‘Extremely rare’ fossilized dinosaur voice box suggests they sounded bird-like

An artist’s illustration of the ankylosaurus, Pinacosaurus grangeri. The voice box is shown in color below the jaw. (Image credit: Tatsuya Shinmura))

The “extremely rare” discovery of an 80-million-year-old fossilized voice box that belonged to an armored dinosaur reveals that the ancient beast may have sounded more bird-like than experts previously thought, new research suggests.

Pinacosaurus grangeri — a squat, armored, club-tailed ankylosaur found in Mongolia in 2005 — was discovered with the first fossilized voice box (larynx) found in a non-avian dinosaur.

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