Scientists have discovered the remains of a new dinosaur - feasting on an ancient crocodile bone.

The new find in Argentina hails from a mysterious group of dinosaurs called megaraptorans - and was thought to be 23ft long.

It probably lived between 66 and 70 million years ago - close to the time dinosaurs went extinct - and was at least 19 years old when it died, although scientists do not know what killed it.

Image: An artist's illustration of the newly discovered dinosaur. Pic: Andrew McAfee, Carnegie Museum of Natural History via AP

Researchers said they uncovered part of a skull as well as an arm, leg and tail bones from the Lago Colhue Huapi rock formation in Patagonia.

They noticed unique features in the bones that made them realise this could be a new species.

The fr

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