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Yunganglong : ウィキペディア英語版
Yunganglong

''Yunganglong'' is an extinct genus of basal hadrosauroid dinosaur known from the early Late Cretaceous lower Zhumapu Formation of Zuoyun County, Shanxi Province of northeastern China. It contains a single species, ''Yunganglong datongensis''.
==Discovery and naming==

''Yunganglong'' was first described and named by Run-Fu Wang, Hai-Lu You, Shi-Chao Xu, Suo-Zhu Wang, Jian Yi, Li-Juan Xie, Lei Jia and Ya-Xian Li in 2013 and the type species is ''Y. datongensis''. The generic name honors Yungang Grottoes, a UNESCO World Heritage site built in the 5th and 6th centuries about 50 km east of the fossil locality, and derived from ''long'' meaning "dragon" in Chinese. The specific name refers to the city of Datong, located in northern Shanxi province, where the holotype was found.〔

''Yunganglong'' is known solely from the holotype SXMG V 00001, field number ZY007, an associated but disarticulated partial skeleton housed at the Shanxi Museum of Geology. The holotype came from a single individual, and includes the caudodorsal part of the skull, ZY007-37 and ZY007-38, separated along the floor of the braincase; two cervical vertebrae ZY007-40 and ZY007-41; partial dorsal neural arch and neural processes ZY007-36; two caudal vertebrae, including the proximal ZY007-27 and the middle ZY007-19; distal portions of both ischia (left ZY007-11 and right ZY007-12, distal end of left femur ZY007-32, proximal portion of right tibia ZY007-1, and distal portion of left tibia with astragalus ZY007-2. The remains were collected in 2011 from Locality 7 of the Zhumapu Formation, as a part of a project to find dinosaurs for the Shanxi Museum of Geology, initiated by the Department of Land and Resources of Shanxi Province. SXMG V 00001 was found in the vicinity of Zuoyun County, from the lower part of Zhumapu Formation, dating to the early Late Cretaceous based on biostratigraphic correlations, overlying the late Early Cretaceous Zuoyun Formation. Other than SXMG V 00001, ankylosaur and ceratopsian remains were found from the newly discovered localities. The first dinosaur record in Shanxi Province was reported by Young (1958), from two localities in Zuoyun County. He assigned hadrosauroid material recovered from the Xinyaogou locality of the Zuoyun area to ''Bactrosaurus johnsoni'', including two isolated teeth, some vertebrae including a series of 25 caudal vertebrae, one rib, one right humerus and several manual and pedal bones. Although no overlapping material exists, based on the more basal phylogenetic position and lower stratigraphic horizon of ''Yunganglong'' compared to ''Bactrosaurus'', Young's material more probably pertains to ''Yunganglong''.〔

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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