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Wednesday, March 31, 2010
Velociraptor Dinosaur's cousin discovered
Scientists have found out a new species of Dinosaur that was closely related to the Velociraptor.
The 1.8m-long predator was a dromaeosaurid - a family of theropod dinosaurs from which modern birds come down.
The researchers found out its exquisitely well preserved skeleton in sediments dating from the Upper Cretaceous period in Inner Mongolia.
The Fossilised skeleton was in almost perfect condition - with entire claws and teeth - despite being between 145 and 65 million years old.
Its examination was directed by Xing Xu from the Chinese Academy of Sciences in Beijing.
He and his colleagues described several distinguishing features, particularly of its jaw and feet, that enabled them to recognize it as a dromaeosaurid - a name that means "running lizard".
It had, for example, what the researchers explained as "raptorial claws" on its feet.
The highly evolved predator, which has been named Linheraptor exquisitus, represents an entirely latest genus within that family.
"Linheraptor is alike Velociraptor in many features," wrote the scientists.
They positioned out, however, that it was not Velociraptor's closest relative within the dromaeosaurid family.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family, Fossils
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Thursday, March 25, 2010
Fossil illustrates dinosaur caught in collapsing sand dune
Researchers have found out a nearly complete Dinosaur Fossil which appears to have been caught in a collapsing sand dune.
The Seitaad ruessi fossil, illustrated in the journal PLoS One, is a relative of the long-necked sauropods that were once Earth's biggest animals.
S. ruessi, discovered in what is now Utah, could have walked on all four legs, or risen up to walk on just two.
It is from the Early Jurassic period, between 175 and 200 million years before.
At that time, all of Earth's continents were still joined in the super-continent Pangaea, and sauropodomorphs like S. ruessi have been originate in South America and Africa.
Unlike the sauropods to which they are associated, S. ruessi was relatively small, about a metre tall and 3.5-4m long with its lengthy neck and tail, weighing in at between 70 and 90kg.
Much of the fossil, first found out by a local artist in 2004, was perfectly preserved in sandstone. Still, it is missing its head, neck and tail.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family, Dinosour history
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Wednesday, March 24, 2010
Dinosaur skeleton to auction for $6-8m
A 66 million year-aged collectible will be going under the hammer at the Las Vegas Strip on Saturday.
Auctioneer Bonhams & Butterfields is giving natural history buffs the chance to possess "Samson", a fossilised female Tyrannosaurus Rex.
Samson's 170 bones were found out 17 years before in South Dakota, US, and make-up more than half the skeleton of the 40-feet-long, 7.5 ton Dinosaur.
Bids are hoped to apex $6m when it is sold at the Venetian hotel-casino in Las Vegas, on October 3.
The sale will contain hundreds of Dinosaur bone fragments in plastic bags - these separate bones could be added to Samson if experts are willing to invest the necessary thousands of hours.
The T. Rex is being vend among 41 other lots of museum-ready pieces, including a 28-foot duck-billed Dinosaur skeleton and a Seven-foot Fossil shark.
The collection will be on public preview for two weeks prior to the auction.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family, Dinosour history
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Friday, March 19, 2010
China exposes Thousands of Dinosaur Footprints
More than 3,000 Dinosaur Footprints, all facing the same way, have been found out by researchers after a three-month excavation in the eastern Shandong province of China. Possibly representing a migration or panicked stampede, both the quantity and size of the prints distinguish this wonderful discovery.
Estimated to be more than 100 million years aged and dating back to the mid Cretaceous period, Dinosaur remains have been discovered more than thirty sites in the Zhucheng area. Therefore, the moniker, “dinosaur city.”
The prints range in size from 4 to 32 inches long and are thought to belong to at least six different dinosaur kinds including: Tyrannosaurs, Coelurosaurs and Hadrosaurs.
The area is said to be the world’s major grouping of fossilized dinosaur bones. Since 1964, there have been two major digs in this region and experts consider the large numbers of dinosaurs found could give vital clues about their extinction so many millions of years before.
It is possible that even more Dinosaur footprints may be uncovered as the excavation continues. At this time, plans are being made to set up a Dinosaur Fossil park in the area.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family, Dinosour history
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Monday, March 15, 2010
Famous dinosaur fossil hunters
Movies like Jurassic Park make our fascination with dinosaurs seem risky and exciting. Dinosaur hunting can be both hazardous and exciting, but not in the way that the movies portray.
