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Yingshanosaurus
''Yingshanosaurus'' (meaning "Yingshan or Golden Hills reptile") is a genus of quadrupedal herbivorous dinosaur from the Late Jurassic, around 155 million years ago. It was a stegosaurian that lived in what is now China. The type species is ''Yingshanosaurus jichuanensis''.
==Discovery and naming==
In 1983, a stegosaurian skeleton was excavated in Sechuan by team led by Wan Jihou. In 1984, the find was reported by Zhou Shiwu. In 1985, Zhou used the name ''Yingshanosaurus jichuanensis'' during a paleontological congress in Toulouse. Though his lecture was published in 1986,〔S. Zhou, 1986, "De l'origine et de l'évolution systématique des Stegosauria à la lumière des fossiles connus", ''Les Dinosaures de La Chine à La France, Colloque International de Paléontologie, Toulouse, France, 2-6 Septembre 1985'', Muséum d'Histoire Naturelle de Toulouse, Toulouse pp 31-38〕 it was assumed that the name remained a ''nomen nudum'' due to an insufficient description. In 1994 however, Zhu Songlin fully described the animal.〔Zhu Songlin, 1994, "记四川盆地营山县一剑龙化石 (of a fossil stegosaur from Yingshan in the Sichuan Basin )", ''Sichuan Cultural Relics'', 1994(S1): 8-14〕 This fact escaped most Western researchers who considered the taxon invalid until well into the twenty-first century. The generic name is derived from the county of Yingshan. The specific name refers to the location of the site, Jichuan.
The holotype, CV OO722, was found in a layer of the late Upper Shaximiao Formation, probably dating from the early Kimmeridgian. It consists of a partial skeleton including a fragmentary skull, of an adult individual. It contains a number of individual dorsal vertebrae, a series of dorsal vertebrae found in articulation with the sacrum and pelvis, seven tail vertebrae, ribs, seven chevrons, a left scapulocoracoid, a left humerus, a left radius, a left second metacarpal, a left thighbone, a left shinbone, a left fibula, metacarpals, a phalanx, several back plates and a left shoulder spine. The main lacking parts are the neck and the tail end. The skull bones found are so fragmentary that they provide little relevant information. A 2006 paper by Susannah Maidment states that the only fossil specimen could not be located.
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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