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Omeisaurus
''Omeisaurus'' (meaning "Omei lizard") is a genus of sauropod dinosaur from the Middle Jurassic Period (Bathonian-Callovian stage) of what is now China. Its name comes from Mount Emei, where it was discovered in the lower Shaximiao Formation of Sichuan Province.
Like other sauropods, ''Omeisaurus'' was herbivorous and large. It measured 10 to 15.2 metres (30 to 50 ft) long and 4 metres (12 ft) high, and weighed 40 tons.
==Discovery==
''Omeisaurus'' was first described in 1939. It was named after the sacred mountain Omeishan, which is where the first fossil example of ''Omeisaurus'' was found. Most skeletons of ''Omeisaurus'' were found in the 1970s and 1980s, during the great “Chinese dinosaur rush”. There have been six species of ''Omeisaurus'' named so far: ''O. junghsiensis'', ''O. changshouensis'', ''O. fuxiensis'', ''O. tianfuensis'', ''O. luoquanensis'', and ''O. maoianus''. All of these but the last were named after the locations where they were found. ''O. fuxiensis'' was the smallest species, measuring around long. ''O. tianfuensis'' had the longest neck of the genus, around long. The only dinosaur with a longer neck was ''Mamenchisaurus''. A club tail fossil discovered in the same bone bed as the ''Omeisaurus'' fossils was thought to belong to this genus, but is now believed to belong to a large specimen of ''Shunosaurus''.
Mounted skeletons of ''Omeisaurus'' are on display at the Zigong Dinosaur Museum in Zigong, Sichuan Province and at Beipei Museum, near Chongqing, both in China.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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