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Geography helps solve dinosaur evolution puzzle

The number of dinosaur species in the Americas increased following tectonic activity that led to the creation of a mountain range, a study has suggested.
Fifteen million years before the mass extinction that wiped out the giant reptiles, the number of species increased in what is now North America.
Researchers said that the birth of the mountains probably sped up diversification.
The findings have been published in the journal PLoS One.

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Engineering technology reveals eating habits of giant dinosaurs

A team of international researchers, led by the University of Bristol and the Natural History Museum, used CT scans and biomechanical modelling to show that Diplodocus - one of the largest dinosaurs ever discovered - had a skull adapted to strip leaves from tree branches. The research is published today [16 July] in leading international natural sciences journal, Naturwissenschaften.
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 Dinosaur cold-blood theory in doubt

One of the strongest lines of evidence that dinosaurs were cold-blooded, like modern reptiles, has been knocked down.
Prior studies of dinosaur bones uncovered what are known as "lines of arrested growth".
The creatures were presumed to be cold-blooded because modern cold-blooded animals show these same lines.
But scientists reporting in Nature have studied the bones of 41 modern mammal species from around the world, finding every one had these lines as well.

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Dinosaurs lighter than previously thought

Scientists have developed a new technique to accurately measure the weight and size of dinosaurs and discovered they are not as heavy as previously thought.
University of Manchester biologists used lasers to measure the minimum amount of skin required to wrap around the skeletons of modern-day mammals, including reindeer, polar bears, giraffes and elephants.
They discovered that the animals had almost exactly 21% more body mass than the minimum skeletal 'skin and bone' wrap volume, and applied this to a giant Brachiosaur skeleton in Berlin's Museum für Naturkunde.

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Dinosaur gases 'warmed the Earth'

British scientists have calculated the methane output of sauropods, including the species known as Brontosaurus.
By scaling up the digestive wind of cows, they estimate that the population of dinosaurs - as a whole - produced 520 million tonnes of gas annually.
They suggest the gas could have been a key factor in the warm climate 150 million years ago.

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Chechnya Dinosaur Eggs
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THE SENSATIONAL DISCOVERY IN THE MOUNTAINS OF CHECHNYA.

In the period from 8 to April 9, 2012 members of the "Chechnya-tourism center" scientific research expedition made another trip to the mountainous areas of the country. The purpose of the expedition was to study the two previously discovered waterfalls in Sharoi district of Chechnya, which had not yet been studied by scientists.
In the course of the research the expedition made a sensational discovery - in Sharoi district they found a large clutch of fossilised dinosaur eggs. Not only was this a sensational discovery for our country, but the eggs were sized - 24cm, 36cm, 50cm, 73cm, and even 102cm!, (Such large and well-preserved eggs had never been found before).

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Bonapartenykus ultimus
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Eggs and Enigmatic Dinosaurs               

Alvarezsaurs are Cretaceous mysteries. These small dinosaurs, a feathered subgroup of coelurosaurs, had long jaws studded with tiny teeth, and their arms were short, stout appendages that some researchers hypothesize were used to tear into anthills or termite mounds. But no one knows for sure. We understand very little about the biology of these dinosaurs, but even as we puzzle over their natural history, more previously unknown genera are being found. The latest is Bonapartenykus ultimus from the Late Cretaceous of Patagonia, and what makes this dinosaur so special is what was found with its bones.
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 Aquatic dinosaur theory debated

Large dinosaurs could only have supported their weight if they lived in water, not on dry land, according to cell biologist Professor Brian J Ford. Science correspondent Tom Feilden looks at whether his aquatic theory of dinosaurs holds water. Read more

Ed ~ The textbooks will not have to be rewritten



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Thecodontosaurus antiquus
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Did you know Bristol has its very own dinosaur that roamed the city millions of years ago? Known as the Thecodontosaurus, the public now have the chance to draw what they think it really looked like as part of an illustration competition run by the Bristol Dinosaur Project at the University of Bristol.
Discovered in 1834 near Bristol Zoo, Clifton, the Bristol dinosaur was only the 4th dinosaur ever discovered in the world. Ideas about what the dinosaur looked like are changing all the time as paleontologists find out more about its bones which are held at the University and Bristol Museum & Art Gallery.

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The largest find of Iguanodon remains to date occurred on 28 February 1878 in a coal mine at Bernissart in Belgium, at a depth of 322 m, when two mineworkers, Jules Créteur and Alphonse Blanchard, accidentally hit on a skeleton that they initially took for petrified wood. With the encouragement of Alphonse Briart, supervisor of mines at nearby Morlanwelz, Louis de Pauw on 15 May 1878 started to excavate the skeletons and in 1882 Louis Dollo reconstructed them. At least 38 Iguanodon individuals were uncovered, most of which were adults.
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