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''Zizhongosaurus'' (meaning "Zizhong lizard") is a genus of basal herbivorous sauropod dinosaur which lived in the Early Jurassic Period of China. It was a large-bodied herbivore characterized by a long neck. The type species ''Zizhongosaurus chuanchengensis'' was named in 1983 by Dong Zhiming, Zhou Shiwu and Zhang Yihong. The generic name is derived from Zizhong County in Sichuan Province. The specific name refers to the town of Chuancheng. The type specimens consist of three syntypes: V9067.1 is a partial dorsal vertebra; V9067.2 is a humerus or upper arm; and V9067.3 is a pubis. All specimens likely were part of a single skeleton. ''Zizhongosaurus'' was described as a small species.〔Dong, Z., Zhou, S., Zhang, Y. (1983). "Dinosaurs from the Jurassic of Sichuan". ''Palaeontologica Sinica'' 162 New Series C 23. Science Press Peking: pp. 1-136〕 In 1999 Li Kui mentioned a second species: ''Zizhongosaurus huangshibanensis''〔K. Li, Y. Zhang, K. Cai, 1999, ''The Characteristics of the Composition of the Trace Elements in Jurassic Dinosaur Bones and Red Beds in Sichuan Basin'', Geological Publishing House, Beijing〕 but this has remained an undescribed ''nomen nudum''. ''Zizhongosaurus'' was originally assigned to the Cetiosaurinae but later authors have placed it in either the Vulcanodontidae, as a relative of ''Barapasaurus'', or the Shunosaurinae. It is today often considered a ''nomen dubium''. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Zizhongosaurus」の詳細全文を読む スポンサード リンク
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