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Tag: "dinos" at biology news

Dinosaur DNA? New Patent Covers Degraded DNA recovery

The US Patent Office issued Patent # 6,872,552, "A Method of Reconstituting Nucleic Acid Molecules" today to Burt D. Ensley, Ph.D, Chairman of MatrixDesign, and CEO of DermaPlus, Inc. The patent covers methods for recovering and reconstituting genes from "degraded" DNA samples, and could allow scientists to reassemble everything from prehistoric, extinct animals to unsolved crime scenes. . "This...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

The fossilized skeleton of a small crocodile relative excavated last year at Petrified Forest National Park in Arizona throws a wrench into theories of how and where the dinosaurs arose more than 210 million years ago at the end of the Triassic Period. .. . The fact that this presumed dinosaur, Revueltosaur...

Study: Predatory dinosaurs had bird-like pulmonary system

What could the fierce dinosaur T. rex and a modern songbird such as the sparrow possibly have in common? Their pulmonary systems may have been more similar than scientists previously thought, according to new research from Ohio University and Harvard University. . Though some scientists have proposed that predatory dinosaurs had lungs similar to crocodiles and other reptiles, a new study publishe...

Skull study sheds light on dinosaur diversity

With their long necks and tails, sauropod dinosaurs---famous as the Sinclair gasoline logo and Fred Flintstone's gravel pit tractor---are easy to recognize, in part because they all seem to look alike. . The largest animals known to have walked the earth, sauropods were common in North America during the middle of the dinosaur era but were thought to have been pushed to extinction by more specia...

Wright bros. upstaged! Dinos invented biplanes

The evolution of airplanes from the Wright Brothers' first biplanes to monoplanes was an inadvertent replay of the much earlier evolution of dinosaur flight, say two dino flight experts. . According to paleontologist Sankar Chatterjee and retired aeronautical engineer R.J. Templin, a small early Chinese dinosaur called Microraptor gui used a two-level, biplane wing configuration to fly from tree...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

.. . But videos taken from a submersible research vessel at a depth of 430 meters (1410 feet) near Grand Bahama Island reveal that some sea lilies ca...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

Relative of Velociraptor rewrites evolutionary charts .. The recent discovery of a 90-million-year-old dinosaur in Patagonia demonstrates that dromaeosaurs, a group of carnivorous theropods that includes Velociraptor and is closely related to birds, originated much earlier than previously thought. Rather than originating during the Cretaceous, dromaeosaurs can now be traced back to the Jurassic,...

Did feathered dinosaurs exist?

New evidence raises questions about current theoryBiologists examining evidence for the claim that birds evolved from dinosaurs have reached some surprising new conclusions. However, they caution that "the problem of avian origins is far from being resolved." Their analysis is published online October 10, 2005 in the Journal of Morphology, published by John Wiley & Sons, Inc. and available vi...

Fossil find: 'Godzilla' crocodile had head of a dinosaur, fins like a fish

.. . .. Unlike the crocodiles we know today, Dakosaurus andiniensis lived enti...

Next good dinosaur news likely to come from small packages

Dinosaurs seem bigger than life ?big bones, big mysteries. So it's a delicious irony that the next big answers about dinosaurs may come from small ?very small ?remains. . .. Ostrom joins six other scientists engaged in various versions of CSI: Jurassic Park. The symposium, "New Approaches to Paleontologica...

The world's deepest dinosaur finding - 2256 metres below the seabed

While most nations excavate their skeletons using a toothbrush, the Norwegians found one using a drill. The somewhat rough uncovering of Norway's first dinosaur happened in the North Sea, at an entire 2256 metres below the seabed. It had been there for nearly 200 million years, ever since the time the North Sea wasn't a sea at all, but an enormous alluvial plane. . It is merely a coincidence that...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

Florida State University paleobiologist Gregory M. Erickson sliced up some ancient dinosaur bones uncovered in China to help an international team of scientists identify a new genus and species. Despite striking skeletal differences and only subtle similarities, the FSU researcher determined that the two remarkably intact specimens were cousins of North America's hulking Tyrannosaurus rex. . Make...

