Dinosaur3 - Plateosaurus Sauropods ate numerous types of...

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Dinosaurs In contrast to the Triassic dinosaurs, the Jurassic forms became even larger and more fierce. While most Triassic dinosaurs were saurischians, the ornithischians became more prominent during the Jurassic. The small, bipedal saurischians of the Triassic continued in the Jurassic, as exemplified by Ornithomimus . This dinosaur had no teeth in its jaws, a bird-like head, and a long, ostrich-like neck, was around 3 meters long and weighed approximately 100-150 kg. The true giants of the finosaur world were the sauropods. These quadrupedal, herbivores included Apatosaurus , Brachiosaurus , and Diplodocus . Paleontologists believe that the sauropod clade evolved from a Triassic ancestor similar to
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Unformatted text preview: Plateosaurus . Sauropods ate numerous types of plants, often specializing in plants of a certain height. Since the teeth of sauropods are not adapted for grinding, this mechanical part of the digestive process was accomplished in their stomachs. Sauropod skeletons are often found in association with curiosuly rounded stones in the approximate position of the stomach. These "stomach stones" are known as gastroliths, and served a similar function in sauropods as bird gravel does in birds: to aid digestion of plant material not ground up enough in the mouth. Gastroliths are not unique to sauropods, as many other herbivorous dinosaurs and plesiosaurs have been found with stomach stones....
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