Dinosaurs 65 million years ago, so we don't really know what they like. Of course, there are many movies with dinosaurs all kinds of roars, screeches and screams. However, these noises just guesses that movie directors make about how dinosaurs sounded. A new discovery has scientists a better idea of the kinds of sounds dinosaurs . The scientists examined a rare fossil. It was from a spiky, armoured dinosaur an ankylosaur. The fossil is around 78 million years old. It a record of the ankylosaur's voice box. It is the world's oldest fossil of a voice box. The scientists the shape of the creature's voice box it probably made bird-like sounds.
The research was by Professor Junki Yoshida, a dinosaur researcher at the Fukushima Museum in Japan. Dr Yoshida many tests on the shape of the fossilized voice box. He it with the voice box of dozens of birds, crocodiles, lizards and turtles. They now a good idea of what the muscles around the voice box like. The muscles the windpipe and sounds of the voice box. Yoshida's research may mean that movies like Jurassic Park it wrong. Millions of years ago, the Tyrannosaurus rex probably more of a tweeting sound, like a bird. Hollywood may to its scary roars and growls in future dinosaur films to a tweet-tweet sound.
