Decades-old sea monster mystery solved

Discovered in the 80s, the creature was unlike anything scientists had seen before

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A bizarre ancient marine reptile has been formally identified, decades after fossils of the creature were first discovered in Canada.

The 12m-long (40ft) vertebrate, Traskasaura sandrae, was a long-necked plesiosaur - a type of aquatic predator that lived at the time of the dinosaurs - with a bizarre anatomy and a rare top-down hunting style.