Thursday, March 18, 2010
A six-mile-wide asteroid is supposed to have crashed into what is now Mexico's Yucatan Peninsula 65 million years before, triggering a blast that spread death and destruction around the globe.
UAF scientist Michael Whalen is part of a research team that presented a new analysis to support the theory that an asteroid wiped out the Dinosaurs.
Scientists first proposed the asteroid impact theory of dinosaur mass extinction 30 years before. The discovery of a massive crater at Chicxulub [CHICK-shuh-loob], in Mexico's Yucatan Peninsula in 1991, supported that hypothesis.
The Chicxulub crater is more than 120 miles wide - about the distance from Fairbanks to the Arctic Circle - and scientists consider it was created when an asteroid more than six miles wide crashed into Earth 65 million years ago. The cataclysmic impact - a million times more powerful than the biggest nuclear bomb ever tested - triggered massive earthquakes, atmospheric discharge and oceanic upheaval. The ensuing mass Extinction ended both the reign of the dinosaurs and the Cretaceous period, which provide way to the Paleogene period. This theory, having progressively accumulated evidence, was thought to be a near-consensus view.
Some scientists declare that long-term volcanic activity at the Deccan Traps, in what is now India, caused acid rain and global cooling, gradually making life untenable for the dinosaurs and other large animals. They also propose that the Chicxulub impact occurred some 300,000 years before the mass extinctions.
Wednesday, March 17, 2010
Many scientists have long idea that Dinosaurs were brown or gray in color. But scientists examining the remains of a dinosaur say they have discover evidence it had brightl -colored feathers.
American and Chinese researchers rebuilt the feathers of a flightless dinosaur named Anchiornis huxleyi. The small, two-legged creature lived about one hundred-fifty million year before. It would have weighed only about 110 grams.
The researchers utilized an electron microscope and fossilized remains of thirty feathers that once covered the animal. The remains were found out in Liaoning Province in China.
Researchers learned melanosomes in the feathers. These small, color-producing structures created as the dinosaur was developing. The researchers compared the structures to the melanosomes that manage the color of feathers on modern birds. They were then able to recognize the colors of the Dinosaur feathers.
The researchers state that Anchiornis huxleyi appeared to have a dark gray or black body. They found that the pinnacle of the ancient creature was light brown in color. It had bright white wings. Each of the feathers had black on the last part.
Tuesday, March 16, 2010
One of the strangest watches in the world is being presented by Louis Moinet, using real Dinosaur Bones in its mechanics.
Most people anticipate to see dinosaur bones in national museums across the globe, yet one pioneering watch firm is allowing history fans to observe them every time they glance at their wrist.
Louis Moinet has announced its Jurassic Tourbillon, which contains fragments of Dinosaur bones in the dial which are dated at 130 million years old and forms part of a new series of novelty timepieces quite exactly named Time Explorator.
The hand-wound mechanical watch also has an impressive 18 carat white gold case and also comes with a bezel and horns that employ no fewer than 56 Wesselton VVS baguette diamonds.
On top of this, the watch also has three dials, while it uses an anti-reflective sapphire crystal front to ensure that reading it is simple in any situation.
Earlier this week, Happy Hour Watches - a wholly cheaper alternative to the dinosaur watch - revealed that its timepieces let buyers to tell the time and, should they want to, open a bottle of beer at the same time with a fancy clasp.
Tuesday, March 9, 2010
The finding of a dinosaur-like animal that lived 10 million years earlier than the oldest known dinos, has suggested that Dinosaurs and other close relatives such as pterosaurs might have also lived much earlier than previously thought.
Asilisaurus kongwe- The new species - shared many characteristics with dinosaurs, but fell just outside of the Dinosaur Family tree.
Asilisaurus kongwe is part of a sister group to dinosaurs identified as silesaurs.
Research into the new species of dinosaurs was carried out by Sterling Nesbitt, a postdoctoral researcher at The University of Texas at Austin's Jackson School of Geosciences.
