The fossil of a marine reptile ''re-discovered'' in a museum is the largest of its kind on record, say scientists.
The ''sea dragon'' belongs to a group that swam the world's oceans 200 million years ago, while dinosaurs walked the land.
The specimen is the largest Ichthyosaurus to be described, at more than three metres long.
It was discovered on the coast of England more than 20 years ago, but has remained unstudied until now.
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