Skeleton of a diplodocus
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Skeleton of diplodocus to go on auction in England

27 November 2013 Last updated at 10:18 GMT

The skeleton of a diplodocus is expected to reach more than $500,000 at an auction in the south of England on Wednesday.

The diplodocus is an extremely large, long-necked dinosaur from the late Jurassic period.

Rebecca Morelle reports.