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Forum » Sarcina,9 luni minunate... » Alimentatie,sport,sexualitate in timpul sarcinii » isabel marant shoes sale them more
isabel marant shoes sale them more
isabulunoseData: Miercuri, 09.12.2015, 16:17:16 | Mesaj # 1
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'Biggest dinosaur ever' discovered
A film crew from the BBC Natural History Unit was there to capture the moment
the scientists realised exactly how big their discovery was.
By measuring the length and circumference of the largest femur (thigh bone),
they calculated the animal weighed 77 tonnes.
"Given the size of these bones, which surpass any of the previously known
giant animals, the isabel marant
new dinosaur is the largest animal known that walked on Earth,"
the researchers told BBC News.
"Its length, from its head to the tip of its
tail, was 40m.
"Standing with its neck up, it was about 20m high equal to a sevenstorey
There have been many previous contenders for the title "world's biggest
The most recent pretender to the throne was Argentinosaurus, a similar type
of sauropod, also discovered in Patagonia.
Originally thought to weigh in at 100 tonnes, it was later revised down to
about 70 tonnes just under the 77 tonnes that this new sauropod is thought to
have weighed.
The picture is muddied by the various complicated methods for estimating size
and weight, based on skeletons that are usually incomplete.
Argentinosaurus was estimated from only a few bones. But the researchers here
had dozens to work with, making them more confident that they really have found
"the big one".
Dr Paul Barrett, a dinosaur expert from London's Natural History Museum,
agreed the new species is "a genuinely big critter. But there are a number of
similarly sized big sauropod thigh bones out there," he cautioned.
"Without knowing more about this current find it's difficult to be sure. One
problem with assessing the weight of both Argentinosaurus and this new discovery
is that they're both based on very fragmentary specimens
isabel marant shoes sale no
complete skeleton is known, which means the animal's proportions and overall
shape are conjectural.
"Moreover, several different methods exist for calculating dinosaur weight
(some based on overall volume, some on various limb bone measurements) and these
don't always agree with each other, with large measures of uncertainty.
"So it's interesting to hear another really huge sauropod has been
discovered, but ideally we'd need much more material of these supersized animals
to determine just how big they really got."
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