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Sunday, July 6, 2008 |
Sunday, July 6, 2008 |
Photo: Big Dinosaurs Heard Only Low-Pitch Sounds, Experts SuggestA new theory based on studies of birds' hearing suggests that large dinosaurs such as the Brachiosaurus could hear only low-pitched noises—meaning their hearing range would not include sound frequencies to which the human ear is optimally attuned. Photograph by Koji Sasahara/AP
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