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TOPIC: Hunting Dinosaurs


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RE: Hunting Dinosaurs
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T. rex 'hunted in packs'



New evidence suggests T. rex formed gangs to hunt, millions of years before scientists thought the behaviour evolved.



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T. rex had arms 'to help it stand up'



Scientists have used computer models to try and find out what the T. rex's mysterious tiny arms were used for.



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Australian dinosaur had UK double

A 5cm-wide fossil may have something big to say about how dinosaurs ranged across the Earth.
The 125-million-year-old neck vertebra belonged to a spinosaurid - an animal with a crocodile-like snout that it probably used to prey on fish.
The specimen is the first such dinosaur identified in Australia but one that is nearly identical to a UK creature.

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Some dinosaurs did their hunting at night, new research suggests.
Studies of the eyes of existing birds and reptiles with different daily activity patterns were compared with similar parts in dinosaur fossils.
The results suggests that small, meat-eating dinosaurs were nocturnal; large, plant-eating dinosaurs tended to forage both during the day and at night.

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Zhuchengtyrannus magnus
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Giant prehistoric dinosaur cousin of T. rex identified

A giant predatory theropod dinosaur, similar in size and stature to Tyrannosaurus rex, has been identified by palaeontologists.
The new dinosaur, named Zhuchengtyrannus magnus, probably stood four metres tall, was 11 metres long and weighed around six tonnes.
Like T. rex, it was a carnivore with huge powerful jaws.

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Tyrannosaurus rex
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T. Rex More Hyena Than Lion

The ferocious Tyrannosaurus rex has been depicted as the top dog of the Cretaceous, ruthlessly stalking herds of duck-billed dinosaurs and claiming the role of apex predator, much as the lion reigns supreme in the African veld.
But a new census of all dinosaur skeletons unearthed over a large area of Eastern Montana shows that Tyrannosaurus was too numerous to have subsisted solely on the dinosaurs it tracked and killed with its scythe-like teeth.

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RE: Hunting Dinosaurs
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Two-clawed and parrot-sized: new T.rex cousin unveiled

A tiny distant cousin of Tyrannosaurus rex has been discovered in China with only a single claw on each upper limb.
Linhenykus monodactylus weighed no more than a large parrot and was found in sediments between 84 and 75 million years old.
The dinosaur belongs to a sub-branch of the theropods, the dinosaur group which includes T.rex and Velociraptor, and which gave rise to modern birds.

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Linhenykus monodactylus
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The first single-fingered dinosaur

A new species of parrot-sized dinosaur, the first discovered with only one finger, has been unearthed in Inner Mongolia, China.
Scientists named the new dinosaur Linhenykus monodactylus, after the nearby city of Linhe. The work is published online today in Proceedings of the National Academy of Sciences (PNAS).
The new dinosaur belongs to the Alvarezsauroidea, a branch of the carnivorous dinosaur group Theropoda. Theropods gave rise to modern birds and include such famous dinosaurs as Tyrannosaurus and Velociraptor.
An international team of palaeontologists found the fossil preserved in rocks of the Upper Cretaceous Wulansuhai Formation, which is located near the border between Mongolia and China. The formation dates to 84-75 million years ago and has yielded a rich trove of vertebrate fossils including the recently discovered theropod Linheraptor exquisitus. The authors uncovered a partial skeleton from the site, which included bones of the vertebral column, the forelimb, a partial pelvis and nearly complete hind limbs.



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Eodromaeus
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Early T. Rex ancestor found in South America

Back at the dawn of the dinosaur era, a quick-moving predator set the stage for the famous and fearsome giants that followed in its footsteps, according to new research. "It was a little dinosaur, but it carried a big evolutionary stick," said Paul C. Sereno of the University of Chicago, a leader of the team that discovered Eodromaeus.
The 4-foot-long hunter lived 230 million years ago in what is now South America and appears to be the ancestor of such creatures as Tyrannosaurus rex.

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Tyrannosaurus rex
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T. rex's big tail was its key to speed and hunting prowess

Tyrannosaurus rex was far from a plodding Cretaceous era scavenger whose long tail only served to counterbalance the up-front weight of its freakishly big head.
T. rex's athleticism (and its rear end) has been given a makeover by University of Alberta graduate student Scott Persons. His extensive research shows that powerful tail muscles made the giant carnivore one of the fastest moving hunters of its time.

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