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Unformatted text preview: ornoithischians are the so-called bird-hipped dinosaurs. However, the resemblance of hip structure between birds and this group is no longer considered evidence for the rise of birds from ornithischians, but as a result of convergent evolution. A major group of ornithischians during the Jurassic was the stegosaourids, exemplified by the genus Stegosaurus , the state dinosaur of Colorado. These quadrupedal animals sported spiked tails and large flat armor plates arrayed along the spine. These plates functioned for regulation of body heat. Stegosaurus was about 9 meters long and weighed about 2 tons. Even among dinosaurs it is noteworthy for its incredibly small brain....
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- Fall '10
- Biology, Jurassic, so-called bird-hipped dinosaurs, Jurassic Park movies