Science

‘Mona Lisa of dinosaurs’ discovered in Canada

Press Trust of India Toronto | Updated on January 09, 2018 Published on August 04, 2017

Scientists have discovered the world’s best-preserved armoured dinosaur — dubbed as the ‘Mona Lisa’ of dinosaurs — in Canada, that dates back about 110 million years.

The new genus and species Borealopelta markmitchelli used camouflage to hide from predators despite being built like a tank, researchers said.

An analysis of the 18-foot-long specimen’s exquisitely well-preserved form, complete with fully armoured skin, suggests that the nodosaur had predators, despite weighing more than 1,300 kg.

The researchers came to that conclusion based on studies of the dinosaur’s skin, showing that Borealopelta exhibited countershading, a common form of camouflage in which an animal’s underside is lighter than its back.

The scientists say the discovery suggests that the dinosaur belonging to the nodosaur family faced predation stress from meat-eating dinosaurs.

“Strong predation on a massive, heavily-armoured dinosaur illustrates just how dangerous the dinosaur predators of the Cretaceous must have been,” said Caleb Brown, a scientist at the Royal Tyrrell Museum in Canada. The specimen was found by accident in 2011, by mining machine operator Shawn Funk at the Suncor Millennium Mine in Alberta.

World’s best specimen

The specimen now represents the best-preserved armoured dinosaur ever found, and one of the best dinosaur specimens in the world, the researchers said.

“This nodosaur is truly remarkable in that it is completely covered in preserved scaly skin, yet is also preserved in three dimensions, retaining the original shape of the animal,” said Brown.

“The result is that the animal looks almost the same today as it did back in the Early Cretaceous. You do not need to use much imagination to reconstruct it; if you just squint your eyes a bit, you could almost believe it was sleeping.

“It will go down in science history as one of the most beautiful and best preserved dinosaur specimens — the Mona Lisa of dinosaurs,” Brown said.

The condition of the specimen made it possible for researchers to document the pattern and shape of scales and armour across the body.

They also used chemical analysis of organic compounds in the scales to infer the dinosaur’s pigmentation pattern.

Those studies revealed that the dinosaur had reddish-brown-pigmented skin with countershading across its the body, researchers said.

Published on August 04, 2017
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