Scientists had a heck of a time getting the remarkable fossil of a dinosaur they dubbed "Hellboy" out of the hard limestone along a Canadian river bank where it was entombed for 68 million years, but the diabolic task proved gratifying.
The scientists described it in Current Biology on June 4 as one of the most unique horned dinosaurs ever discovered, a beast boasting an exotic set of facial horns and spines around the edge of the bony frill at the back its skull.
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