Brutal dinosaurs with spiked armor screamed like parrots.

It seems that powerful armored and spiked dinosaurs roared or growled. In fact, some of them sang like birds. Japanese scientists came to such conclusions after analyzing the fossils of the larynx of an ankylosaurus that lived on Earth 72-84 million years ago. Most likely, the ankylosaurus made sounds similar to the singing of parrots. But they were more powerful and much more "explosive". Such vocalization helped reptiles communicate with each other.