A strange-looking dinosaur, complete with hundreds of teeth and a vacuum-shaped mouth, has been unveiled in Washington.

A team of palaeontologists have revealed what the Nigersaurus taqueti would have looked like when it wandered the earth 110 million years ago.

They described it as having a weird anatomy, including a mouth that powered through ground greenery like a vacuum cleaner, and almost translucent skull bones.

Researchers also found that the Nigersaurus had 500 teeth, with up to eight replacements stacked up behind each tooth.

The group of scientists said that the Nigersaurus may have been the "cow of the Mesozoic," and far more common than better-known dinosaurs.

A team first discovered the skull bones of the dinosaur in Niger in 1997, finding almost 80 per cent of the skeleton by a subsequent expedition.

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