Dreadnoughtus dinosaur
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'Dreadnought' dinosaur yields big bone haul

Scientists in America believe they've discovered a new dinosaur which could well be one of the largest ever found.

It's been called Dreadnoughtus, and is thought to have been as large as a passenger aircraft and to have weighed the same as a herd of elephants.

BBC Science Correspondent Pallab Ghosh reports.

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