Even though the oldest dinosaurs found out so far are only 230 million years old, the presence of their closest relatives 10 million years earlier implies that silesaurs and the dinosaur lineage had already diverged from common ancestors by 240 million years ago.
Silesaurs are considered dino-like because they share many dinosaur characteristics, but yet lack key characteristics all dinosaurs share.
The relationship between silesaurs and dinosaurs is analogous to the very close relationship of humans and chimps.
Silesaurs continued to survive side by side with early dinosaurs throughout much of the Triassic Period (between about 250 and 200 million years ago).
Monday, March 8, 2010
Scientists have discovered a dinosaur-like creature ten million years older than the earliest known Dinosaurs.
Asilisaurus kongwe is a newly discovered herbivore that lived during the middle Triassic period - about 245 million years before.
The scientists say that its age proposes that dinosaurs were also on the Earth earlier than previously thought.
They described their discovering in the journal Nature.
The study was led by Dr Sterling Nesbitt from the University of Texas at Austin in the United States.
He said: "This new evidence implies that (dinosaurs) were really only one of several large and distinct groups of animals that exploded in diversity in the Triassic period, including silesaurs (like this one), pterosaurs, and several groups of crocodilian relatives."
Dr Randall Irmis from the Utah Museum of Natural History in the US was also occupied in the study. He commented that these groups of creatures - the silesaurs - were the "closest relative of the dinosaurs".
Thursday, February 18, 2010
SPOILT for food and with their dinosaur predators recently extinct, few birds put on so much weight they became too fat to fly.
DNA examination of giant birds such as emus and ostriches, led by Australian National University's Matthew Phillips, discloses how birds such as the Australasian emu and cassowary, the now-extinct New Zealand moa, the South American rhea and African ostrich scattered around the globe.
The study proposes that flightless birds known as ratites were not necessarily relics of the super continent Gondwana - which drifted apart 100 million years ago to form continents including Africa, Australia and South America - but were able to fly to new lands.
Dr Phillips, an evolutionary biologist, said molecular dating had proposed that the ancestors of these birds became flightless independently about 65 million years ago, around the similar time Dinosaurs became extinct.
Life without dinosaurs not only eliminated a predator, the birds were left with more vegetation to feed on and could spend more time on the ground foraging without worrying about the need to fly from danger.
Wednesday, January 27, 2010
DANVILLE — Local dentist Dr. John Jack Hankla is delighted as schoolchildren file into the grand hall of the Community Arts Center and marvel at the hefty collection of replica dinosaur skeletons.
I just enjoy seeing the children 'ooh' and aah, Hankla said. When they first come in through the door and they see the splendor of these specimens, and they say Wow! I understand that we have done our job.
That Wow! factor, as Hankla calls it, fueled the curiosity that he and his son, John, shared to obtain the collection over the last 20 years.
The collection which includes a 40-foot Tyrannosaurus rex does not include innovative fossils. Rather, the specimens in the display are cast replicas of the bones. The ground floor has completely assembled skeletons, while an upstairs room has skulls and feet.
The inventive fossils were found in China, Brazil, Germany, North Africa and elsewhere around the world. The skull of a duck-billed dinosaur was found on a site close to Lusk, Wyo., where the Hanklas one time owned the fossil rights for digging specimens.
It was at that site that Jack and John Hankla first got eager about dinosaurs when John was about 8 years old. Hundreds of duck-billed dinosaurs had drowned there in a few sort of water hazard.
They were all washed into one smooth lagoon, Jack Hankla said. The carnivores then came and feasted on all these carcasses, and it was nicknamed the T. rex Café, because we discover all these broken teeth of carnivores like T. rex and raptors and lesser dromeosaurs, where they had been there munching.
Friday, January 22, 2010
Dinosaur Footprints shaped 165 million years ago on an ancient shoreline in north Oxfordshire are to be given special protection by the Government’s conservation experts, Natural England.
The fossilized tracks of dinosaurs together with the Brachiosaurus, a vegetarian, and the carnivorous Tyrannosaurus are in a working quarry at Ardley, near Bicester, close to the M40. It is to be designated a Site of Special Scientific Interest — the first to be sheltered for its geological features alone.
