Byline: YOLANDA CALVILLO - Knight-Ridder
The dinosaurs of "Jurassic Park" not only look real, they sound convincingly like the real things. Or do they?
How did producer Steven Spielberg and his paleontological advisers know that a brachiosaurus mooed? Or a dilophosaurus twittered and cooed? Or even that tyrannosaur had a terrifying roar?
They didn't make it up -- at least, not completely, paleontologists say.
In fact, what dinosaurs sounded like is "the hottest part of dinosaur research" right now, says Robert Bakker, a technical adviser for the movie and the internationally known paleontologist who first suggested that dinosaurs were …
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