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duck-billed dinosaur |
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duck-billed dinosaur [¦dək ‚bild ′dīn·ə‚sȯr] (paleontology) Any of several herbivorous, bipedal ornithopods having the front of the mouth widened to form a ducklike beak. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The findings are mostly evidence of theropods (upright carnivores) with footprints of theropod prey, hadrosaurs or duck-billed dinosaurs. The sizes and shapes of crystals from the fossil teeth suggest that the ceratopsian dinosaurs, relatives of Triceratops, may have eaten a high proportion of tough-leafed cycads, whereas the hadrosaurs, or duck-billed dinosaurs, probably favored ferns. The cry of a duck-billed dinosaur reverberated for the first time in more than 70 million years Friday - a low-pitched, trombone wail that listeners felt as much as they heard. |
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