The Fossils originate in the rocks include a variety of sea urchins, clams, molluscs, lamp shells, snails, horseshoe worms, corals and very rare ammonites and nautiloids.
“Geological sites of this quality and significance are few and far between and we are delighted to give this important window on our past the protection that it so clearly deserves.” said Helen Phillips, the chief executive of Natural Englan.
The site is to be protected from exposure to the elements and damage from erosion. Experts will work with the site owners to ensure that the track ways are preserved to permit scientific study.
Monday, January 18, 2010
There have been millions of dinosaur sightings worldwide in the past 2 1/2 years, and this weekend they’ll be seen wandering through the Mississippi Coast Coliseum in Biloxi.
“Walking With Dinosaurs — The Arena Spectacular” will take viewers back in time. Life-size dinosaurs that breathe ,blink and roar as they fight for dominance will interrelate with each other and the two paleontologists who serve as guides through the 200 million-year History of Dinosaurs on Earth.
Six shows are programmed Friday through Sunday and resident director Lynda Lavin said the educational story line, the stirring music recorded by the Australian Symphony and the sheer Size of the Dinosaurs offer an unforgettable experience for all ages.
“From 3 to 93, we enclose something for you,” she said.
Parents should know if their young children would be scare of the dark arena, the lights and the noises made by the dinosaurs, and prepare accordingly.
“The dinosaurs,do get very close to the audience,” Lavin said.
Lavin describes the 15 huge dinosaurs as life-size puppets that are part Animatronics, part mechanical and completely realistic in their appearance and the way their heads and tails move.
They have to be, she said, because kids might be familiar with their dinosaurs.
“Walking With Dinosaurs” is based on a BBC television series and brings to modern times the dreadful Tyrannosaurus rex, a baby T. rex and the more calm omnivores.
Friday, January 15, 2010
Combining colourful panels with real and cast Dinosaur teeth ,bones and footprints, this touring exhibition from the geology buffs at National Museum Wales plans to prove the surprisingly close link the unassuming garden bird holds with the decidedly more threatening Tyrannosaurus Rex and Velociraptors.
Scientists are usually in agreement that most of the birds we know and love have evolved from feathered dinosaurs, based on evidence initially surmised through the innovation of a single fossil feather in Southern Germany in 1860.
A year after, the near-complete skeleton of the oldest known bird – dating from 150 million years ago – was found with impressions of feathers conserved in fine mud rock.
They may be widely regarded as friends rather than foes, but today’s birds also bear behavioral traits which are uncannily related to their fiercer ancestors.
Parallel track ways have exposed that dinosaurs moved in herds and packs, nested and built their homes in colonies and, according to fossil sites in Montana and Argentina, built nests and laid eggs.
The meeker breed, though, eventually enjoyed the last laugh. When dinosaurs suddenly became Extinct at the end of the Cretaceous Period 65 million years before, the birds survived.
Wednesday, November 18, 2009
Rocky Mountain museum is creating its own Jurassic adventure bone by bone
The mammoth brachiosaurus … the fierce and deadly tyrannosaurus … the fast and nimble velociraptor.
There are more than 1,000 known types of dinosaurs, with an expected 2,000 more yet to be discovered, according to paleontologists - dinosaur experts. We visit the nation's capital to learn more about the huge creatures that populated the earth millions of years ago.
The U.S. state of Colorado is an ideal target for anyone interested in hunting for dinosaur fossils. Like Wyoming, its neighbor to the north, Colorado has its own facility devoted to restoring dinosaurs to their original form, the Rocky Mountain Dinosaur Resource Center.
"What we are trying to do is to present an incomplete specimen in a absolute way. Because if you just have random bones lying around, it's hard for someone to come in and look at it and recognize what the animal looked like in its entirety. And, by filling in the blanks, they see the real material that [has] been used in the reconstruction, but they also see what the animal looks similar in its entirety." Anthony Maltese, curator of the center said.