US News: Scientists unearth huge claw from 110-million-year-old carnivorous dinosaur - - PressFrom - United Kingdom
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US News Scientists unearth huge claw from 110-million-year-old carnivorous dinosaur

07:40  31 october  2019
07:40  31 october  2019 Source:   cnet.com

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A site containing the 220- million - year - old fossilised remains of nearly a dozen dinosaurs has been discovered in western Argentina, researchers said Wednesday. According to Martinez, of the University of San Juan, the fossils are approximately 220 million years old , belonging to "an era of

Some 110 million years ago, this armored plant-eater lumbered through what is now western Canada, until a flooded river swept it into open sea. The dinosaur ’s undersea burial preserved its armor in exquisite detail. Its skull still bears tile-like plates and a gray patina of fossilized skins.

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A handful of bones, including an 8-inch (20-centimeter) claw found in the 107 million-year-old Eumeralla Formation in Australia, point to the discovery of a new species of carnivorous dinosaur. The rare find has intrigued paleontologists because the bones look almost identical to a previously-discovered species that lived around 10 million years later and thousands of miles further north.

The discovery, published in the Journal of Vertebrate Paleontology, includes two teeth, two claws, an ankle bone and a neck bone belonging to a group of theropod dinosaurs -- those that include beasts like the T. rex -- known as the megaraptorids. The find adds to the hundreds of fossils unearthed at Eric the Red West (ERTW), a site south-west of Melbourne, Australia, but it's particularly exciting because of the resemblance to a species known as Australovenator wintonensis.

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An extraordinarily well-preserved 110 - million - year - old dinosaur found in a mine pit in Canada now has a name and evidence of a troubled past, researchers said on Thursday. With fossilized skin and scales, the dragon-like creature is actually a new kind of nodosaur, coined Borealopelta markmitchelli, after

In a pile of unpromising dinosaur fossils dug up in Canada a century ago, British scientists find soft tissue materials preserved for some 75 million years . They include a claw from a carnivorous theropod (possibly a Gorgosaurus), a toe bone resembling that of a Triceratops and several limb and

Claw-ght red-handed. Stephen Poropat/Museums Victoria © Provided by CBS Interactive Inc. Claw-ght red-handed. Stephen Poropat/Museums Victoria

"All of these bones, other than the vertebra, can be compared with Australovenator wintonensis and all appear to be very similar," says Stephen Poropat, a paleontologist at Swinburne University and first author on the study.

The striking resemblance presents a conundrum for the researchers because Australovenator wintonensis was discovered in Queensland, a region thousands of miles to the north of ERTW. Those bones were dated to 95 million years ago, which means there's a 10 million-year gap between the two fossil finds.

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"It is possible that we've found bones of subadult Australovenator individuals," says Poropat, "but it is more likely that we're dealing with a different species.

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Over a 100 million years ago, an 18-foot (5.48 meter) long, 2,500-pound (1,133 kg) pineapple-shaped dinosaur met an untimely death when it was swept away by a river in what is now Alberta, Canada. Fortunately for us, its body ended up situated back-first on the muddy floor of an old seaway.

An extraordinarily well-preserved 110 - million - year - old dinosaur found in a mine pit in Canada now has a name and evidence of a troubled past The report in the journal Current Biology described it as "the best-preserved armored dinosaur ever found, and one of the best dinosaur specimens in the world."

"To have a dinosaur species lasting for more than 10 million years would be extraordinary, but not impossible."

tyrannosaurus rex during meteors rain on jurassic era tyrannosaurus rex during meteors rain on jurassic era

Perhaps the most impressive find is the striking 8-inch claw. Poropat explains the unique shape -- one that you're probably familiar with if you've ever seen Jurassic Park -- is mostly identical to megaraptorid claws found in other regions, including Megaraptor, a theropod discovered in Argentina with an almost 13-inch claw.

With only fragments of the fossil currently available, it hasn't received an official name or identifier just yet. However, Eric the Red West has turned up some stellar fossils in the past and Poropat hopes that more theropod bones will be found in the future. Another expedition to the site will occur in November.

"The deposits are all representative of deep, fairly fast-flowing rivers, so we don't expect to find a whole skeleton of a land-living animal, but we might get lucky," he says.

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