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TOPIC: Hunting Dinosaurs


L

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Raptorex kriegsteini
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Fossil hunters have unearthed the remains of a man-sized forerunner to the colossal Tyrannosaurus rex from an ancient lake bed in northeastern China.
The remarkable discovery has allowed dinosaur experts to piece together a picture of a diminutive but formidable predator that was so finely tuned to killing they describe it as "Jaws on legs".

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Tyrannosaurus rex
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Fossilised T.rex to be auctioned in Las Vegas
Museums and high-rolling natural history buffs will get a crack at buying a fossilised Tyrannosaurus rex next month at a Las Vegas Strip auction.
Auctioneer Bonhams & Butterfields is hoping that bids for the T. rex dubbed "Samson" will top $6 million when it is sold Oct. 3 at the Venetian hotel-casino in Las Vegas.


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L

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One of the largest known Tyrannosaurus rex specimens ever discovered will be offered by international auctioneers Bonhams & Butterfields on Saturday, October 3, 2009 during the company's first Natural History auction to be held at The Venetian ® in Las Vegas. The auction will contain approximately 50 lots of fossils with the centerpiece of the sale focusing on the expertly mounted female T. rex, expected to bring millions of dollars. The rare 66-million year old Tyrannosaurus skeleton - dubbed "Samson" - is arguably one of the three most complete specimens to have been discovered. Native to North America, Tyrannosaurus rex is recognised as the 'Tyrant Lizard King' and is the most famous of the behemoths of the "Age of Dinosaurs." This rare example from the Cretaceous period was excavated near Buffalo, South Dakota over 15 years ago.

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L

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RE: Hunting Dinosaurs
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Title: Feeding behaviour and bone utilisation by theropod dinosaurs.
Authors: David W. E. Hone and Oliver W. M. Rauhut.

Examples of bone exploitation by carnivorous theropod dinosaurs are relatively rare, representing an apparent waste of both mineral and energetic resources. A review of the known incidences and possible ecological implications of theropod bone use concludes that there is currently no definitive evidence supporting the regular deliberate ingestion of bone by these predators. However, further investigation is required as the small bones of juvenile dinosaurs missing from the fossil record may be absent as a result of theropods preferentially hunting and consuming juveniles. We discuss implications for both hunting and feeding in theropods based on the existing data. We conclude that, like modern predators, theropods preferentially hunted and ate juvenile animals leading to the absence of small, and especially young, dinosaurs in the fossil record. The traditional view of large theropods hunting the adults of large or giant dinosaur species is therefore considered unlikely and such events rare.

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Tyrannosaurus jagte wohl in der Kinderstube
Zwei Titanen, die sich einen blutigen Kampf liefern - der nicht selten für beide tödlich endet. So werden grobe Raubsaurier im Kampf mit ihrer vermeintlichen Beute, den mindestens ebenso groben Pflanzenfressern, meist dargestellt. Ein derartiges Jagdverhalten ist durch Fossilienfunde aber nicht zweifelsfrei belegt. Vielmehr deuten die versteinerten Uberreste der Raubsaurier eher an, dass sich die groben Fleischfresser, die Theropoden, vor allem auf eine kleinere Version dieser Beutetiere spezialisierten: Der LMU-Paläontologe Dr. Oliver Rauhut und sein Mitarbeiter Dr. David Hone vermuten, dass Tyrannosaurus und Co vor allem Jagd auf Jungtiere machten. "Anders als ihre erwachsenen und sehr wehrhaften Verwandten konnten diese Tiere den Raubsauriern kaum gefährlich werden", sagt Rauhut. "Auberdem hätten die zarten Knochen der Jungtiere den Fleischfressern wertvolle Mineralien geliefert. Wir hoffen jetzt auf weitere Fossilfunde, die unsere Hypothese untermauern."

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L

Posts: 131433
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Tyrannosaurus rex
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T. Rex footprint found near NM scout ranch
Deep in the tropical jungle of northern New Mexico, hiding under the 100-foot canopy of trees, the ancient giant predator left an unmistakable mark when it got its foot stuck in the mud.
Tyrannosaurus rex, one of our state's most famous celebrities, roamed this part of the world around 66 million years ago, back when the now dry, sunny Land of Enchantment was a coastal jungle crossed with swampy, muddy rivers.

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Reexamination of T. rex verifies disputed biochemical remains
A new analysis of the remains of a Tyrannosaurus rex that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage. The findings, scheduled for publication in the Sept. 4 issue of ACS' monthly Journal of Proteome Research, is the latest addition to an ongoing controversy over which biochemical remnants can be detected in the dinosaur.

American Chemical Society

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L

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Date:
Nothronychus graffami
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A multi-institutional team of scientists this week reports the discovery of a giant new dinosaur in Utah, Nothronychus graffami, which stood 13 feet tall and had nine-inch-long hand claws that looked like scythes.
Its skeleton, described in the current issue of Proceedings of the Royal Society B, represents the most complete remains ever excavated of a therizinosaur, meaning "reaper lizard." It is one of only three such dinosaurs ever found in North America.

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L

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RE: Hunting Dinosaurs
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Title: New Mid-Cretaceous (Latest Albian) Dinosaurs from Winton, Queensland, Australia
Authors: Scott A. Hocknull, Matt A. White, Travis R. Tischler, Alex G. Cook, Naomi D. Calleja, Trish Sloan, David A. Elliott

Australia's dinosaurian fossil record is exceptionally poor compared to that of other similar-sized continents. Most taxa are known from fragmentary isolated remains with uncertain taxonomic and phylogenetic placement. A better understanding of the Australian dinosaurian record is crucial to understanding the global palaeobiogeography of dinosaurian groups, including groups previously considered to have had Gondwanan origins, such as the titanosaurs and carcharodontosaurids.

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L

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Australovenator wintonensis
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Scientists have confirmed for the first time that Australia was once home to a dinosaur that was big, fast and terrifying, and they've named it like something from an Arnold Schwarzenegger movie. Meet the Australovenator.
The beast was a 500 kilogram meat-eating predator with three slashing claws on each of its powerful forelimbs that stalked the Outback 98 million years ago, researchers said in a report published Friday.

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L

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RE: Hunting Dinosaurs
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"No somos capaces de investigar y publicar todos los fósiles que encontramos"
Teruel es tierra de dinosaurios. Así lo demuestran los más de 50 yacimientos que albergan los restos fósiles de estos animales milenarios en la provincia aragonesa. Pero para Luis Alcalá, director gerente de la Fundación Conjunto Paleontológico de Teruel-Dinópolis aún queda mucho por excavar. Uno de sus últimos trabajos, que se publica en el próximo número de la revista Estudios Geológicos, aporta nuevas claves sobre el dinosaurio carnívoro al que pudo pertenecer el diente de casi 10 cm hallado en Riodeva.


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