciencedaily.com/releases/2009/10/091005124831.htm Just a few weeks after tiny, early Raptorex kriegsteini was unveiled, a new wrench has been thrown into the family tree of the tyrannosaurs. The new Alioramus altai -- a horned, long-snouted, gracile cousin of Tyrannosaurus rex -- shared the same environment with larger, predatory relatives. Mon, 05 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091005124831.htm http://www.sciencedaily.com/releases/2009/09/090929133117.htm When pondering the demise of a famous dinosaur such as 'Sue,' the mighty Tyrannosaurus rex whose fossilized remains are a star attraction of the Field Museum in Chicago, it is hard to avoid the image of clashing Cretaceous titans engaged in bloody, mortal combat. But a new study provides evidence that Sue, perhaps the most famous dinosaur in the world, was felled in more mundane fashion by a lowly parasite that still afflicts modern birds. Wed, 30 Sep 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090929133117.htm http://www.sciencedaily.com/releases/2009/09/090928205415.htm A fossil of a bird-like dinosaur with four wings has been discovered in northeastern China. The specimen bridges a critical gap in the transition from dinosaurs to birds, and reveals new insights into the origin evolution of feathers. Tue, 29 Sep 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090928205415.htm http://www.sciencedaily.com/releases/2009/09/090917144115.htm When you think of Tyrannosaurus rex, a small set of striking physical traits comes to mind: an oversized skull with powerful jaws, tiny forearms and the muscular hind legs of a runner. But, researchers have just unearthed a much smaller tyrannosauroid in China, no more than three meters long, that displays all the same features -- and it predates the T. rex by tens of millions of years. Thu, 17 Sep 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090917144115.htm http://www.sciencedaily.com/releases/2009/08/090806112357.htm Tyrannosaurus rex and other predatory dinosaurs might not have been fearless hunters after all. Using new fossil evidence, researchers in Germany propose that the large carnivores hunted mainly juvenile dinosaurs instead of giant herbivorous adults. Fri, 07 Aug 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/08/090806112357.htm http://www.sciencedaily.com/releases/2009/07/090729103737.htm A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage. The findings is the latest addition to an ongoing controversy over which biochemical remnants can be detected in the dinosaur. Fri, 31 Jul 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090729103737.htm http://www.sciencedaily.com/releases/2009/07/090715102305.htm Paleontologists have made the most important discovery to date at the Arlington Archosaur Site, a prolific fossil site in Texas. The disassembled skull of a crocodile with two-and-a-half-inch-long teeth that lived nearly 100 million years ago has been unearthed. Thu, 16 Jul 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090715102305.htm http://www.sciencedaily.com/releases/2009/07/090710205357.htm The same paleontologist who made the Montana discovery of the first known dinosaur burrow has now found the trace fossil of a burrow in Australia almost identical to the one he identified in the US. His growing evidence of dinosaur burrows provides clues to climate change and how dinosaurs may have survived extreme environments -- throwing a wrench in some extinction theories. Sat, 11 Jul 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090710205357.htm http://www.sciencedaily.com/releases/2009/07/090707203728.htm Scientists have identified preserved organic molecules in the skin of a dinosaur that died around 66-million years ago. Wed, 08 Jul 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090707203728.htm http://www.sciencedaily.com/releases/2009/06/090622103904.htm Researchers have compared an Allosauroidea tooth found in deposits in Riodeva, Teruel, with other similar samples. The palaeontologists have concluded that this is the largest tooth of a carnivorous dinosaur to have been found to date in Spain. Tue, 07 Jul 2009 05:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090622103904.htm http://www.sciencedaily.com/releases/2009/07/090703070846.htm Scientists have discovered three new species of Australian dinosaur discovered in a prehistoric billabong in Western Queensland: two giant, herbivorous sauropods and one carnivorous theropod. Fri, 03 Jul 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/07/090703070846.htm http://www.sciencedaily.com/releases/2009/06/090629200632.htm Microscopic analysis of scratches on dinosaur teeth has helped scientists unravel an ancient riddle of what a major group of dinosaurs ate -- and exactly how they did it! Now for the first time, a study led by the University of Leicester, has found evidence that the duck-billed dinosaurs -- the Hadrosaurs -- in fact had a unique way of eating, unlike any living creature today. Tue, 30 Jun 