Dinosaur hunting is intellectually exciting, but things do not normally occur as quickly or as flashily as in the movies. Much of it is more tedious, sweaty job. Long trips to isolated places, shovels and picks. Viewing at pieces of rocks and bones, comparing bits of evidence.
There have been lots of people over the years interested in the past. Some have been interested in the distant past of prehistoric times. Bones have been found out for thousands of years. It was not until the 19th century, though, that some of those bones became known belonging to a different sort of animal. Large. Reptilian. Dinosaur!
The premature study of what became known as dinosaurs began in Europe, with many of the leaders in the field being British.
One of the premature dinosaur hunters was Gideon Mantell (1790-1852), who was a doctor from East Sussex, England. In 1822 he explained a tooth that his wife is said to have found along the road while traveling in West Sussex. The story of Gideon Mantell is accessible on a National Geographic DVD titled The Dinosaur Hunters.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family
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Monday, March 1, 2010
Skulls of new dinosaur species found in Utah
Scientists have made a rare discover: four skulls of a new species of giant plant-eating dinosaur, one of them completely intact.
Skulls of plant-eating Dinosaurs were so light and fragile that they have hardly been preserved to be discovered by paleontologists. Reaction to the discover, made in Dinosaur National Monument in eastern Utah, was "probably not printable in a newspaper," said Dan Chure, a paleontologist with the monument.
Chure said that everyone was actually dumbfounded and can go your complete career without seeing one of these. .To find multiple heads was just phenomenal.
Abydosaurus, which lived about 100 million years before, is a type of sauropod, the largest kind of dinosaur to walk on land. Like its relative Brachiosaurus, the long-necked Abydosaurus had a massive body with 3-trunk legs but a relatively tiny head, about one-two-hundredth the size of its body mass. The smallest sauropods might weigh as little as 10 tons; the largest as much as 50 or 60 tons.
The skulls that were found out were those of juvenile dinosaurs, which were probably about 25 feet long when they died, Chure said.
The dearth of skulls among Dinosaur Fossils has posed a hurdle in discovering about the creatures' biology and evolution, researchers said.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family
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Friday, February 12, 2010
Birds May Have Not Evolved from Dinosaurs
It might have been the other way around
Over the past few years, many scientific studies that refute the widely held idea that birds evolved from Dinosaurs have been published in different respected journals around the globe. Such is the case with a latest paper appearing in the latest issue of Proceedings of the National Academy of Sciences (PNAS), which throws added doubts on the decade-old idea.
What the researchers behind this investigation advise is that ground-dwelling theropod dinosaurs were not the source for the ancestors of modern birds. This work casts latest doubts on the established theory of how flight evolved.
Oregon State University Zoology Professor John Ruben is the author of the new research, which deals primarily with the fossil of a creature known as a microraptor that was exposed back in 2003. While studying a 3D model of the creature, Ruben and his team determined that its flying potential was only limited to gliding on variety of air currents from atop trees, and that the tiny animal was unable to fly on its own.
This paper is consistent with previous ones published in the field over the previous years, and Ruben believes that evolution may have actually derived some dinosaurs from birds, and not the other way around.
“We're ending by breaking out of the conventional wisdom of the last 20 years, which insisted that birds evolved from dinosaurs and that the debate is all over and done with . This issue isn't resolved at all . There are just too many inconsistencies with the thought that birds had dinosaur ancestors, and this newest study adds to that,” the expert says.
According to the theory developed at Oregon, it may be that birds and dinosaurs actually had a common ancestor, very much related to the common link between humans and primates. After the two types of animals split, dinosaurs and birds each developed their separate ways, with the winged creatures eventually giving birth to raptors as we know them today.
Labels: Dinosaur footprint, Dinosour cartoon, Dinosour family, Dinosour history
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Tuesday, February 2, 2010
Fossil find in China boosts dinosaur-bird link
A Dinosaur fossil discovered in northwestern China has gave fresh evidence that although its tribe resembled birds millions of years ago, it must have evolved separately - helping confirm that modern birds are indeed living dinosaurs.
It lived a full 160 million years before in the Jurassic period, long before the feathered Archaeopteryx, the first true flying bird, emerged in the fossil record, scientists said.
