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The
was led by Professor Junki Yoshida, a
researcher at the Fukushima Museum in Japan. Dr Yoshida did many tests on the
of the fossilized voice box. He compared it with the voice box of
of birds, crocodiles, lizards and
. They now have a good
of what the muscles around the voice box looked like. The muscles controlled the windpipe and sounds of the voice box. Yoshida's research may mean that
like Jurassic Park got it
. Millions of years ago, the Tyrannosaurus rex probably made more of a tweeting
, like a bird. Hollywood may have to change its
roars and growls in future dinosaur films to a tweet-tweet sound.