Insect predation sheds light on food web recovery after the dinosaur extinction

The recovery of biodiversity after the end-Cretaceous mass extinction was much more chaotic than previously thought, according to paleontologists. New fossil evidence shows that at certain times and places, plant and insect diversity were severely out of balance, not linked as they are today. The extinction took place 65.5 million years ago. Labeled the K-T extinction, it marks the beginning of t...

Large dinosaurs were extremely hot in their day, UF study finds

If you think dinosaurs are hot today, just think back to about 110 million years ago when they really ran hot and heavy. . .. .. In fact, the size of the largest dinosaurs may ulti...

Trotting with emus to walk with dinosaurs

One way to make sense of 165-million-year-old dino tracks may be to hang out with emus, say paleontologists studying thousands of dinosaur footprints at the Red Gulch Dinosaur Tracksite in northern Wyoming. Because they are about the same size, walk on two legs and have similar feet, emus turn out to be the best modern version of the enigmatic reptiles that once trotted along a long-lost coastlin...

Far more than a meteor killed dinos

There's growing evidence that the dinosaurs and most their contemporaries were not wiped out by the famed Chicxulub meteor impact, according to a paleontologist who says multiple meteor impacts, massive volcanism in India, and climate changes culminated in the end of the Cretaceous Period. . The Chicxulub impact may, in fact, have been the lesser and earlier of a series of meteors and volcanic e...

Dinosaurs -- stones did not help with digestion

The giant dinosaurs had a problem. Many of them had narrow, pointed teeth, which were more suited to tearing off plants rather than chewing them. But how did they then grind their food? Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. But this assumption does not seem to be co...

Good times ahead for dinosaur hunters, according to U of Penn scientist's dinosaur census

The golden age of dinosaur discovery is yet upon us, according to Peter Dodson at the University of Pennsylvania. In a forthcoming issue of the Proceedings of the National Academy of Sciences, Dodson revises his groundbreaking 1990 census on the diversity of discoverable dinosaurs upward by 50%, offering a brighter outlook about the number of dinosaurs waiting to be found. His findings also add...

Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers

A new, complete 'tree of life' tracing the history of all 4,500 mammals on Earth shows that they did not diversify as a result of the death of the dinosaurs, says new research published in Nature today. . .. The multinational research team has been working for over...

Old dinosaur research leads to new honor

A lifelong obsession with fossils led to Natural Sciences and Engineering Research Council grantee Robert Reisz discovering the oldest known dinosaur embryos and the oldest known reptile that stands on two legs. . .. "I am humbled that they chose me, and I think it was because my research has had an impa...

Despite their heft, many dinosaurs had surprisingly tiny genomes

They might be giants, but many dinosaurs apparently had genomes no larger than that of a modern hummingbird. . .. .. "We see distinct differen...

Dinosaur hearing, listening to muscle noise, quieter cubicles

How did the hearing of dinosaurs compare to that of present-day animal species" What are some ways to improve acoustical conditions in office cubicles" How can sound waves diagnose and monitor muscle activity" . .. .....

Diminishing dinosaur steps saved by laser and laptop

The Fumanya site, in the Bergueda region of central Catalonia, is so delicate that experts cannot get physically close enough to the tracks to examine them. . .. .. .. Using a high-...

How to look at dinosaur tracks

A new study appearing in the May issue of The Journal of Geology provides fascinating insight into the factors geologists must account for when examining dinosaur tracks. The authors studied a range of larger tracks from the family of dinosaurs that includes the T. Rex and the tridactyl, and provide a guide for interpreting the effects of many different types of erosion on these invaluable impres...

Definitive evidence found of a swimming dinosaur

. A team led by Rubén Ezquerra, Fundación Patrimonio Paleontológico de La Rioja, La Rioja, Spain, discovered the prints in an area long known for its abundance of terrestrial dinosaur trackways dating from the early Cretaceous 125 million years ago. The tea...
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