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Velociraptors
2013-11-13 来源: 类别: 更多范文
Velociraptors
Velociraptor
Velociraptors were first found and described by paleontologist H. F. Osborn in Mongolia in 1924. About a dozen Velociraptor fossils have been found, including one who died in a battle to the death with a Protoceratop and two hatchling Velociraptor skulls that were found near an oviraptorid nest in Mongolia. Fossils have been found in Mongolia, Russia and China. Velociraptors lived during the late Cretaceous period, about 85 80 million years ago. Among the contemporaries of Velociraptors were Protoceratops, Gallimimus, Oviraptor, Edmontosaurus, Maiasaura, and Saurolophus. Velociraptors lived in a hot, dry environment, desert-like environment that had some streams. They were a fast-running, two-legged (bipedal) dinosaur. This meat-eater had about 80 very sharp, curved teeth in a long, flat snout; some of the teeth were over an inch (2.5 cm) long. This predator had an s-shaped neck, arms with three-fingered clawed hands, long thin legs, and four-toed clawed feet. Velociraptors heads were about 7 inches (18 cm) long. They may have been able to run up to roughly 40 mph (60 km/hr) for short bursts. Velociraptors were about 5 to 6 feet long (1.5-2 m), and 3 feet
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