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2nd June 2020

Science Megaraptor: Fossils of 10m-long dinosaur found in Argentina

Science Megaraptor: Fossils of 10m-long dinosaur found in Argentina


science Members of the Argentine Museum of Natural Sciences unearth fossils of a megaraptor, at El Calafate, Santa Cruz, Argentina March 13, 2020Image copyright

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The fossils were found during field work in Patagonia

Palaeontologists have found the fossils of a new megaraptor in Patagonia, in the south of Argentina.

Megaraptors were large carnivorous dinosaurs with long arms and claws measuring up to 35cm (14in) in length.

They also had powerful legs and long tails which made them more agile than the Tyrannosaurus rex and allowed them to catch smaller herbivorous dinosaurs.

The new megaraptor is one of the last of its group, before dinosaurs became extinct, the scientific team says.

Science What did the scientists find?

The team led by Fernando Novas from the Natural Sciences Museum in Buenos Aires discovered many fossils during its month-long field work in Estancia La Anita, in southern Santa Cruz province.

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The most unusual ones were the remains of a large carnivorous dinosaur belonging to the Megaraptoridae family.

The scientists uncovered vertebrae, ribs and part of what would have been the dinosaur’s chest and shoulder girdle.

Image copyright
Argentine Natural Science Museum

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A large number of fossils have been found in Patagonia, in Argentina’s south

The fossils they found belonged to a specimen measuring approximately 10m (33ft) in length, one of the largest of the Megaraptoridae found so far.

In a statement [in Spanish], the team said that the remains date back 70 million years – towards the end of “the age of the dinosaurs”.

Fernando Novas told Reuters news agency that “this new megaraptor that we now have to study would be one of the last representatives of this group” before the dinosaurs became extinct.

Science What did it look like?

The megaraptor had long, muscular arms with sickle-like claws and a long tail which provided it with balance.

Slimmer and more agile than the T. rex it is thought to have used its arms and claws rather than its jaw as its main weapon when hunting its prey.

“It had powerful and elongated legs which allowed it to take big steps,” palaeontologist Aranciaga Rolando said.

The scientists from the Natural Sciences Museum believe it would have used its speed to hunt ornithopods, plant-eating dinosaurs which walked on two legs.

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Media captionA giant dinosaur thigh bone is excavated in France


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