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090629200632.htm http://www.sciencedaily.com/releases/2009/06/090612202952.htm Many of us have broken bones in our bodies at one time or another, and when this happens a healing process begins. The same was true of animals in the past, and has been well documented in all groups of dinosaurs. But how can we study and understand the healing process? Thu, 25 Jun 2009 08:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090612202952.htm http://www.sciencedaily.com/releases/2009/06/090621195620.htm The largest animals ever to have walked the face of the earth may not have been as big as previously thought, according to a new article. Mon, 22 Jun 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090621195620.htm http://www.sciencedaily.com/releases/2009/06/090617171816.htm Scientists have discovered a unique beaked, plant-eating dinosaur in China. The finding, they say, demonstrates that theropod, or bird-footed, dinosaurs were more ecologically diverse in the Jurassic period than previously thought, and offers important evidence about how the three-fingered hand of birds evolved from the hand of dinosaurs. Thu, 18 Jun 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090617171816.htm http://www.sciencedaily.com/releases/2009/06/090617104905.htm Plants or meat: that's about all that fossils ever tell paleontologists about a dinosaur's diet. But the skull characteristics of a new species of parrot-beaked dinosaur and its associated gizzard stones indicate that the animal fed on nuts and/or seeds. These characteristics present the first solid evidence of nut-eating in any dinosaur. Wed, 17 Jun 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090617104905.htm http://www.sciencedaily.com/releases/2009/06/090609092055.htm Researchers have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight -- and the finding means it's unlikely that birds descended from any known theropod dinosaurs. Tue, 09 Jun 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/06/090609092055.htm http://www.sciencedaily.com/releases/2009/05/090512134657.htm The discovery of a gruesome feeding frenzy that played out 73 million years ago in Northwestern Alberta may also lead to the discovery of new dinosaur species there. Paleontologists found a nesting site and the remains of baby, plant-eating dinosaurs and the teeth of a predator. Fri, 15 May 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/05/090512134657.htm http://www.sciencedaily.com/releases/2009/04/090430144528.htm Ancient protein dating back 80 million years to the Cretaceous geologic period has been preserved in bone fragments and soft tissues of a hadrosaur, or duck-billed dinosaur. The new findings support earlier results suggesting that collagen protein survived in the bones of a well preserved Tyrannosaurus rex, and offer robust new evidence supporting previous conclusions that birds and dinosaurs are evolutionarily related. Fri, 01 May 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090430144528.htm http://www.sciencedaily.com/releases/2009/04/090429131935.htm What do you do when you have a fossil quarry that has yielded some of the most important and rarest of dinosaur fossils in North America, but the fossil-bearing layer of rock is tilted at 70 degrees and there is so much rock that not even jackhammers can get you to the fossils any longer? Fri, 01 May 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090429131935.htm http://www.sciencedaily.com/releases/2009/04/090428092823.htm The idea of isolated communities of dinosaurs surviving the catastrophic extinction event 65 million years ago has stimulated a great deal of literary and cinematic drama. Today the fiction seems just a little closer to reality. New scientific evidence suggests that dinosaurs may have survived in a remote area of what is now New Mexico and Colorado for up to half a million years. Thu, 30 Apr 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090428092823.htm http://www.sciencedaily.com/releases/2009/04/090422085144.htm A team of researchers from China and the US have excavated a treasure trove of dinosaur skeletons from Early Cretaceous rocks in the southern part of the Gobi Desert. Two of their discoveries represent new species of theropod dinosaurs, including one that represents a 'missing link' in the fossil record of tyrannosaurs. Wed, 22 Apr 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090422085144.htm http://www.sciencedaily.com/releases/2009/04/090415141225.htm Researchers recently took a 75-million-year-old turtle for a CT scan to look for its skull, additional eggs and possible embryos. Thu, 16 Apr 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/04/090415141225.htm http://www.sciencedaily.com/releases/2009/03/090324081431.htm Discovering three juvenile Triceratops deposited together in the badlands of Montana is providing new information about this group of ceratopsid dinosaurs: they may have engaged in social behavior for a portion of their life or under certain circumstances. Tue, 24 