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“Skin lesions over dorsum” — the upper half of her body.

“They can camouflage imperfections such as a dorsal hump and make the dorsum appear straight.”

The dinosaur would then stay like this, “with the ballooned belly floating near the surface, and the dorsum weighted down by the heavy armour.”

“A dark dorsum and lighter ventrum helps to mask the three-dimensional shape of the body by reducing self-shadowing and decreasing conspicuousness, thus helping to avoid detection by predators and prey,” the study authors wrote.

In addition, in both males and females, the dorsum of the abdomen is black with two rows of four red spots.