The newfound Dinosaur is a member of a group that some scientists had thought evolved into modern-day birds. However, because this fossil is so old, it gives weight to the dominant sight that modern birds, not the newly discovered birdlike creatures in China, were the ones that evolved from dinosaurs.
Like a bird, the dinosaur had 3 toes on each leg, a birdlike keel-shaped chest and a long beak. The ten-foot-long dinosaur, named Haplocheirus sollers or "simple, skillful hand," had short forearms with massive claws.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family
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Monday, February 1, 2010
Dinosaur Skin Color Revealed
Paleontologists Say Early Dinosaurs had Red "Mohawk" with Red and White Striped Tail
As much as paleontologists have sorted out about the Dinosaurs, one of the chief aspects of their appearance-what color they were-has remained mysterious. But in a new Nature study, a team of British and Chinese scientists report that they establish a way to unlock the color patterns of one of the earliest feathery dinosaurs-it had a red mohawk, they say, with a red and white striped tail.
The dino in question is called Sinosauropteryx, which existed about 125 million years ago. Looking at Fossils originate in China, the team led by Mike Benton found what they think are the remains of feathers. And they found a bit inside the feathers that matches modern birds: melanosomes.
These structures offer the melanin pigment in bird feathers (and human hair), and what color they are depends on the shape. “A ginger-haired person would have more spherical melanosomes, and a black-haired or grey-haired person might have more of the sausage-shaped structures,” said Professor Benton.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family
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Wednesday, December 23, 2009
Teeth Suggest Dinosaur Was Venomous
Well-preserved fossils of a feathered dinosaur that exist about 124 million years ago — along with certain aspects of its teeth and skull — imply that the turkey-sized creature was venomous.
Sinornithosaurus was unearthed in China and first described by scientists about 10 years ago, but the telling details of the creature’s cranial anatomy are just now being described, says David Burnham, a paleontologist at the University of Kansas in Lawrence.
The majority of the teeth in each side of the creature’s upper jaw have grooves that run from the base of each tooth to the tip, a characteristic seen in some of today’s venomous reptiles. A huge triangular depression on the creature’s upper jawbone — a feature not previously reported in other dinosaurs or their relatives — probably held venom-producing glands, Burnham and his colleagues report online December 21 in the Proceedings of the National Academy of Sciences. Venom curving from those glands probably pooled in reservoirs at the base of each grooved tooth until the dino bit its prey, Burnham says.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosaur unit, Dinosour cartoon, Dinosour family, Dinosour history
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Friday, December 11, 2009
Dinosaur fossil fills gaps in evolutionary knowledge
Scientists have unearthed the fossilised bones of a meat-eating dinosaur the size of a large dog which they believed could fill in the gaps about the early evolution and global migration of a group of animals that take over the land for 170 million years.
The dinosaur, called Tawa hallae, lived about 230 million years ago and was originate in a quarry in northern New Mexico. It hold anatomical features that link it with other dinosaurs living much further south in what is now South America. Researchers said that Tawa bear the idea that the dinosaur lineage evolved in the southern part of the supercontinent Pangea. Successive waves of migration from that region resulted in a diverse variety of dinosaurs spreading to other parts of the giant continent, which later on split into several separate continents.
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Fossils
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Saturday, October 10, 2009
Dinosaur-killing impact set Earth to broil, not burn
The asteroid impact that ruined the age of dinosaurs 65 million years ago didn't incinerate life on our planet's surface – it presently broiled it, a new study suggests. The work resolves nagging questions about a theory that the affect triggered deadly wildfires around the world, but it also bring up new questions about just what led to the mass extinction at the end of the Cretaceous period.
The impact of a 10-km asteroid is liable for the extinction of the dinosaurs and most other species on the planet. Early computer models demonstrate that more than half of the debris blasted into space by the impact would fall into the atmosphere within eight hours.
The models predicted the rain of shock-heated debris would radiate heat as intensely as an oven set to "broil" (260 °C) for at least 20 minutes, and maybe a couple of hours. Intense heating for that extend would heat wood to its ignition temperature, causing global wildfires.
Yet some species survived, and the global layer of impact debris doesn't contain as much soot as would be expected from burning the world's forests, raising questions about the scope of post-impact wildfires
Labels: Dinosaur footprint, Dinosaur fossils, Dinosour cartoon, Dinosour family
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