Mar 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/03/090324081431.htm http://www.sciencedaily.com/releases/2009/03/090316173218.htm Massive predators like Albertosaurus and Tyrannosaurus Rex may have been at the top of the food chain, but they were not the only meat-eating dinosaurs to roam North America, according to Canadian researchers who have discovered the smallest dinosaur species on the continent to date. Their work is also helping re-draw the picture of North America's ecosystem at the height of the dinosaur age 75 million years ago. Tue, 17 Mar 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/03/090316173218.htm http://www.sciencedaily.com/releases/2009/03/090316075721.htm A herd of young birdlike dinosaurs met their death on the muddy margins of a lake some 90 million years ago, according to a team of Chinese and American paleontologists that excavated the site in the Gobi Desert in western Inner Mongolia. The sudden death of the herd in a mud trap provides a rare snapshot of social behavior. Mon, 16 Mar 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/03/090316075721.htm http://www.sciencedaily.com/releases/2009/02/090215151858.htm Researchers are using powerful X-rays to find elemental traces of dinosaur tissue next to fossilized bones. Sun, 22 Feb 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/02/090215151858.htm http://www.sciencedaily.com/releases/2009/02/090220110912.htm Scientists used laser imaging to investigate how fat -- or fit -- T. rex and his fellow dinosaurs were. Researchers found that a small T. rex could have weighed anywhere between 5.5 and 7 tonnes, while their larger specimen (Stan) might have weighed as much as 8 tonnes. Fri, 20 Feb 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/02/090220110912.htm http://www.sciencedaily.com/releases/2009/02/090209075822.htm In just four years one palaeontologist has discovered 48 new species from the age of the dinosaurs using a systematic search method. The new discoveries, found hidden in mud on the Isle of Wight, are around 130 million years old and shed valuable light on the poorly understood world in which well known dinosaurs roamed. Mon, 09 Feb 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/02/090209075822.htm http://www.sciencedaily.com/releases/2009/02/090204112217.htm The largest snake the world has ever known -- as long as a school bus and as heavy as a small car -- ruled tropical ecosystems only 6 million years after the demise of the fearsome Tyrannosaurus rex, according to a new discovery published in the journal Nature. Wed, 04 Feb 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/02/090204112217.htm http://www.sciencedaily.com/releases/2009/01/090126082351.htm A recent study by researchers in England has found that scientists' knowledge of the evolution of dinosaurs is remarkably complete. Fri, 30 Jan 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/01/090126082351.htm http://www.sciencedaily.com/releases/2009/01/090127202044.htm How did the dinosaur Triceratops use its three horns? The horns and frills of horned dinosaurs were not just for looks. Battle scars on the skulls of Triceratops preserve rare evidence of Cretaceous-era combat. Wed, 28 Jan 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/01/090127202044.htm http://www.sciencedaily.com/releases/2009/01/090113113953.htm A Texas legislator is seeking a name change for the official state dinosaur, after master's level research at Southern Methodist University revealed the titleholder was misidentified. The Texas State Dinosaur, currently identified as Pleurocoelus, is actually Paluxysaurus jonesi - a new genus and species unique to Texas. Wed, 14 Jan 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/01/090113113953.htm http://www.sciencedaily.com/releases/2008/12/081216114750.htm Dinosaur hunters on a month-long expedition to the Sahara desert have returned home in time for Christmas with more than they ever dreamed of finding. Wed, 17 Dec 2008 08:00:00 EST http://www.sciencedaily.com/releases/2008/12/081216114750.htm http://www.sciencedaily.com/releases/2008/12/081208114300.htm Paleontologists have long known that dinosaurs had tiny brains, but they had no idea the beasts were such airheads. Scientists suggest that newly discovered large air spaces helped lighten the load of the head, making it about 18 percent lighter than it would have been without all the air. That savings in weight could have allowed the predators to put on more bone-crushing muscle or even to take larger prey. Tue, 09 Dec 2008 08:00:00 EST http://www.sciencedaily.com/releases/2008/12/081208114300.htm http://www.sciencedaily.com/releases/2008/11/081113181200.htm It has all the hallmarks of a Cretaceous melodrama. A dinosaur sits on her nest of a dozen eggs on a sandy river beach. Water levels rise, and the mother is faced with a dilemma: Stay or abandon her unhatched offspring to the flood and scramble to safety? Fri, 14 Nov 2008 23:00:00 EST http://www.sciencedaily.com/releases/2008/11/081113181200.htm